Katalog DIAMOND CONTACT s.r.o.

2008/2009
DIAMOND AND CBN Grinding wheels
StandarD line
D iamond
C on tac t
s. r. o.
Dear Business Partners
We would like to introduce you to Diamond Contact Ltd
and its product catalogue. The company was established in
1992 and became Diamond Contact Ltd in 1995.
D iamond
C on tac t
s. r. o.
CONTENTS:
Shape overview ................................................. page 4
1.
Introduction ............................................... page 6
2.
Diamond grinding wheels ............................. page 6
3.
CBN grinding wheels .................................... page 6
4.
Basic specifications of grinding wheels ........... page 7
5.
Shapes of grinding wheels ............................ page 8
6.
Dimensions of grinding wheels ...................... page 10
7.
Abrasive material ........................................ page 12
8.
Grain size .................................................. page 12
9.
Bonds ....................................................... page 13
10.
Concentration ............................................. page 14
11.
Machinery requirements .............................. page 15
12.
Wheels clamping ........................................ page 15
13.
Operating conditions ................................... page 16
14.
Cooling ..................................................... page 17
15.
Work safety ................................................ page 17
16.
Care ......................................................... page 18
17.
Storage ..................................................... page 19
18.
Waste disposal ........................................... page 19
Speed conversion table ...................................... page 20
Dimensions tables .............................................. page 22
Other products
as listed in separate catalogues:
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Diamond and CBN grinding wheels
for woodworking industries
Since the start we focused on production of custom
grinding wheels, chiefly wheels with resin bonding compounds which work on the basis of very hard abrasives
i.e. diamond and CBN (cubic boron nitride). We focused on
grinding wheels that are used mostly in the manufacture and
sharpening of tools made of traditional tool materials and
in engineering. Through manufacturing and supplying the
above mentioned products we gravitated towards products
for dressing and maintaining of classical abrasive grinding
wheels. This is the reason why our company manufactures
and supplies several types of diamond dressers. Great interest of our customers in the purchasing of CBN mounted
points within vitrious bonding compound led us to create a
new line of products. We further improved our range of
goods with the introduction of electroplated tools.
Custom made tools allow us speedy production, variability and ‘manufacture made to measure’ products that
meet our customers’ requirements. In this case ‘custom made’
does not necessarily mean higher prices, as is usual with
other goods. Situation in our trade is quite different. Combinations of various shapes, sizes, grade, bonding compounds and concentrations of abrasive materials for tools
together with repeated requests of our customers to modify
tools further creates a perfectly diverse selection. The only
downside of custom production is the fact that mass production is nearly impossible, however, the requirements for
storing of finished product are non-existent and so is the
financial expense. This brings about a clear advantage to
the customer. Together with all the advantages of custom
made items (great choice, flexibility, good quality and personal approach) we are able to achieve excellent prices.
The great variation of types and sizes of grinding
wheels is ensured by our ingenious kit of press moulds. Usage of more universal shapes of dural bearing bodies and
of course by the specialist knowledge and experience of
our employees.
We believe our company gained a recognised position
amongst other tool manufacturers. We wish to provide tools
that are reliable and will serve to your satisfaction.
Electroplated diamond and CBN grinding wheels
CBN mounted points in vitrious bond
Diamond dressers
Hand diamond needlepoint files
Diamond pastes
Synthetic diamond powder
Service and repairs of grinding wheels and dressers
Management of DIAMOND CONTACT s.r.o.
Overview of Basic Shapes
1A1
1A 1 R-SAW
page 22
page 23
3A1
14A1
1 A1W
page 24
page 26
1C9
1U1
page 27
page 27
1V1
3 V1
14 V1
page 28
page 29
1E1
3 E1
14E1
page 30
page 31
1F1
3 F1
14F1
page 32
page 33
6A2
6 A9
page 34
page 36
9A3
11 A2
page 37
page 38
12A2-45
12 A2-20
page 40
page 42
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11A9
12A9
11 C9
page 44
page 45
12C9-45
12 C9-20
page 45
page 46
12R4
11 V9
page 47
page 48
1 2 V9
4 A2
page 48
page 50
4B2
4 C9
page 52
page 53
4V2
4 V4
page 54
page 55
4V5
4BT9
page 56
page 57
4ET9
Hand
Lap
page 57
page 58
1. INTRODUCTION
This catalogue is introducing the basic types of diamond and cubic boron nitride (CBN) grinding wheels that are
used in engineering and in related industries applications. Shape and size lines of tools are composed in regards to
the custom manufacturing in such a way that enables the greatest amount of variations and combinations. In case you
have the smallest concern when choosing your optimal tool do not hesitate to contact us, we would be happy to help
you with the specification of the tool. For reasons of keeping the catalogue clearly presented we did not include tools
that are made seldom or intended only for a narrow circle of users. These tools are presented in focused appendices
2. DIAMOND GRINDING WHEELS
Diamond is a form of pure carbon that crystallizes in cubic system. It is the hardest material available to man. Since
the 50’s, synthetic diamond is used in grinding tools, which nowadays in many cases has even better physical characteristics than its natural equivalent.
Diamond grinding wheels are intended for grinding of hard materials (materials with short or fine spall); in engineering for the following operations. Examples:
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Manufacture of parts from sintered carbide, ceramic, glass and similar materials.
Finishing of abrasion or temperature resistant surface films, mainly on the basis of ceramics.
Manufacture and sharpening of tools with incorporated sintered carbide cutting edges.
Manufacture and sharpening of solid sintered carbide tools.
Grinding of sintered carbide moulds or dies.
Diamond grinding wheels are not intended for finishing of steels including tool steel. The grinding surface can become clogged with the grinded material which sticks to the abrasive surface. Heat is generated as the steel is ground
by the diamond grains and causes a chemical reaction that carbonises the grinded object (the carbon to iron affinity).
The change within this layer causes its fragility.
3. CBN GRINDING WHEELS
Cubic boron nitride (CBN) is a material that is relatively new and has no equivalent in nature. It has many nearly
identical characters to diamond, however, slightly lesser hardness but much higher heat resistance (1200 °C and more)
and chemical stability – it is inert towards iron. CBN’s main advantage is that it does not influence the composition of
the surface layer of the grinded materials and the finished material does not stick readily to the surface as it would
with diamond.
CBN grinding wheels are intended for grinding heat processed steel with minimal hardness of 56 HRC, mainly
high-speed steel, tool steel with high content of alloying compounds that heighten hardness, some welding materials
– stellite, sintered steel, hardened cast irons etc
Characteristic applications examples:
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Manufacture and sharpening of tools with incorporated high-speed steel cutting edges.
Manufacture and sharpening of tools made completely of high-speed steel.
Manufacture and sharpening of tools with stellite welded cutting edges.
Manufacture of moulds and stamping tools made of tool steel.
Finishing of cast iron parts.
Manufacture of ball bearings, some car parts, etc.
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CBN grinding wheels are not intended for grinding of soft, non-heat processed steel. Not only this could cause
easier clogging up by the grinded material but also its usage would not be economical in comparison with abrasives
classically used for these purposes (corundum, sillicium carbide). Similarly the application of CBN is not technologically
and financially effective when grinding hard tool materials which could be finished using diamond grinding wheels.
4. BASIC CHARACTERISTICS OF GRINDING WHEELS
Characteristics of diamond and CBN grinding wheels are given by basic technological parameters, by itemising
these, the wheel should be fully specified. When ordering grinding wheels the following parameters should be indicated. In compliance with the EU standard EN 13236 the parameters are stamped on each grinding wheel or its wrap.
These parameters are as follows: shape and basic dimensions of the grinding wheel, type, grade and concentration
of abrasive, type of bonding compound.
5 ks 4A2 100-10-2-20 D151 RD 100
concentration
bond
dimensions
shape (FEPA)
number of pieces
abrasive
grain size
Specifications are always shown on the wrap and in most cases on the wheel itself, together with the type of abrasive, logo of the manufacturer, serial number and restrictions on surface speed.
A - colour identification of the abrasive
blue – diamond
red – CBN
B - logo of manufacturer or supplier
C - type of grinding wheel
D - serial number
E - restrictions on surface speed
5. SHAPES OF GRINDING WHEELS
Shape and size are the main criteria to follow when choosing a grinding wheel. The usability of the grinding wheel
for any given type of machinery and its technological parameters depend upon the correct choice as well as the
type of technological application. The right selection of shape and size can greatly lower the financial requirements
connected with the purchase of a grinding wheel and heighten the efficiency from the point of view concerning even
wear.
Basic shapes of grinding wheels are listed and periodically updated in the manufacturing catalogue. Branding of
the shapes is adjusted to EN 13236:2001 standard. Custom made grinding wheels can also be branded differently,
by the number of a technical drawing for example.
Shapes of grinding wheels are coded by an alphanumerical code made up of four components as follows:
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Shape of the bearing body (first number)
Shape of the abrasive layer (second letter)
Positioning of the abrasive layer (third number)
Possible other - supplementary information specifying modification (fourth letter)
Example of coding the shape of a grinding wheel:
For completion of information we will show the method of indicating the shape of a grinding wheel:
I. Core shapes and designations:
Identification
Shape
Identification
1
9
2
11
3
12
4
14
6
15
Shape
D iamond
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II. Shape of the superabrasive section and its designation:
Identification
Shape
Identification
Shape
Identification
A
FF
P
AH
G
Q
B
H
QQ
C
CH
R
D
J
S
DD
K
U
E
L
V
EE
LL
Y
F
M
Shape
III. Location and designation:
Identification
Shape
1
Identification
Shape
6
periphery
2
part of periphery
7
one side
3
part of side
8
both sides
4
throughout
9
inside bevel or arc
5
corner
10
outside bevel or arc
annular
IV. Modification and designation:
Identification
Shape
Identification
B
Shape
S
drill and counterbore
segmented diamond sections
C
SS
drill and countersink
segmented and slotted
H
T
plain hole
threaded holes
M
V
holes plain and threaded
superabrasive inverted
P
W
on shaft
relieved one side
Q
Y
superabrasive inserted
superabrasive inserted and inverted
R
relieved two sides
6. dimensions OF GRINDING WHEELS
Dimensions of grinding wheels are stated in catalogue tables together with their respective shapes. Bearing in mind
that due to custom manufacture some sizes range from smallest and greatest valuation we state the optimum sizes (i.e.
sizes that are tried and tested and most commonly used). We are able to manufacture products with sizes outside the
scope of the table values after an agreement with the customer. The itemisation of size marking for the grinding wheels
is as follows:
Labelling of grinding wheel dimensions:
Identification Description
Identification Description
D
Outside diameter
Y
Clamping diameter of the shank
E
Thickness of the clamping part
T
Overall thickness
H
Bore diameter in tolerance H7
U
Thickness of superabrasive section
J
Smallest diameter of trapered wheel
V
Angle of abrasive section
K
Internal diameter of recess on trapered wheel
W
Rim width
R
Radius
X
Depth of superabrasive section
L
Overall length of the shanked tool
L1
Length of the shank neck
Selecting the correct diameter of a grinding wheel needs to reflect the parameters of the work piece, and in the
case of constant working revolutions of a grinding machine shaft the prescribed optimal cutting speed of a grinding wheel has to be taken into consideration. The whole width of the grinding wheel’s abrasive layer should be used
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D iamond
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equally when grinding. This can be achieved by the correct selection of abrasive layer width together with optimal
oscillation value of the grinding wheel, as shown by the picture:
correct
wrong
Narrow layers enable higher grinding output with lesser rise in temperature but can transfer the machine’s vibrations to the surface of the work-piece more easily. By selecting a wider layer it is possible to achieve quieter grinding,
however, the output will be lowered and the cutting resistance and temperature will rise.
The thickness of the abrasive layer can influence the expense, it is however necessary to choose correctly as to
prevent deformation and attrition on the bearing body of the grinding wheel when grinding tools with more than one
cutting edge or with narrow distances between the cutting edges. This is a fault that happens inconspicuously over time
and can cause substantial damage to the abrasive layer. In this case it is necessary to choose a different shape or size
of the grinding wheel.
impending collision when drifting
impending collision when rebounding
7. ABRASIVE MATERIAL
Abrasives used in our tools are synthetic diamond or CBN. We have several types of grains with different shapes
and strengths. In most cases we use electroplated grains with coating of nickel, copper and occasionally titanium. In
some cases we use abrasives without coating or in combinations. The exact characteristics of the abrasive alone are
very closely related with bonding compounds used for specific technological application of the tool; for this reason
we do not refer to abrasive characteristics as such but always in combination with the characteristics of the bonding
compound.
Generalised comparison of abrasive materials:
Parameter
CBN
Identification:
B (BB)
Specific weight:
Mohs scale:
Temperature tolerance limit:
Toughness:
Main areas of use:
Diamond
D
3.58 g/cm
3.52 g/cm3
9.6
10
1200 °C
800 °C
more tenacious
more fragile
HSS, hardened steels and cast iron
SK, ceramics, glass, stone
3
BB is code referring to CBN of specific type intended for use in performance grinding.
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Applications of abrasive materials:
Grinded material
High-speed steel (HSS)
Hardened steel (above 56 HRC)
Case-hardened steel
High alloy steels
Cast iron (white, hardened, etc.)
Heat resistant materials
Sintered carbide, cermet
Ceramics, glass and porcelain
Stone, precious stone and semiprecious stone
Stellite, polycrystalline diamond
Graphite, sillicium (Si)
Composites (glass array, etc.)
CBN
Diamond
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-
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8. Grain size
Grain size of the used abrasive directly influences the coarseness of the grinded object and also the removal ability
of the grinding wheel. Identification of grain size is marked according to the standard ISO 6106 (FEPA). The following
table of grain size grading states other equivalent grading for comparison reasons.
Overview of grain sizes:
FEPA standard (ISO 6106)
Diamond
CBN
US Standard
(ASTM-E-11-70)
Grain size in mm
FEPA standard
(ISO 6106)
Grain size in mm
D 711
B 711
25/30
630/500
D 35
40/32
D 601
B 601
30/35
630/500
D 25
32/28
D 501
B 501
35/40
500/400
D 20
28/20
D 426
B 426
40/45
400/315
D 15
20/14
D 356
B 356
45/50
400/315
D 10
14/10
D 301
B 301
50/60
315/250
D6
10/7
D 251
B 251
60/70
250/200
D2
7/2
D 213
B 213
70/80
200/160
D 181
B 181
80/100
200/160
D 151
B 151
100/120
160/125
D 126
B 126
120/140
125/100
D 107
B 107
140/170
100/80
D 91
B 91
170/200
100/80
D 76
B 76
200/230
80/63
D 64
B 64
230/270
63/50
D 54
B 54
270/325
50/40
D 46
B 46
325/400
50/40
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The relation of grain size of a grinding wheel and the coarseness it can produce on grinded surfaces:
Grain size
Diamond
CBN
D 213
B 251
D 181
B 213
D 151
B 181
D 126
B 151
D 107
B 126
D 91
B 107
D 76
B 91
D 64
B 76
D 54
B 64
D 46
B 54
D 40
B 46
D 35
-
D 30
-
D 25
-
D 20
-
D 15
-
D 10
-
D7
-
D6
-
Application
Surface roughness
Ra
Grinding and rough cutting with the emphasis on very high performance
1.2
Grinding and rough cutting
0.8
Medium grinding and sharpening of
cutting tools
0.4
Finishing of grinding
0.2
Lapping and fine grinding
0.1
Polishing
0.08
Fine polishing
0.05
Very fine polishing
0.025
The values of surface roughness in Ra are meant only as benchmark values, the roughness of the surface is influenced by other factors, mainly by the operating conditions of the grinding wheels, the condition of the machinery and
the concentration of abrasives etc.
9. bonds
A bonding compound together with abrasives makes up the abrasive layer. Our company manufactures majority
of grinding wheels with the use of resinous (phenolic) bonding compounds; we use other bonds only in some cases
(these are: special polymeric or metallic bonding compounds). CBN mounted points are also manufactured using vitrious bonds. In addition to these we supply some types, mainly function form tools, which use a electroplating technique,
where the bond is created by nickel deposited during the galvanisation process. Some types of bonding compounds
require cooling.
The complete identification of the type of bonding compound adheres to the following example. The first letter always identifies the bonding compound type – phenolic (R), polymeric (P), vitrious (V) and galvanic (Ni). Some bonding
compounds which require cooling when in use are identified on the end by the letter W. On the other hand, bonding
compounds that have proven to be appropriate for dry grinding are identified by the letter D. For clarification the
following table lists bonding compounds together with the suitable type of grinding:
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Main types of bonds:
Identification
Type of grinding
Use
Hardness
Cooling
RB3D
medium and rough
narrower abrasive layers
higher
RB4D
fine to rough
wider abrasive layers
medium
RB5D
medium and rough
grinding by the rim
high
RX3D
fine to rough
wider abrasive layers
medium
fine to rough
wider abrasive layers
lower
very fine
special use
very low
RB2W
medium and rough
universal
medium
RB5W
medium and rough
production grinding
high
RB7W
medium and rough
production grinding
very high
RX2W
fine to rough
soft grinding
lower
medium and rough
selected types of wheels
very high
fine and medium
CBN for grinding bores
high
universal
CBN for grinding bores
medium
fine and medium
CBN for grinding bores
lower
medium and rough
special and form tools
very high
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■
■
■
■
RX4D
RM1D
P2C
Type of bond
phenolic
polymeric
V5
V2
vitrious
V3
Ni
electroplated
10. CONCENTRATION
Concentration of abrasive material is the relationship of the weight of abrasive to the volume of abrasive layer; it
is stated as per cent. The base of representation, i.e. 100% regarded relationship is such where 1 cm3 contains 0.88
g (4.4ctr) of abrasive.
Overview of concentrations:
Concentration
Volume
(g/cm )
(crt/cm )
25
0.22
1.1
50
0.44
2.2
75
0.66
3.3
100
0.88
4.4
125
1.10
5.5
150
1.32
6.6
200
1.76
8.8
3
3
Degree
of concentration
low
medium
high
very high
Use
polishing (rarely)
very fine grinding
common grinding
grinding by the rim
special cases
only electroplated tools
Low concentrations support self-sharpening abilities of a grinding wheel and lower the generation of heat, however,
the longevity of the abrasive layer and stability of its shape is also lowered and the roughness of the surface increases.
Medium concentrations contain optimal amount of abrasive which are suitable for the majority of technological operations. High concentrations heighten the longevity and the stable shape of a grinding wheel, the generation of heat
when grinding also rises and the self-sharpening abilities drop.
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D iamond
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11. MACHINERY REQUIREMENTS
The use of a diamond and CBN grinding wheels requires a superior technological condition of machinery than is
necessary when using classical vitrious grinding wheels (i.e. on the basis of corundum or sintered silica). The machinery
must be appropriately rigid, without vibrations, the grinding shaft must not show both radial and axial shimmy higher
than 0.005mm. The work-piece fixing mechanism must be rigid enough as to prevent vibrations when grinding. Any
breach of these requirements can have a negative influence upon the longevity of the grinding wheel, the roughness
of the grinded surface, execution of the grinding and the evenness of wear.
12. WHEELS clamping
Grinding wheel is fixed to the spur or the flange of the grinding machine. It is appropriate to use a dial gauge to
measure its radial and axial shimmy when fixing the grinding wheel to the machine. By turning the spur slowly it is possible to find a position in which the measured quantities are at their lowest; fix the grinding wheel in this position and
repeat the measurement. The working surface of the grinding wheel should be in geometrical allowance towards the
axis of the rotation. Allowance in this case means combined allowance i.e. the total of allowances of all conformations
(straightness, planeness, orbicularity, cylindricity). The optimal values for the allowance are stated by the following
table. It is also necessary to consider the fixing of the grinded material and the grade of the grinding wheel.
Shape tolerancing:
Grain size
FEPA
Mechanical fixing
Hand held with the use of an arm rest
Main
work surface
Ancillary work
surface
Main
work surface
Ancillary work
surface
D 7 - D 20
0.005
0.01
0.01
0.02
D 25 - D54
0.01
0.02
0.02
0.03
D 64 - D 126
0.02
0.03
0.03
0.04
D 151 - D 251
0.03
0.04
0.04
0.05
Seating of a grinding wheel on the centring part of the clamping component should be clearance fit (H7/g6). We
recommend, if at all possible, to refrain from removing the grinding wheel from its position on the spur or flange during all of its lifetime. It is necessary to fix a grinding wheel to the seating face of the flange with the branding facing
outwardly. If required by the customer we can place the branding in such a way as not to obstruct reverse fixing.
We recommend statically balancing grinding wheels that are fixed by a collar with balancing points.
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13. OPERATING CONDITIONS
When determining the best operating conditions for a grinding wheel it is necessary to bear in mind the information
which accounts for the type of grinded material; its mechanical characteristics, the method of grinding, required values
of the work-piece, the parameters of the machinery, time restrictions etc. This is the main reason why the operating
conditions can be stated only as a rough guide for the most common types of grinding. The following table states values
of operating conditions for the use of medium grades and abrasive concentrations for the main types of grinding.
Surface speed of diamond and CBN grinding wheels according to the type of bonding compound in m/s:
Abrasive
Bond
Diamond
RB2W
RB4W
RB5W
Grinding with cooling
Grinding without
cooling
Surface
Deep
25 - 40
25 - 40
25 - 35
-
-
18 - 35
-
25 - 40
25 - 40
-
-
RB7W
RX2W
RB3D
RB4D
RB5D
14 - 20
RX3D
RX4D
P2C
CBN
RB2W
RB3W
RB4W
RB5W
RB3D
14 - 20
RB4D
14 - 25
RX3D
RX4D
V5
V3
V2
25 - 35
-
14 - 20
20 - 30
Most commonly asked questions are concerning the cutting (surface) speeds of grinding wheels. The basic answer
is as follows: when grinding without cooling the mid range of the cutting speed equals to about 16 m/s, when using
medium-intensive cooling the speed can increase to about 25 to 30 m/s. When grinding on CNC machines where the
working space is enclosed and the tool usually cooled from several points by pressurised coolant the surface speed
can reach 40 m/s. Exceeding these speeds could cause localised destruction of the resin bond due to high temperature
which develops on the surface of the abrasive grains. When calculating the optimal surface speed it is understandably necessary to bear in mind the technical parameters of the grinding machine, dimensions, mainly the width of the
abrasive layer and the size of the grinded surface. Our products are manufactured in accordance with the standard
mentioned above and marked with values stating the maximum surface speed and revolutions. For this type of grinding
wheels the safety margin of surface speed is stated as 63 m/s. However, many of our customers take this value to be
the prescribed value for the operation of the tool. For this reason we state it on the tool itself as 40 m/s.
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Information on operating conditions for diamond and CBN grinding wheels
according to the type of grinding:
Type of grinding
Peripheral
Peripheral
Speed of the
velocity of wheel velocity of work- feed
[m/s]
piece [m/min]
[m/min]
Cross feed
[mm]
In-feed
[mm]
Plane grinding
25 - 40
-
5 - 20
2-8
0.01 - 0.05
Spherical grinding
25 - 40
40
4
-
0.005 - 0.02
Grinding of bores
5 - 30
40
0.2 - 2
-
0.002 - 0.015
Grinding with oscillation
25 - 40
-
5 - 12
-
0.02 - 0.06
In-feed grinding
25 - 40
-
0.5
-
1
14. COOLING
Cooling grinding wheels lengthens their longevity and performance it also improves the quality of the grinded
surface and the cleanliness of the surrounding environment. Grinding wheels that are specified for use without cooling
contain abrasive and bonding compound which ensures higher ability of self-sharpening, however, this is detrimental
to their longevity. We recommend the cooling in all cases where it is allowed by the machinery and the character of
the work.
Coolant must be brought by the means of an appropriate nozzle to the contact point between the grinding wheel
and the work-piece in a way that allows the fluid to be pulled into the cut. Cooling of diamond and CBN grinding
wheels requires special coolant fluids which are offered by many companies manufacturing and supplying these. When
preparing, using and storing coolant fluids adhere to manufacturer’s recommendations.
15. WORK SAFETY
Before fitting any tool onto a grinding machine it is always necessary to inspect carefully each grinding wheel for
possible damage caused by transportation or storing.
■ Damaged grinding wheels must not be used.
■ Only trained and experienced operators or an appointed tool setter can fit grinding wheels onto the machin■
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ery.
The use of grinding wheels is allowed only on machinery which is constructed according to the requirements
of norm.
Fixing spurs or flanges must not be damaged; it is not suitable to use such fixing components that are worn
down by the use with classical vitrious abrasive.
The seating faces of spurs or flanges must be thoroughly cleaned before attempting fitting; the grinding wheel
must be mounted on the fixing component easily and without the use of force.
Tightening the bolts and nuts must be done evenly and only using tools that are standardized by the grinding
machine manufacturer.
Cleaning and dressing of grinding wheels must only be carried out in manner described within this guide.
Diamond dressers are intended only for use with grinding wheels with vitrious bond.
It is necessary to use appropriate and effective dust and particle extraction when grinding without the use of
cooling fluids.
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WARNINGS:
■ Chemical or thermal modifications of grinding wheels are strictly prohibited.
■ Mechanical modifications to the bearing body of the grinding wheel are to be carried
out only by the manufacturer.
■ It is prohibited to use grinding wheels in hand held grinders or drills.
When using diamond and CBN grinding wheels the use of personal protection as follows is required:
■
■
■
■
Sight – approved goggles or protective shields
Hearing – ear protection in situations where required by noise levels
Breathing – when grinding take care to ensure effective dust extraction, if this is not possible use respirator.
Pay attention to personal hygiene.
16. CARE
It is necessary to clean grinding wheels immediately if the grinding characteristics are not up to standard. If in doubt clean. This is
usually caused by the sticking of the surface of the abrasive layer
with grinded material when grinding without cooling or when used
to grind unsuitable materials. The cleaning itself is carried out with
the use of a enlivening corundum stone, pumice; reviver with rubber
bonding compound. Or at least with a shard of a SiC grinding wheel.
It is appropriate to wet the grinding wheel prior to cleaning.
To achieve effective cleaning and enlivening for face grinding
wheels these should be removed from the machinery. Cleaning is carried out on a flat glass panel with the use of free SiC abrasive by
circular movements. As shown on the picture.
Dressing of grinding wheels should be considered only after the
geometrical shape has been lost (i.e. when the edges become rounded, if the abrasive layer becomes uneven etc.) dressing is carried out
using a corundum grinding wheel of a higher grade, by about two
degrees and of K or M hardness on a centre grinder with cooling. The
dressed grinding wheel including the spur is fixed in the operating
spindle head and its speed should not exceed 6 m/s. Surface speed
of the vitrious grinding wheel is usually 20 to 30 m/s.
It is also appropriate to use a free standing dressing machine,
which is clamped to the work bench of the grinding machine. The SiC
grinding wheel is driven by the friction of the dressed grinding wheel and slowed down by a centrifugal brake.
18
D iamond
C on tac t
s. r. o.
17. STORAGE
Grinding wheels are packed individually, or after an agreement with the customer we can pack several pieces in
one box. We use folded or glued boxes made of micro-corrugated card. To prevent movement within the box we use
PE bubble wrap. The size of the packaging is based on the dimensional line of our grinding wheels. Postal delivery
items are packed in standard cardboard boxes filled with extruded polystyrene.
For the purposes of storage we recommend the use of original boxes; stored in such a way as to prevent mechanical damage and impacts. Store in a dry place (with humidity of 80%) and at minimal temperature of + 10oC. The
maximum duration of storage is 5 years.
18. WASTE DISPOSAL
When the diamond or CBN abrasive layer becomes completely worn out, the dural bearing bodies can be disposed of in manner similar to any other aluminium waste. In cases where parts of the abrasive layer remain on the
bearing body (due to uneven wear or damage) it is necessary to mechanically separate these materials. This can be
done by a lathe (‘pricking out’) and then dispose of the abrasive separately in a competent way or by returning it to
the manufacturer.
Paper packaging and wraps made of PE foil can be recycled where facilities exist. Our company has an agreement of mandatory return policy on packaging materials and the recycling of these in accordance with the law.
19
speed conversion table for speed of rotation
and peripheral speed
Diameter
of superabrasive
[mm]
Maximum operating speed vs [m/s]
5
6
8
10
12
16
20
25
32
35
40
45
6
16000
19100
25500
31900
8
12000
14400
19100
24000
29000
38200
10
9600
11500
15300
19100
23000
30600
38200
48000
20
4800
5750
7650
9550
11500
15300
19100
23900
30600
33500
38200
43000
25
3850
4600
6150
7650
9200
12300
15300
19100
24500
26800
30600
34400
30
3190
3820
5100
6380
7640
10190
12740
15960
20400
22300
25500
28650
40
2400
2900
3850
4800
5750
7650
9550
11950
15300
16750
19100
21500
50
1950
2300
3100
3850
4600
6150
7650
9550
12250
13400
15300
17200
60
1600
1910
2550
3200
3850
5100
6400
8000
10200
11150
12750
14350
75
1280
1530
2040
2540
3060
4080
5100
6400
8150
8950
10200
11500
80
1200
1450
1950
2400
2900
3850
4800
6000
7650
8400
9550
10750
100
960
1150
1550
1950
2300
3100
3850
4800
6150
6700
7650
8600
125
770
920
1250
1550
1850
2450
3100
3850
4900
5350
6150
6900
150
640
770
1050
1300
1550
2050
2550
3200
4100
4500
5100
5750
160
600
720
955
1200
1450
1950
2390
2980
3850
4200
4780
5380
175
550
660
870
1100
1310
1750
2200
2750
3500
3850
4400
4950
180
530
640
850
1080
1300
1700
2150
2700
3400
3750
4250
4800
200
480
580
765
955
1150
1550
1950
2400
3100
3350
3850
4300
250
380
460
615
765
920
1250
1550
1950
2450
2700
3100
3450
300
320
380
510
640
765
1050
1300
1600
2050
2250
2550
2870
350
280
330
440
550
655
875
1100
1400
1750
1950
2200
2450
20
dimensions
TAbles
1A1
10
12
14
15
16
18
20
25
30
35
40
45
50
60
65
75
80
90
100
125
130
140
150
160
175
200
225
250
300
350
U
min.
3
3
3
3
3
3
3
5
5
5
5
5
5
5
5
5
5
5
5
6
6
6
10
10
10
15
15
15
15
15
X
recom.
8
8
10
10
10
10
10
10
10
10
10
10
5
5
5
5
5
5
6
6
6
6
10
10
10
10
12
12
12
15
15
15
15
15
15
20
10
10
10
10
8
8
8
8
8
8
10
10
10
10
12
12
15
15
15
15
15
15
20
20
15
15
15
10
10
12
12
12
12
15
15
20
20
20
20
20
15
12
14
15
15
20
20
20
20
20
25
25
25
20
20
20
15
15
15
15
15
15
20
20
25
max.
min.
recom.
max.
15
15
20
20
20
20
20
20
25
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
3
3
3
2
2
2
2
2
3
3
2
3
3
3
3
3
3
4
2
2
2
2,5
2
2
5
5
5
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
2
2.5
2,5
2,5
2,5
2,5
2,5
3
3
3
3
3
3
3
3
5
5
5
5
5
3
3
3
8
5
3
3
3
5
3
3
3
4
5
5
5
H
Diameter of the fixing bore according to customer’s requirements
D
Variations for grinding blind and stepped bores:
6A1.O
6A1P.O
6C9.O
Parameters D, X, U according to the table for 1A1; parameters J, F, W, E according to prior agreement.
Recommended dimensions of the grinding wheels are under printed by a darker colour
22
D iamond
C on tac t
s. r. o.
Derived variations:
1A1P
1A1R
6A1
9A1
6A1P
D
50
75
100
125
150
200
250
300
U
min.
dop.
max.
0.5
0.8
1
1.2
1.5
1.5
1.5
1.5
0.8
1
1.5
1.5
1.8
1.8
1.8
1.8
1
1.5
2
2.5
2.5
2.5
2.5
2.5
X
E
H
5
5
6
6
5
6
6
7
0.4
0.6
0.8
0.9
1
1
1
1
Diameter of the fixing bore
according to customer’s
requirements
1A1R - SAW
23
14A1
D
40
45
50
60
65
75
80
90
100
125
130
140
150
160
175
200
225
250
300
350
U
min.
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.5
1.5
2
2
2
3
3
X
recom.
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
2
2
2
2
2
2
3
3
3
5
5
5
3
3
3
3
3
3
3
3
3
3
3
3
3
3
5
5
5
6
8
8
4
4
4
4
4
5
5
5
5
5
5
5
5
5
6
6
6
8
10
10
6
6
6
6
6
6
8
8
8
10
15
15
max.
min.
recom.
max.
5
5
5
5
5
6
6
6
8
10
15
15
15
15
15
15
15
15
20
20
3
3
3
2
2
2
2
2
3
3
2
3
3
3
3
3
3
4
2.5
2.5
3
3
3
5
5
5
10
5
5
10
12
10
10
12
10
10
10
10
10
10
10
3
3
3
3
3
5
5
5
5
5
3
3
5
3
3
3
8
6
5
5
3
6
5
3
3
3
4
5
5
5
T
J
H
5
5
5
5
5
6
6
6
8
10
15
15
15
15
15
15
15
15
20
20
30
35
38
40
45
50
55
60
70
100
105
115
125
130
140
160
180
200
240
280
Diameter of the fixing bore according to customer’s requirements
3A1
Recommended dimensions of the grinding wheels are under printed by a darker colour
24
D iamond
C on tac t
s. r. o.
Derived variations:
3A1R
14A1R
Possible modification to the abrasive section:
B
1B1, 3B1, 14B1, 1B1P,
1B1R, 6B1, 9B1, 6B1P
D
1D1, 3D1, 14D1, 1D1P,
1D1R, 6D1, 9D1, 6D1P
M
1M1, 3M1, 14M1, 1M1P,
1M1R, 6M1, 9M1, 6M1P
L
1L1, 3L1, 14L1, 1L1P,
1L1R, 6L1, 9L1, 6L1P
Q
1Q1, 3Q1, 14Q1, 1Q1P,
1Q1R, 6Q1, 9Q1, 6Q1P
For these modification also indicate the parameters as plotted in the technical drawing.
25
1A1W
A
B
T
D
X
Y
12
12
12
12
12
12
15
15
15
1
1.5
2
2.5
1
1.5
2
2.5
3
3
3
3
3
6
6
6
6
6
60
60
60
15
15
20
20
20
20
20
20
20
20
3
3
3
3
3
3
3
3
3
3
6
6
60
60
60
60
60
60
60
60
60
60
min.
recom.
max.
9
10
11
12
2.5
2.5
3
3
3
4
5
5
5
6
6
6
6
8
8
10
10
10
13
14
15
16
17
18
19
20
22
25
5
5
5
5
5
5
5
5
5
5
10
10
15
15
15
15
15
15
15
15
5
6
7
8
6
6
6
8
8
8
8
8
L
Figure
80
80
80
60
60
60
60
60
60
8
8
8
10
10
10
10
10
A
80
80
80
80
80
80
80
80
80
80
80
80
80
80
80
100*)
100*)
100*)
100
100
100
100
100
B
*) Length 100 mm for Y only 8 mm
1A1W.O
D
T
min.
recom.
max.
4
2.5
6
8
5
2.5
6
8
6
2.5
6
8
7
3
6
8
8
3
6
15
9
10
4
5
8
10
15
15
X
Y1
L1
1
1.5
1
1.5
1
2
1
2
1.5
2
2
2
2
3
3
4
3
5
4
5
5
6
8
8
8
12
12
12
12
15
15
15
15
Y
3
3
L
6
6
6
6
6
6
6
6
6
6
8
8
8
8
60
60
60
60
60
60
60
60
60
60
60
80
80
80
80
80
80
80
80
80
80
80
100*)
100*)
100*)
100
*) Length 100 mm for Y only 8 mm
Recommended dimensions of the grinding wheels are under printed by a darker colour
26
D iamond
C on tac t
s. r. o.
1C9
U
W
X
min.
recom.
max.
min.
recom.
max.
recom.
6
8
8
10
10
12
15
20
20
10
10
10
10
10
15
20
25
25
20
20
20
20
25
30
30
30
30
5
6
6
6
6
6
10
10
10
7.5
10
10
10
10
15
15
15
15
15
15
20
20
20
20
20
25
25
3
3
3
3
3
3
3
3
4
75
100
125
150
175
200
250
300
350
H
Diameter of the fixing bore
according to customer’s
requirements
D
D
75
100
125
150
175
200
250
300
350
3U1
X
E
min.
recom.
U
max.
min.
recom.
W
max.
recom.
min.
8
10
10
10
10
12
15
15
20
10
15
15
15
15
18
20
20
25
15
20
20
20
20
22
25
25
30
6
6
6
6
6
6
10
10
10
7.5
10
10
10
10
10
15
15
15
10
15
15
20
20
20
20
25
25
3
3
3
3
3
3
3
3
4
5
6
6
10
10
15
15
15
15
J
H
50
70
100
125
140
160
200
240
280
Diameter of the fixing bore
according to customer’s
requirements
1U1
14U1
27
20
25
30
35
40
45
50
60
65
75
80
90
100
125
130
140
150
160
175
200
225
250
300
350
U
min.
3
5
5
5
5
5
5
5
5
5
5
5
6
6
6
6
10
10
10
15
15
15
15
15
X
recom.
5
5
5
5
6
6
6
6
6
6
6
6
6
6
6
8
10
10
10
15
15
15
15
15
10
10
10
10
15
15
15
20
20
20
20
20
8
8
8
8
10
10
10
10
10
10
10
10
15
15
15
15
20
20
20
25
25
25
25
25
max.
min.
recom.
max.
10
10
10
10
15
15
20
20
20
20
20
20
25
25
30
30
30
30
30
30
30
30
30
30
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
4
2
2.5
2.5
2.5
2.5
2.5
3
3
3
5
5
5
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
3
3
3
3
3
3
3
3
3
5
5
5
5
5
5
5
5
5
3
3
3
3
3
4
8
8
8
8
8
8
5
5
5
5
5
5
V
H
Diameter of the fixing bore according to customer’s requirements
D
Selectable angle of the point 30° – 85°
bearing in mind other dimensions of the grinding wheel
1V1
Derived variation with radius:
1VF1
Recommended dimensions of the grinding wheels are under printed by a darker colour
28
D iamond
C on tac t
40
45
50
60
65
75
80
90
100
125
130
140
150
160
175
200
225
250
300
350
U
min.
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.5
1.5
2
2
2
3
3
X
recom.
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
2
2
2
2
2
2
3
3
3
5
5
5
3
3
3
3
3
3
3
3
3
3
3
3
3
3
5
5
5
6
8
8
4
4
4
4
4
5
5
5
5
5
5
5
5
5
6
6
6
8
10
10
6
6
6
6
6
6
8
8
8
10
15
15
max.
min.
recom.
max.
5
5
5
5
5
6
6
6
8
10
15
15
15
15
15
15
15
15
20
20
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
4
2.5
2.5
3
3
3
5
5
5
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
3
3
3
3
3
3
3
3
3
5
5
5
5
5
5
5
5
5
3
3
3
3
3
4
8
8
8
8
8
8
5
5
5
5
5
5
T
J
V
5
5
5
5
5
6
6
6
8
10
15
15
15
15
15
15
15
15
20
20
30
35
38
40
45
50
55
60
70
100
105
115
125
130
140
160
180
200
240
280
H
Diameter of the fixing bore according to customer’s requirements
D
14V1
Selectable angle of the point 30° – 85°
bearing in mind other dimensions of the grinding wheel
3V1
s. r. o.
Derived variations with radius:
3VF1
14VF1
29
recom.
3
3
3
3
5
5
5
5
5
5
5
5
5
5
5
5
6
6
6
10
10
10
15
15
15
15
15
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
6
6
6
6
10
10
max.
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
8
8
8
8
10
15
15
15
15
15
8
8
8
8
8
8
10
10
10
10
12
12
12
12
12
12
15
20
20
20
20
20
8
8
8
8
8
8
8
8
8
10
10
10
10
10
10
15
15
15
15
15
15
10
10
10
10
10
10
10
10
10
15
15
15
15
15
15
20
20
20
20
20
20
20
20
20
25
25
25
X
V
H
Diameter of the fixing bore according to customer’s requirements
15
16
18
20
25
30
35
40
45
50
60
65
75
80
90
100
125
130
140
150
160
175
200
225
250
300
350
U
min.
30° to 179°
D
Depends on the width U and angle V
1E1
Variation for wider wheels:
Modification of the abrasive section:
1EE1
1EF1
Recommended dimensions of the grinding wheels are under printed by a darker colour
30
D iamond
C on tac t
40
45
50
60
65
75
80
90
100
125
130
140
150
160
175
200
225
250
300
350
U
min.
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.5
1.5
2
2
2
3
3
recom.
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
2
2
2
2
2
2
3
3
3
5
5
5
3
3
3
3
3
3
3
3
3
3
3
3
3
3
5
5
5
6
8
8
max.
4
4
4
4
4
5
5
5
5
5
5
5
5
5
6
6
6
8
10
10
6
6
6
6
6
6
8
8
8
10
15
15
5
5
5
5
5
5
5
5
5
6
6
6
10
10
10
15
15
15
15
15
X
V
T
J
H
5
5
5
5
5
6
6
6
8
10
15
15
15
15
15
15
15
15
20
20
30
35
38
40
45
50
55
60
70
100
105
115
125
130
140
160
180
200
240
280
Diameter of the fixing bore according to customer’s requirements
D
30° to 179°
14E1
Depends on the width U and angle V
3E1
s. r. o.
Variation for very narrow section:
14E9
31
1F1
3
3
3
3
4
4
4
4
5
5
5
5
5
5
5
5
6
6
6
10
10
10
15
15
15
15
15
X
R
recom.
max.
min.
max.
min.
max.
10
10
10
10
10
10
10
10
15
15
15
15
20
20
20
20
20
20
20
20
20
20
20
20
20
20
20
2.5
2.5
2.5
2.5
3
3
3
3
3
3
3
3
3
3
3
3
4
4
4
6
6
6
8
8
8
8
8
6
6
6
6
6
6
6
6
8
8
8
8
12
12
12
12
12
12
12
12
12
12
12
12
12
12
12
1.5
1.5
1.5
1.5
2
2
2
2
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
3
3
3
5
5
5
7.5
7.5
7.5
7.5
7.5
5
5
5
5
5
5
5
5
7.5
7.5
7.5
7.5
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
H
Diameter of the fixing bore according to customer’s requirements
15
16
18
20
25
30
35
40
45
50
60
65
75
80
90
100
125
130
140
150
160
175
200
225
250
300
350
U
min.
U=2xR
D
Variation for wider wheels:
1FF1
Recommended dimensions of the grinding wheels are under printed by a darker colour
32
D iamond
C on tac t
D
40
45
50
60
65
75
80
90
100
125
130
140
150
160
175
200
225
250
300
350
U
min.
1
1
1
1
1
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.2
1.6
1.6
2
2
2
3
3
X
R
recom.
max.
min.
max.
min.
max.
4
5
5
5
5
5
5
5
5
6
6
6
10
10
10
15
15
15
15
15
2
2
2
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
4
5
5
5
5
5
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
0.5
0.5
0.5
0.5
0.5
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.6
0.8
0.8
1
1
1
1.5
1.5
2
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
3
3
3
5
5
5
7.5
7.5
7.5
7.5
7.5
T
J
H
5
5
5
5
5
6
6
6
8
10
15
15
15
15
15
15
15
15
20
20
30
35
38
40
45
50
55
60
70
100
105
115
125
130
140
160
180
200
240
280
Diameter of the fixing bore according to customer’s requirements
14F1
U=2xR
3F1
s. r. o.
Variation for very narrow section:
14F9
33
6A2
W
min.
50
60
2
2
75
2
80
90
2
2
100
2
125
2
130
140
2
2
150
2
160
2
175
3
200
3
250
3
300
3
350
4
X
recom.
3
3
3
7.5
3
3
3
8
3
8
5
5
5
10
5
5
15
6
15
10
25
10
25
10
25
5
5
5
10
5
5
5
10
5
10
6
6
6
12
10
8
20
8
20
15
30
15
30
15
30
6
12
10
10
6
12
6
12
10
10
8
15
15
10
25
10
25
20
35
20
35
20
35
max.
min.
8
10
1
1
1
1.5
2
2
15
1
2
15
15
1
1
15
T
recom.
E
max.
recom.
3
3
5
5
X + 18
7
3
4
7
2
2
3
3
4
4
7
7
1
2
3
4
10
X + 19
10
20
1
2
3
4
10
20
20
1
1
3
3
4
4
5
5
10
10
20
1.5
3
4
5
10
20
1.5
3
4
5
10
30
2
4
5
6
10
30
2
4
5
6
10
X + 22
13
40
2
4
5
6
10
40
3
4
5
6
10
X + 27
15
50
3
4
5
6
10
H
Diameter of the fixing bore according to customer’s requirements
D
Derived variations:
6V5
6V4
Recommended dimensions of the grinding wheels are under printed by a darker colour
34
D iamond
C on tac t
s. r. o.
6M2
6Q2
6C2
6A2.SH
D
150
175
200
225
250
300
350
500
W
X
min.
recom.
max.
min.
recom.
max.
20
20
30
30
40
30
30
-
40
60
75
75
75
80
100
175 **)
70
80
90
100
110
130
150
-
2
2
3
3
3
3
3
-
3
3
3
3
3
3
3
5
5
5
5
5
5
5
5
-
T
H
15
20
20
25
25
30
30
40
*)
*) It is necessary to specify the fixing point: a bore, a bore with thread, conical spur, spur with thread, bores for bolts etc. according to prior agreement
**) The abrasive section is composed of six tightly contiguous segments
Modification of the abrasive section
with a deeper edge:
6C2.SH
35
6A9
50
60
75
80
90
100
125
130
140
150
160
175
200
250
300
W
min.
1
1
1.5
1.5
1.5
2
2
2
2
2
3
3
3
3
3
X
recom.
2
2
2
2
2
2
2
3
3
3
3
3
3
2
2
3
2
5
5
3
2
3
3
5
5
4
4
4
5
5
5
5
5
5
5
5
6
6
6
6
8
8
max.
min.
5
5
5
5
5
10
10
10
10
10
10
10
10
10
10
3
3
3
3
3
5
5
5
5
5
5
5
5
8
8
T
recom.
3
3
5
5
5
6
8
8
8
8
8
8
8
10
10
5
5
6
6
6
8
10
10
10
10
10
10
10
15
15
max.
6
6
10
10
10
10
15
15
15
15
15
15
15
20
20
15
15
15
15
15
20
20
20
20
20
20
25
25
25
25
recom.
E
H
10
X + 20
X + 23
13
X + 25
X + 30
15
Diameter of the fixing bore
according to customer’s requirements
D
20
Derived variations:
6B9
6A10
Recommended dimensions of the grinding wheels are under printed by a darker colour
36
D iamond
C on tac t
s. r. o.
D
75
100
125
150
175
200
250
W
min.
3
3
3
3
5
5
5
X
recom.
3
3
5
5
5
5
5
5
5
6
6
10
10
10
10
10
10
10
15
15
15
max.
min.
recom.
max.
10
20
25
25
30
35
40
1.5
1.5
2
3
3
3
4
3
3
3
3
3
4
5
5
5
5
5
5
6
6
T
E
H
20
8
22
10
25
14
30
35
18
20
Diameter of the fixing
bore according to customer’s requirements
9A3
37
11A2
50
60
W
min.
2
2
75
2
80
90
2
2
100
2
125
2
130
140
2
2
150
2
160
2
175
3
200
3
250
3
X
recom.
3
3
3
7.5
3
3
3
8
3
8
5
5
5
10
5
5
15
6
15
10
25
5
5
5
10
5
5
5
10
5
10
6
6
6
12
10
8
20
8
20
15
30
6
12
10
10
6
12
6
12
10
10
8
15
15
10
25
10
15
20
35
T
max.
min.
recom.
max.
8
10
1
1
1
1.5
2
2
3
3
5
5
15
1
2
3
4
7
15
15
1
1
2
2
3
3
4
4
7
7
15
1
2
3
4
10
20
1
2
3
4
10
20
20
1
1
3
3
4
4
5
5
10
10
20
1.5
3
4
5
10
20
1.5
3
4
5
10
30
2
3
4
5
10
30
2
3
4
5
10
40
2
3
4
5
10
recom.
E
7
X + 20
10
X + 22
13
H
Diameter of the fixing bore according to customer’s requirements
D
Recommended dimensions of the grinding wheels are under printed by a darker colour
38
D iamond
C on tac t
s. r. o.
Derived variations:
11V5
11V4
11A2P
11M2
11Q2
11B2
11V2
39
12A2 - 45
50
60
W
min.
2
2
75
2
80
90
2
2
100
2
125
2
130
140
2
2
150
2
160
2
175
3
200
3
250
3
X
recom.
3
3
3
7.5
3
3
3
8
3
8
5
5
5
10
5
5
15
6
15
10
25
5
5
5
10
5
5
5
10
5
10
6
6
6
12
10
8
20
8
20
15
30
6
12
10
10
6
12
6
12
10
10
8
15
15
10
25
10
15
20
35
max.
min.
8
10
1
1
1
1.5
2
2
15
1
2
15
15
1
1
2
2
15
1
20
T
recom.
E
max.
recom.
3
3
5
5
X + 18
7
3
4
7
3
3
4
4
7
7
2
3
4
10
X + 19
10
1
2
3
4
10
20
20
1
1
3
3
4
4
5
5
10
10
20
1.5
3
4
5
10
20
1.5
3
4
5
10
30
2
3
4
5
10
30
2
3
4
5
10
X + 22
13
40
2
3
4
5
10
H
Diameter of the fixing bore according to customer’s requirements
D
Recommended dimensions of the grinding wheels are under printed by a darker colour
40
D iamond
C on tac t
s. r. o.
Derived variations:
12V5 - 45
12V4 - 45
12A2P - 45
12M2 - 45
12Q2 - 45
12B2 - 45
12V2 - 45
12B9 - 45
41
12A2 - 20
50
60
75
80
90
100
115
120
125
130
140
150
160
175
200
250
300
W
min.
2
2
2
2
2
2
2
2
2
2
2
2
2
3
3
3
3
X
recom.
2
2
2
2
2
2
3
3
3
3
3
3
3
3
2
4
3
3
5
5
5
6
6
6
4
5
5
5
6
6
6
6
6
4
3
3
3
3
5
5
5
5
5
3
2
4
4
5
6
5
5
6
6
6
6
10
10
5
5
10
10
10
10
10
10
10
10
10
10
10
10
10
15
15
max.
min.
6
6
12
12
12
20
20
20
25
25
25
25
25
30
30
30
30
1
1
1
1
1
1
1
1
1
1
1
1.5
1.5
2
2
3
3
T
recom.
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
2
2
3
3
2
2
2
2
2
2
2
2
2
2
2
2
2
3
3
4
4
max.
3
3
3
3
3
3
3
3
3
3
3
3
3
4
4
5
5
3
3
5
5
5
6
6
6
6
6
6
6
6
6
6
6
6
recom.
X+8
E
6
X + 11
X + 13
X + 15
X + 17
X + 19
X + 23
X + 26
H
8
9
10
11
12
15
Diameter of the fixing bore
according to customer’s requirements
D
Recommended dimensions of the grinding wheels are under printed by a darker colour
42
D iamond
C on tac t
s. r. o.
Derived variations:
12V5 - 20
12V4 - 20
12A2P - 20
12M2 - 20
12Q2 - 20
12B2 - 20
Angle V ≥ 30°
12V2 - 20
12B9 - 20
Angle V ≥ 30°
43
D
50
60
75
80
90
100
125
130
140
150
160
175
200
250
300
12A9
W
X
min.
recom.
max.
min.
1
1
1.5
1.5
1.5
2
2
2
2
2
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
3
5
5
5
5
5
5
5
5
5
10
10
10
10
10
10
10
10
10
10
3
3
3
3
3
5
5
5
5
5
5
5
5
8
8
recom.
3
3
5
5
5
6
8
8
8
8
8
8
8
10
10
5
5
6
6
6
8
10
10
10
10
10
10
10
15
15
max.
6
6
10
10
10
10
15
15
15
15
15
15
15
20
20
10
10
10
10
10
15
15
15
15
15
15
20
20
20
20
T
E
H
10
25
30
13
35
40
15
Diameter of the fixing bore
according to customer’s requirements
11A9
20
Derived variation:
11B9
Recommended dimensions of the grinding wheels are under printed by a darker colour
44
D iamond
C on tac t
s. r. o.
D
50
60
75
100
125
150
175
200
250
W
X
U
T
min.
recom.
max.
min.
recom.
max.
min.
recom.
max.
5
5
5
5
5
6
8
10
10
6
6
8
10
10
10
15
15
15
10
10
15
15
20
20
30
30
40
1.5
1.5
1.5
2
2
2
2
3
3
2
2
2
3
3
3
3
4
4
3
3
3
4
4
4
4
5
5
5
5
5
5
5
6
8
10
10
6
6
8
8
10
10
10
10
10
8
8
10
10
10
10
10
10
10
recom.
U + 20
U + 22
E
H
7
Diameter of the fixing bore
according to customer’s
requirements
11C9
10
D
50
60
75
100
125
150
175
200
250
W
X
U
T
min.
recom.
max.
min.
recom.
max.
min.
recom.
max.
5
5
5
5
5
6
8
10
10
6
6
8
10
10
10
15
15
15
10
10
15
15
20
20
30
30
40
1.5
1.5
1.5
2
2
2
2
3
3
2
2
2
3
3
3
3
4
4
3
3
3
4
4
4
4
5
5
5
5
5
5
5
6
8
10
10
6
6
8
8
10
10
10
10
10
8
8
10
10
15
20
20
20
20
recom.
U + 18
E
H
7
Diameter of the fixing bore
according to customer’s
requirements
12C9 - 45
U + 19
10
U + 22
45
12C9 - 20
50
60
75
80
100
125
150
175
200
250
300
W
X
U
min.
recom.
max.
min.
recom.
max.
min.
recom.
max.
5
5
5
5
5
5
6
8
10
10
10
6
6
8
8
10
10
10
15
15
15
20
8
8
10
10
15
20
20
30
30
40
40
1.5
1.5
1.5
1.5
2
2
2
2
3
3
3
2
2
2
2
3
3
3
3
3
4
4
3
3
3
4
4
4
4
4
5
5
5
5
5
5
5
5
5
6
8
10
10
10
6
6
8
8
10
10
10
10
15
15
20
8
8
10
10
15
20
20
20
20
20
25
T
E
U+8
6
U + 11
U + 13
U + 15
U + 17
U + 19
U + 23
U + 26
8
9
10
11
12
15
H
Diameter of the fixing bore
according to customer’s requirements
D
Other possible modifications to the bearing body:
13A2
15A2
18A2
Recommended dimensions of the grinding wheels are under printed by a darker colour
46
D iamond
C on tac t
s. r. o.
12R4
D
75
100
125
150
W
2
2
2
2
X
3
3
3
3
2
2
2
2
3
3
3
3
T
E
H
10
5
11
12
6
8
customer’s
requirements
47
11V9
50
55
75
100
125
150
175
200
W
min.
1
1
1
1.5
1.5
1.5
2
2
recom.
1
1
1.5
1.5
1
1.5
1.5
2
2
2
3
2
2
2
3
3
X
max.
3
3
3
4
4
5
5
5
5
5
5
6
6
T
6
6
10
10
10
6
6
6
10
10
10
E
25
15
15
15
15
15
15
30
35
40
50
10
60
13
15
T
E
H
Diameter of the
fixing bore according to
customer’s requirements
D
12V9
50
60
75
100
125
150
175
200
W
min.
1
1
1
1.5
1.5
2
2
2
recom.
1
1
1
1.5
1.5
1.5
1.5
1.5
2
2
2
3
3
X
max.
2
2
2
3
3
3
5
5
5
5
5
5
5
5
6
6
6
6
6
6
6
6
10
10
20
10
10
10
10
15
15
15
15
15
20
20
10
25
35
15
H
Diameter of the fixing bore
according to customer’s
requirements
D
Recommended dimensions of the grinding wheels are under printed by a darker colour
48
D iamond
C on tac t
s. r. o.
Modification of the bearing body for larger fixing bores:
11V9 - D
12V9 - D
Modification of the abrasive section:
12V9 - 5
12V9 - 4
12V9 - F
49
4A2
50
60
75
80
90
100
115
120
125
130
140
150
160
175
200
250
300
W
min.
2
2
2
2
2
2
2
2
2
2
2
2
2
3
3
3
3
X
recom.
2
2
2
2
2
2
3
3
3
3
3
3
3
3
2
4
3
3
5
5
5
6
6
6
4
5
5
5
6
6
6
6
6
4
3
3
3
3
5
5
5
5
5
3
2
4
4
5
6
5
5
6
6
6
10
10
6
5
5
10
10
10
10
10
10
10
10
10
10
10
10
10
15
15
max.
min.
6
6
12
12
12
20
20
20
25
25
25
25
25
30
30
30
30
1
1
1
1
1
1
1
1
1
1
1
1.5
1.5
2
2
3
3
recom.
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
2
2
3
3
2
2
2
2
2
2
2
2
2
2
2
2
2
3
3
4
4
max.
3
3
3
3
3
3
3
3
3
3
3
3
3
4
4
5
5
3
3
5
5
5
5
5
5
5
5
5
6
6
6
6
6
6
T
H
8
10
11
12
16
Diameter of the fixing bore
according to customer’s requirements
D
20
Recommended dimensions of the grinding wheels are under printed by a darker colour
50
D iamond
C on tac t
s. r. o.
Derived variations:
4A2.S
4A2.SO
Recommendation: X max. 3 mm, E = T - X
Recommendation: X max. 3 mm, E = T - X
4A9
4A2P
4M2
4Q2
4B9
51
4B2
W
min.
50
60
75
80
90
100
115
120
125
130
140
150
160
175
200
250
300
2
2
2
2
2
2
2
2
2
2
2
2
2
3
3
3
3
X
recom.
2
2
2
2
2
2
3
3
3
3
3
3
3
3
2
4
5
5
5
3
3
3
2
4
4
5
6
5
4
5
5
5
3
3
3
3
5
5
6
6
6
4
5
5
5
6
6
6
6
6
5
6
6
6
6
10
10
5
5
10
10
10
10
10
10
10
10
10
10
10
10
10
15
15
max.
min.
6
6
12
12
12
20
20
20
25
25
25
25
25
30
30
30
30
1
1
1
1
1
1
1
1
1
1
1
1.5
1.5
2
2
3
3
recom.
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
2
2
3
3
2
2
2
2
2
2
2
2
2
2
2
2
2
3
3
4
4
max.
3
3
3
3
3
3
3
3
3
3
3
3
3
4
4
5
5
3
3
5
5
5
5
5
5
5
5
5
6
6
6
6
6
6
T
H
8
10
11
12
16
Diameter of the fixing bore
according to customer’s requirements
D
20
Comment: E = T - X
Derived variations:
4B2.S
4B2.SO
Recommendation: X max. 3 mm, E = T - X
Recommendation: X max. 3 mm, E = T - X
Recommended dimensions of the grinding wheels are under printed by a darker colour
52
D iamond
C on tac t
s. r. o.
4C9
50
60
75
80
100
125
150
175
200
250
300
W
X
U
T
min.
recom.
max.
min.
recom.
max.
min.
recom.
max.
5
5
5
5
5
5
6
8
10
10
10
6
6
8
8
10
10
10
15
15
15
20
8
8
10
10
15
20
20
30
30
40
40
1.5
1.5
1.5
1.5
2
2
2
2
3
3
3
2
2
2
2
3
3
3
3
3
4
4
3
3
3
4
4
4
4
4
5
5
5
5
5
5
5
5
5
6
8
10
10
10
6
6
8
8
10
10
10
10
15
15
20
8
8
10
10
15
20
20
20
20
20
25
dop.
U+6
U+8
U + 13
U + 17
H
Diameter of the fixing bore
according to customer’s requirements
D
Derived variations:
4C2
53
4V2
min.
recom.
max.
1.5
1.5
2
3
3
3
3
2
2
3
3
4
4
5
5
5
5
6
6
6
8
1.5
1.5
1.5
1.5
1.5
1.5
1.5
2
2
2
2
3
3
3
3
3
3
3
4
4
5
T
E
8
10
11
12
16
V
H
Diameter of the fixing
bore according to customer’s requirements
max.
V ≥ 30°
X
recom.
Recom. angle
50
60
75
100
125
150
175
W
min.
E=T-X
D
Derived variation:
4V2.S
Recommended dimensions of the grinding wheels are under printed by a darker colour
54
D iamond
C on tac t
s. r. o.
4V4
D
75
100
125
150
W
3
3
4
5
5
5
5
6
X
6
6
6
8
10
10
10
10
1
1
1
1.5
2
2
2
2
T
3
3
3
3
11
12
K
H
40
50
75
100
customer’s
requirements
Derived variations:
4B4
4F4
55
3
3
4
5
6
6
6
X
20
30
40
40
40
40
40
2
3
5
T
H
Diameter of the fixing
bore according to customer’s requirements
75
100
125
150
175
200
250
W
customer’s
requirements
D
customer’s
requirements
4V5
Derived variation:
4V5.N
4F5
4CH9
4Y9
Recommended dimensions of the grinding wheels are under printed by a darker colour
56
D iamond
C on tac t
s. r. o.
4BT9
D
W
75
100
125
150
5
5
5
5
X
6
6
6
6
7.5
10
10
10
1
1
1
1
1.5
1.5
1.5
1.5
2
2
2
2
T
J
H
8
40
50
75
100
customer’s
requirements
10
4ET9
50
60
75
80
100
125
150
W
3
4
5
5
5
5
5
5
5
6
6
6
6
6
X
6
6
7.5
8
10
10
10
1
1
1
1
1
1
1
1.5
1.5
1.5
1.5
1.5
1.5
1.5
T
2
2
2
2
2
2
2
6
8
10
H
Diameter of the fixing
bore according to customer’s requirements
D
Derived variations:
4BTF9
4ETF9
57
Hand Lap
Dimensions of the functional layer for the lapping stone – 35 x 10 x 1.5mm
Diamond abrasive – in grain D7 to D126
Bonding compound – resinous RB3D or metallic MB1W.
Applications:
■ Small repairs to the cutting face of cutters made of SK and RO
- removal of partial dulling
- removal of adhered material
- prolonging longevity of tools between sharpening
■ Hand repairs of cutting edges after sharpening
- removal of ‘needle point’
- lapping of facets
- finishing of welding cones
- other
We will manufacture laps in other dimensions after a prior agreement with the customer.
58
D iamond
C on tac t
s. r. o.
Other products as listed in separate catalogues:
■ Diamond and CBN grinding wheels for woodworking industries
■
■
■
■
■
■
Electroplated diamond and CBN grinding wheels
CBN mounted points in vitrious bond
Diamond dressers
Hand diamond needlepoint files
Diamond pastes
Synthetic diamond powder
www.diamondcontact.cz