DAIWA
RABINGrinding is sharply and polishing is softly,that is "DAIWA RABIN".
it is applicable from grinding,polishingand de-burring after processing to finishing.

JQA-QM9770

Daiwa Kasei Kogyo
Co., Ltd

Features of the elastic rubber grinding stone: Daiwa Rabin
Features of the elastic rubber
grinding stone: Daiwa Rabin

Features of the elastic rubber grinding stone: Daiwa Rabin
An ideal grinding stone must "cut", "polish", and "last long"!

Daiwa Rabin is a rubber grinding stone.

Risks Concerning Rubber Elasticity

The expansion of the potential of rubber grinding stones through the rubber design
and the special abrasive grain (*CM type) developed by Daiwa Kasei,
as well as the "rubber elasticity", which is a feature of rubber grinding stones,
has helped receive a high evaluation indicating that "It's 'Daiwa Rabin' that comesto the mind when one says rubber grinding stones".

Features and Usages ofDifferent Material Types

・The most prominent feature of Daiwa Rabin is its
excellent cutting quality that has changed the image
that "rubber grinding stones are for polishing".

D a i wa Ra b i n

・By adjusting the rotation speed and making use of
rubber elasticity, the grinding stone can be made toadapt to curved surfaces, and jumping and chatteringof the work piece caused by hitting can be eliminated.
⇒ It not only removes the processing marks from direct carving of metal
This not only enables proper alignment with the workforging dies, cutting marks on difficult-to-cut materials such as SUS
piece to achieve a stable polishing surface, but enables
and heat resistant alloys, burrs of forged parts such as the crank shaft,polishing with less workload.
and ultra-high hardness, but also processing marks from the grinding
and cutting process to provide a fine polished surface.
⇒ It enables stable bulk processing during de-burring.
⇒ It is best suited for automation, combined with excellent durability andclog resistance.

⇒ Over-cutting and damage can be avoided, and even an operator who
does not possess very high skills can safely perform maintenance of
metal dies, de-burring of important sections of the product, as well as
polishing.

・The rubber elasticity ensures smoothening of polishingmarks, thereby resolving surface roughness andpreventing deep polishing lines from occurring.

D i a m o n d Ra b i n

・Because the binder is of rubber, no dedicated tool anddetailed settings are needed for truing and dressing.
This means that processing and dressing can be
performed easily without too much effort and cost. This
⇒ The need for fine engraving of a mesh is done away with, which leads
proves to be more effective during automation.
to a reduction in the process. Also, the final finishing task becomes

Polishing & Deburring Kit

easier.
⇒ It can also be used safely in turbine blades of aeroplanes and nuclear ・By adjusting the usage conditions, the generation of
power generation, where polishing lines and residual stress is notheat can be controlled to prevent heat damage, and thedesired, in notched parts where stress gets accumulated, and even in
residual stress can also be reduced to a large extent.
sealing surfaces.

・The powder dust can be reduced to a great extent thus
improving the operating environment. Large quantitiesof the grinding fluid are no longer needed, which
contributes to a healthier environment.
⇒ It can be used for continuous polishing, without dressing, during

・Operation can be performed continuously without
having to worry about clogging.

Daiwa Rabin is being usedin various operations

polishing of the casting surface of aluminum die cast exterior parts
that involve high workload, and also during removal of cutting marks ・There is a rich collection of rubber compositions thatfrom aluminum metallic molds and compressor sprawl parts.
have been developed and accumulated over many years,

・By adjusting the usage conditions and making use
of rubber elasticity, excellent cutting quality can be
exhibited, and by using the grinding stone under lessload, the life of the grinding stone can be improved.
If operation is performed in accordance with therequirements for Daiwa Rabin, a longer life than othertools can be expected!

depending on various operations of manufacturing andthe usage purpose.
It is used in various operations due to its compatibility with a wide
range of materials including metal-mold material, rubber, resins, andplastic, soft metals, difficult-to-cut materials such as aluminum and
SUS, brittle material with high hardness, and also different types of
coatings.

Gu id e t o sa fe ty⇒ * Selecting a material that suits the condition of the work piece, andcombining together with the processes of other tools is also important.

*It has been used for a long time in turbine blades of aeroplanes and nuclear power plants,
and important components such as precision valves and superchargers,
indicating that high reliability is also a big feature of Daiwa Rabin.

01

Risks Concerning Rubber Elasticity
Features of the elastic rubber
grinding stone: Daiwa Rabin

Daiwa Rabin is a grinding stone made ofelastic rubber.

Risks Concerning Rubber Elasticity

It has a specific property called "rubber elasticity" that is not seen in other tools.
"Rubber elasticity" is very different from general "elasticity", which is characterized bydeformation according to the load as well as a high amount of deformation.
Therefore, handling the Daiwa Rabin as a general grinding stone and cutting tool can bevery dangerous.
* Example: As compared to the maximum allowable rotation speed of 42,000 r.p.m. of a φ 19 vitrified mounted grinding stone, a φ20 to
25 Daiwa Rabin grinding stone has a maximum allowable rotation speed of 20,000 r.p.m., which is very different.
* Unlike a grinding wheel and cutting tool, increasing the rotation speed beyond the maximum allowable rotation speed is very dangerous
in the case of a rubber grinding stone. Use the grinding stone at a rotation speed lower than the maximum allowable rotation speed.

Features and Usages ofDifferent Material Types
D a i wa Ra b i n
D i a m o n d Ra b i n

Rubber elasticity deformation

Polishing & Deburring Kit● Unlike a grinding wheel, because there is no bubble structure, thepenetration of the adhesive is less and the strength of the bonding
material (rubber) itself is less, which results in "deformation of rubber
elasticity" in response to the load.
Depending on how the load is applied, that is, whether the load causes
the adhesive joint to come off, or results in twisting, stress may get
accumulated in the adhesive joint, causing the shank to fall out. Pay
proper attention to the use of Daiwa Rabin in view of rubber elasticity
deformation.

Daiwa Rabin is being usedin various operations*In order to improve the balance between the shank and the grindingstone size, and the specifications of the shank (stone size and holediameter for a straight grinding stone), which are the basis of stability,
as well as the forming method that is particularly important in thecase of a rubber grinding stone in terms of safety and stability of thegrinding stone performance, revision of standards and specifications,and improvements in metal molds, specifications of the shank, andthe manufacturing method are in progress.

Gu id e t o sa fe ty● Because the amount of deformation also increases depending on theload, there is a possibility of damage due to deformation even when
the grinding stone is used at a rotation speed below the maximum
allowable rotation speed.
* The maximum allowable rotation speed does not guarantee safety.
● A large amount of deformation may result from the sudden applicationof load. Take special caution when starting the equipment.
● Depending on the rotation speed, vibrations in the machine tools
suddenly increase the vibration in the grinding stone. Always use thegrinding stone with inspected and maintained machine tools.
● Use a tool in accordance with the condition of the work piece.
For grinding purposes, use a general wheel. Unnecessary use of
Daiwa Rabin must be avoided.
Pressing the grinding stone too forcefully will generate a large
amount of heat. If the cutting strength is insufficient, try changing
the material of the grinding stone.
You can easily contact Daiwa Kasei and request for a test sample.
● Besides too much pressing force, if the grinding stone is continuously
in contact with a wide contact surface, a large amount of heat will be
generated, and the strength of the rubber might decline due to theheat.
Change the specifications and usage method of the grinding stone,
and also examine the use of a coolant.

In order to enable you to use Daiwa Rabin, which has a specific property
called rubber elasticity, without any concerns, we can provide you withproduct specifications depending on your specific purpose of use. Feelfree to contact us in this regard.

02

Features and Usages of Different Material Types
Features of the elastic rubber
grinding stone: Daiwa Rabin

CM Type
The CM type has a special abrasive grain developed
in-house and also an original rubber composition,
which enable it to exhibit excellent cutting quality thatis unique to Daiwa Rabin.

Risks Concerning Rubber Elasticity

It is a long-selling type that represents "Daiwa Rabin" notonly because of its unique elasticity (softness), but also
because of its design that perfectly balances the cutting
quality, polished surface, and durability, and its use invarious operations involving different types of materials.

WA60

WA80

WA120

WA180

WA220

WA320

Features and Usages ofDifferent Material Types

・It can remove the processing marks left from direct end-mill carving of metal forging dies, as well as cutting marks on FCD 600 class, SUS, andheat resistant alloys.
Processes like heat treatment, carburizing, and nitriding are also not difficult to perform even with high hardness (HRC60 level).
・Due to its unique elasticity, it can be aligned with the work piece, which prevents jumping and chattering of the work piece caused by hitting. It
can thus be used with ease and can also lessen the workload.
・As a result of the cutting quality and rubber elasticity, the stubborn aluminum and mold wash adhering on to the aluminum die cast molds canbe removed without causing scratches on the surface of the mold, or being concerned about surface roughness or over-cutting, and therefore,
hassle-free maintenance task can be performed.
・Surface polishing of aluminum die cast products (removing wrinkles and bubbles from the casting surface, sink marks, pinhole correction, andparting line), removal of cutting marks from aluminum and other soft metals, and removal of processing marks from aluminum mass-production
products can be performed without worrying about clogging, thus improving the mass-production effect.
* This clog resistance property proves to be very effective during automation at the time of machining and on the CNC lathe.
・For plated products, the material can be finely adjusted to prevent scratches, and the best suited surface finish can be selected for the plating.

D a i wa Ra b i n

OX TypeResolving surface roughness: For your "polishing" work, you may
use the OX type that offers a wide range of grain sizes.

D i a m o n d Ra b i n

Although this type is used mainly for polishing, from the viewpoint of work piece material having
high hardness and different surface conditions, and also in view of durability even in the case of thepolishing process, a reasonably tough rubber design has been adopted.

Polishing & Deburring Kit

・It can also be used for edge honing of carbide cutting tools, and removal of fine burrs from various materials.
・It is also used widely for removing burn marks, scales, rust, scratches, dents, and chuck marks from resin dies, and depositions on the surface
of press and forming dies, and also with electrodes of copper, tungsten, and SUS, and in other maintenance tasks.
・It is also used for removing paint, plating, and coating, as well as tarnish from the glass surface through the adjustment of the rubber material
such that the backing is not damaged, and thus scratches can be prevented from occurring.
*As a special use, this type has been used for long in the hairline processing of clock parts and SUS thin boards in home appliances for
improving the yield and providing stable and continuous processing.

Daiwa Rabin is being usedin various operations

UN Type
For the de-burring process, the rubber is hardened to prevent theburrs and edges from eating into the rubber.
See▶

Daiwa Rabin is ideal for de-burring

Gu id e t o sa fe ty

・From the viewpoint of the shape, the design helps control deformation of the rubber, and continuous processing can be performed while
maintaining the shape of the stone and preventing damage to the shape of the work piece.
・We provide products that can simultaneously perform de-burring and lap polishing on fine burrs formed on parts possessing importantfunctions in precision components.
・Because of excellent durability of Daiwa Rabin and a design that proves to be strong against burrs, it is also used in the de-burring process at
the time of machining and on the CNC lathe.

Diamond Rabin
03

See▶

p.09

Daiwa Rabin

Mounted Points with 3-mm Shank
ShanklengthMaximum allowablerotation speed (r.p.m.)

Grain size

4-13-3(L=30)

30,00080,120,180,220,320/400,600
80,120,180,220

5-15-3(L=30)

30,0006-17-3(L=30)

30,00080,120,180,220,320/400,600

8-20-3(L=30)

30,00080,120,180,220,320/400,600

10-20-3(L=30)

30,00080,120,180,220,320/400,600

13-20-3(L=30)

20,00080,120,180,220

Φ4
13

L=30

Φ10

Mounted Points with 6-mm Shank
ShanklengthMaximum allowablerotation speed (r.p.m.)

20

Grain size

10-20-6(L=40)

20,00080,120,180,220,320/400

15-25-6(L=35)

20,00080,120,180,220,320/400

20-25-6(L=35)

20,00080,120,180,220,320/400

25-25-6(L=35)

20,00080,120,180,220,320/400

Features and Usages ofDifferent Material Types

Size
Outer diameter-Length-Shank diameter

Risks Concerning Rubber Elasticity

Size
Outer diameter-Length-Shank diameterFeatures of the elastic rubber
grinding stone: Daiwa Rabin

Daiwa Rabin Mounted Points Grain sizes; 80 to 320; CM Type / 320 to 600; OX Type

40

Size
Outer diameter-Length-Shank diameter4-13-38-20-3L=60

20,00080

15,000100

12,00050

20,00060

20,00080

15,000100

12,00050

20,00060

20,00080

12,00050

20,00060

15,00080

10,000Grain size
13
80,120,180,220L=Φ4

80,120,180,220

80,120,180,220

Polishing & Deburring Kit

10-20-3

Maximum allowablerotation speed (r.p.m.)

D i a m o n d Ra b i n

6-17-3ShanklengthD a i wa Ra b i n

Mounted Points with 3-mm Shank (Long Shank)

80,120,180,220*Threaded type with long shank4-11(threaded)
5-12(threaded)

L=50,60,70,80

80,120,220

6-13(threaded)

Daiwa Rabin is being usedin various operations

Mounted Points with 6-mm Shank (Long Shank)
Size
Outer diameter-Length-Shank diameter
10-20-6

20-25-6

Maximum allowablerotation speed (r.p.m.)

L=60

18,00080

15,000100

12,000L=60

15,00080

12,000100

10,000L=60

15,00080

10,000Grain size

80,120,180,220

80,120,180,220

Gu id e t o sa fe ty

15-20-6

Shanklength80,120,180,220

The inventory is limited in terms of size and material. We are ready to manufacture with various materials according to the application.

04

Features of the elastic rubber
grinding stone: Daiwa Rabin

Daiwa Rabin is Ideal for De-burring of Specific Areas!

Risks Concerning Rubber Elasticity"E nsur ing absence of bur rs!"

De-burring can be performed by various methods and tools, including files, brushes, grinding stones,
paper tools, special cutting tools for deburring, cutters, knives, barrels,
blast-shot, water-jet, specially-shaped tools, gel (special device), chemicals, heat, and electrolysis, andat the same time, processing methods that do not give rise to burrs are also being researched, however,each of these have certain limitations

Features and Usages ofDifferent Material Types

and issues, which pose a big problem during manufacturing.

Daiwa Rabin is ideal for performing a stable mass-production
de-burring process without involving too much efforts or cost.

D a i wa Ra b i n● No need to be concerned over secondary burrs. Daiwa Rabin also prevents any burrs fromremaining behind or over-cutting of the material.
● Mass production performance … This is an excellent performance of Daiwa Rabin, which ismost different from what can be expected from a rubber grinding stone.
This is a feature that is unique to Daiwa Rabin that is also widely used in removing cutting marks frommetal dies with a high hardness, cutting burrs from forged products, and even cutting marks fromdifficult-to-cut materials such as SUS and nickel alloys.
● Continuous operation can be performed without being concerned about clogging even in thecase of soft metals such as aluminum.
● There is no problem such as chattering, clogging, widening or falling out of the brush, wearout of the edge of the blade, or a problem with the built-up edge,
which are commonly seen with grinding wheels, and therefore, not much efforts are needed
for tool management.
● There is no need to make detailed settings with a dedicated dresser in the truing process,which means that dressing can also be performed easily in a short period of time,
without having to stop the workflow.
● Because the polishing powder is made into a very fine abrasive powder, the concern oversudden scratches occurring from faceting can be reduced.
* The reason that the state of the polishing powder and the facet is different from that in grinding
wheels and cutting tools is that the mechanism of rubber elasticity has a different aspect ascompared to these tools.
* Proper care must be taken when there is too much variation in the processing state.
● Because Daiwa Rabin need not be used at a high speed and the cutting quality is also good,heat generation can be controlled to a large extent, thus preventing damage caused by heat.
● We manufacture various shapes and sizes of grinding stones in accordance with areas thatare hard to process and limitations of the equipment used.
* We can provide the specifications that will best suit your needs depending on the limitations of thework areas and equipment
in order for you to achieve automation and save power during machining and on the NC lathe, andother metal-cutting machine tools and dedicated machines.

D i a m o n d Ra b i n
Polishing & Deburring Kit
Daiwa Rabin is being usedin various operations
Gu id e t o sa fe ty

05

Features of the elastic rubber
grinding stone: Daiwa Rabin

Grinding stones for de-burring, edge processing (rounded),and profile processed-surface polishing
Straight
Shank length

Maximum allowablerotation speed (r.p.m.)

4-13-3(L=30)

30,000#120(UN)

5-15-3(L=30)

30,000#120(UN)

6-17-3(L=30)

30,000#120(UN)

8-20-3(L=30)

30,000#120(UN)

10-20-3(L=30)

30,000#120(UN)

13-20-3(L=30)

20,000#120(UN)

Risks Concerning Rubber Elasticity

Size
Outer diameter-Length-Shank diameter

Grain size

Features and Usages ofDifferent Material Types

Spherical
Maximum allowablerotation speed (r.p.m.)

Grain size

5d-3

(Total length=43)

30,000#120(UN)/#120(CM)6d-3(Total length=44)30,000#120(UN)/#120(CM)8d-3(Total length=44)30,000#120(UN)/#120(CM)10d-3(Total length=46)30,000#120(UN)/#120(CM)13d-3(Total length=46)

20,000#120(UN)/#120(CM)20d-6(Total length=59)

20,000#120(UN)

25d-6(Total length=62)

20,000#120(UN)D i a m o n d Ra b i n

Shank length

D a i wa Ra b i n

Size
Outer diameter-Shank diameter

Maximum allowablerotation speed (r.p.m.)

20-3-320,000#120,22025-3-318,000#120,180

30-6-615,000#12040-10-6

10,000#120

Grain size

30

30
3

3

Φ25

Φ20
35

Daiwa Rabin is being usedin various operations

Size
Outer diameter-Length-Shank diameter

Polishing & Deburring Kit

Shape B (with a navel)

35
10

6
Φ30

Φ40

Gu id e t o sa fe ty* Simple dressing recommended
06

Features of the elastic rubber
grinding stone: Daiwa Rabin

Grinding stones for narrow and minute areas
Small-dia. spherical type For cross burrs and fine burrs in minute areas
Maximum allowablerotation speed (r.p.m.)

Size
Outer diameter-Length-Shank diameter

Risks Concerning Rubber Elasticity

50,000* Slim neckGrain size

Φ2

120

2d-3
* Normal neck50,000120* Slim neck50,000120* Normal neck50,000

120

20

40

Φ2
40
Φ3

Features and Usages ofDifferent Material Types

20

3d-3

40

Φ3
40

D a i wa Ra b i n

Small-dia. straight typeD i a mo n d Ra b i n

Size
Outer diameter-Length-Shank diameter

Maximum allowablerotation speed (r.p.m.)

1-5-3

50,000120,220,320

Φ1

2-5-3

80,00080,120,180,220,320

Φ2Grain size

3-8-3*

50,00080,120,180,220,320(3-13-3)

20,000* For de-burring (120)

Polishing & Deburring Kit

50,000

42
5

8

45

Φ3
34
* This RABIN has black colored rubberskin around.
Please do not forget to remove thatrubber skin with dresser before using.

* One-touch Rabin
3-7-1.6

5

80,120,180,320

With the holder chucked in the grinder,
you can easily change only the grinding stone at the tip.

Daiwa Rabin is being usedin various operations

For air grinders Rapid Rabin
Maximum allowable rotation speed (r.p.m.) 50000

G ui de to safe ty

Size
Outer diameter-Length-Shank diameter07

Grain size

4-13-3#80,120,180,220

6-16-3#80,120,180,220

8-17-3#80,120,180,220

10-17-3#80,120,180,220

WA80

WA120

WA180

WA220

* We can receive orders and manufacture grinding stones according to thematerial of the work piece, operation details, and special requirements.
Features of the elastic rubber
grinding stone: Daiwa Rabin

Wheel
Size Outer diameter (D) - Thickness (T) - Hole diameter (H) Maximum allowable rotation speed (r.p.m.)

18-3-1.8

15,00020-2-1.8

18,00025-1.5-1.8

15,00025-2-1.8

15,00025-3-1.8

15,00030-3-1.8

15,00040-4-3

12,00050-6-69,000

50-10-6

9,000

75-3-66,000

90-3-9.53

5,500

100-10-6,12.7

4,500

100-13-12.7,15.88

4,500*φ50 onwards
Using a device with a safety
cover is indispensable for usinga grinding stone.

D i a mo n d Ra b i n

Square bar* φ150 onwards
The material and size shall beselected depending on therotation speed of the equipmentused and the purpose of use.

D a i wa Ra b i n

18,000Features and Usages ofDifferent Material Types

22,00015-2-1.8

Risks Concerning Rubber Elasticity

15-1-1.8

Round barSize
Φ-L

5-5-100

Φ 2.35-120

5-10-100

3-120

10-10-100

5-120

10-15-100

6-150

20-25-100

Polishing & Deburring Kit

Size
T-W-L

8-150
10-150Daiwa Rabin is being usedin various operations

20-15025-150We are ready to manufacture with various materials according to the application.

Sheet thickness
1.5mm

200sq.

G ui de to safe ty

Square sheet
You can process it into a flat shape for use.
The abrasive grains do not protrude out like insand paper.
08

Diamond Rabin
Features of the elastic rubber
grinding stone: Daiwa Rabin

Diamond Rabin is the result of an ideal combination of excellent rubber features of
Daiwa Rabin and a diamond abrasive grain,
which offers much greater performance and improves the processing as a
new diamond tool that was not seen until now.

Risks Concerning Rubber Elasticity

While "high-speed grinding" and "high-speed milling" have evolved remarkably as processing methods for improving the
product quality and increasing the mass production performance, it is necessary to simultaneously increase the rigidity andprecision (.... increase in cost) of tools and usage equipment, select tools and manage their status, and seek refinement in truingand dressing processes, as well as the drive programs.
There are also inevitable problems such as heat generation, and other problems of processing damage, and occurrence of burrs
due to difficulty in processing as a result of a minute size.
The grinding and polishing processes that make use of rubber elasticity have opened the path to an approach that is different
from the high-speed technique, and have greatly reduced the problems and the cost factor accompanying high speed, which
has made the superiority of Diamond Rabin stand out.

Features and Usages ofDifferent Material Types"Rubber elasticity" is a feature of this tool・There is no need to take measures against the large amount of heat generated during high-speed grinding and cutting.
・The residual stress and heat damage are reduced to a great extent, and as a result, micro-cracks can be prevented.
・Because Diamond Rabin exhibits excellent cutting quality even at medium and low speeds, there isn't too much need forhigh rigidity and high precision of devices and tools used for high-speed rotation, which reduces the special additional

D a i wa Ra b i n

cost for metal cutting machine tools.
・The excellent durability that Daiwa Rabin possesses is further improved thus increasing the life as compared to other tools.
・Large quantities of grinding fluid are not needed, and in some cases, semi-dry or dry processing is also possible.
・The grinding and cutting mechanism of a rubber stone is different from that of a grinding wheel and cutting tools, andductile breaking may be expected to be a failure mode. An improvement in the surface finish is naturally expected, but at
the same time, the concern over scratches from the polishing powder are also reduced. The cost involved can be reduced

D i a mo n d Ra b i nthrough the stability of quality and improvement in the yield.
・A dedicated dresser is not needed for truing or dressing. The dressing interval is also long, which reduces the cost of tool
management.
・Another interesting point is that non-suitability to ferrous materials is rarely seen because of which a CBN wheel is notneeded.
* These features can be expected when the ideal grinding stone material is selected and the usage conditions are set in

Polishing & Deburring Kit

accordance with the work piece. The amount of efforts needed for the process can also be reduced to a large extent.
* Diamond Rabin is also opening the path to automatic mirror polishing of aspherical areas as well as automation of mirror
polishing of plastic molds, which has long been sought after, only by mounting a holder having a low-pressure and an
eccentric mechanism on to the present unit.

Daiwa Rabin is being usedin various operations

Mounted Points
Size
Maximum allowable
Outer diameter-Length-Shank diameter rotation speed (r.p.m.)

Grain size

2-5-3

80,000320,600,1000,3000

4-13-330,000320,600,1000,3000

G ui de to safe ty

5-15-330,000320,600,1000,3000

6-17-330,000320,600,1000,3000

8-20-330,000320,600,1000,3000

10-20-3

30,000320,600,1000,3000

We are ready to manufacture grinding stones according to the
sharp of grinding part in the work material and the device.

09

Size

100-7-15

Maximum allowable rotation speed

13,000 r.p.m.

Grain sizes

60,80,120,180,220,320

Features of the elastic rubber
grinding stone: Daiwa Rabin

Rabin Offset
Φ15
7
100

Risks Concerning Rubber Elasticity

・In the canning and sheet metal fields, which require several processes and also involvea difficult-to-perform final buffed mirror finishing process, if Daiwa Rabin Offset is used
after removing the hardness with a belt sander and resinoid, the processing marks

WA60

can be removed and a fine surface finish without any deep scratches can be obtained,
because of which the process of removing polishing marks is no longer needed, andneeded, finish polishing can also be performed.

Features and Usages ofDifferent Material Types

the workload of the final buff polishing can be reduced. If a deep glossy surface is not

WA80*Because the Rabin Offset is based on the CM-type Daiwa Rabin, it has excellent
cutting quality and durability.
・Besides polishing for removal of the processing marks after bead cutting, it can beused directly in nuggets having a thin spot welding.

WA120

・It can also be used for de-burring of edges after punching or on a laser cut surface.
・By reducing the rotation speed, the elasticity of rubber can be put to use, the contact

D a i wa Ra b i n

can be softened, and burns can also be prevented.
・Due to excellent cutting quality and durability, besides sheet metals, you can try Rabin

WA180

Offset for de-burring in gear grinding and rounding the edges of large dies, and also
for build up welded parts for repair.
・By performing operation at a low speed to prevent the generation of heat, it can also

D i a mo n d Ra b i n

be used for edge processing of flat drawn sheet glass.

WA220* Always be sure to take safety measures for a possible problem or damage.
* Although you can use Rabin Offset with a normal 13,000-r.p.m. grinder, werecommend using it with low-speed grinders. This will not only improve thepolishing surface, but also increase the abrasion resistance.

WA320
Polishing & Deburring Kit

IT CupFit Disk
30 X 11 X 6.3(M7)Size

30-2-10 *Double-sided tape type

Maximum allowable rotation speed

23,000 r.p.m.

Maximum allowable rotation speed

Dedicated rubber pad 3-mm shank

Grain sizes

60,80,120,180,220,320

Grain sizes

80,120Daiwa Rabin is being usedin various operations

Size

M7×0.75
11

G ui de to safe ty

30* Dedicated use with
angle grinders

10Polishing & Deburring Kit
Features of the elastic rubber
grinding stone: Daiwa Rabin

A variety kit that includes CM, OX, and Diamond types.

Features

Risks Concerning Rubber Elasticity"CM Type" #80 / #120 / #220
・A long-selling type that is suitable for the general materials as well as Aluminum, SUS and nickel alloy. Grinding is sharply
and polishing is softly.
・Prevents secondary burrs and brings effective work.

"OX Type" #320

Features and Usages ofDifferent Material Types

・Suitable for polishing work.

*More efficient using with CM Type.

・Also suitable for surface finishing without causing scratches.

"Diamond Type" #1000/ #3000
・Suitable for mirror finishing especially on SUS, carbide and material for hardening.
・No need of post-processing like Diamond paste.
・Both wet and dry processing are possible.

D a i wa Ra b i nContents
WA80

D i a m o n d Ra b i n
Polishing & Deburring Kit

CM55 5-15-3

2

WA120 CM55 5-15-3

2

WA220 CM55 5-15-3

2

WA320 OX44

5-15-3

2

D1000

OX66

4-13-3

1

D3000

OX66s 4-13-3

1

Daiwa Rabin is being usedin various operations
G ui de to sa fe ty● Other varieties of kit are coming up soon.

11Daiwa Rabin is being used in various operations
Features of the elastic rubber
grinding stone: Daiwa Rabin

Daiwa Rabin is being used in various operations across a wide-range of "manufacturing" fields.
We understand that you may be using a wide-range of materials, and to match their different
processing conditions and requirements, we manufacture various types of products.
(This catalog lists only the products that are used more frequently.)[Metal molds and molding]:

Risks Concerning Rubber Elasticity

Daiwa Rabin is also used in the manufacturing process, molding, and maintenance of metal molds and mold components"Daiwa Rabin" is known as a rubber grinding stone for polishing of metal molds. "It can be used regardless of thetype and material of the metal mold"* Forging, aluminum die casting, press fine blanking, forming, extrusion, plastic molds, glass, rubber, powder metallurgy, MIM* It can be used with general metals as well as SUS and super-hard materials, and is not affected negatively by clogging ofaluminum and brass, and heat-treated high hardness materials.

Features and Usages ofDifferent Material Types

Also used for removal of the hardened layer in die milling electric discharge machining and scale removal in wire cutting,removal of processing marks during machining or on the grinding machine, scale removal during heat treatment, and also for "polishing", including mirror
finishing of some parts,
as well as polishing before and after flame spraying and coating.

* Also used for polishing of molded parts, such as polishing of the casting surface of aluminum die casts, and correction ofmolding burrs, scratches, and chuck marks.
* Also in removal of adhering substances (*), mending and repair of burns, heat cracks, chipping, and breakages, andmaintenance task for correction of depositions, rusting, and scratches.
We adjust the material of the grinding stone in accordance with the condition of the work piece and requirements of the processing surface.
* Even stubborn substances such as the aluminum and mold wash of aluminum die cast molds can be removed easily without damaging the mold.

"* De-burring" [Machining] See▶ p.05

D a i wa Ra b i n* The performance of Daiwa Rabin is being put to use in the de-burring process that involves certain efforts and cost.
* We can provide details of sizes and shapes in accordance with the operation area or limitations of the equipment and tools used.

"Edge processing and edge honing of cutting tools and blades"
Rubber elasticity helps round up edges. When the requirements of the edge quality are not high, then as the final process important for the performanceof the product, Daiwa Rabin can also be used in edge honing, which requires the setting of the operation method and detailed usage conditions.

"Sheet metals and canning" [Welding, die molding, press fine blanking, forming, laser processing, "polishing"]
D i a mo n d Ra b i n* Daiwa Rabin is used in various operations such as removal of processing burrs, molding scratches, burns, and depositions,as well as polishing.

Polishing & Deburring Kit

If Daiwa Rabin is used after the rough processing, the process time is saved, and the workload of mirror finishing is reduced.
If a high level of mirrored finish is not desired, Daiwa Rabin can also be used for finishing.
Used for finishing of the welded bead cut. Daiwa Rabin can be used as is in a spot-welded nugget.
Also used for back burns and sputter removal.
Press and cutting burrs (thin materials).
Also for curves and correction of scratches from forming.
* We can also provide details on sizes and shapes to match difficult-to-process joints ad corner pockets, or specifications matching your tools.

[Flame spray, coating / surface treatment / plating, painting]* Also used for flame spraying and coating of products and die components, specially super hardening and ceramic spraying
where a lot of efforts are required for polishing.
* Prevents improper backing finish during polishing before plating or painting, and can adjust the polished surface to the ideal
adhesive strength.

Daiwa Rabin is being usedin various operations* The process of removal of substances adhering to the surface is best performed by a rubber grinding stone* Can efficiently remove the stubborn aluminum and mold wash adhering on to aluminum die cast dies without damaging thesurface of the die.
* Also in the process of removal of plating, paint-peeling and galvanized steel plates, alumite, coating, and sprayed surface.
We also offer adjustment of the material in fine processes such as removal of dirt from soft metals and glass surfaces.

* Hairline processing
Also known by another beautiful word like "Star line processing". Used in components of clock and thin-sheet SUS of digital home appliances.

G ui de to sa fe ty* Helps achieve a form according to the design, controls scratches, and adjusts products for which stable mass production
processing can be performed.
* Also for polishing in order to perform inspection.
We provide products for automotive glass inspection, and for inspection equipment such as devices for steel plate inspection.
Can also be used in polishing for inspection of the state of a structure, and polishing for mounting of inspection equipment.

We also use dedicated products for other special individual purposes. Feel free to contact us in this regard.

12

Features of the elastic rubber
grinding stone: Daiwa Rabin

In order to select the ideal product for your work
you may go for actual testing of the product for fast and accurate selection!
We can provide you with a test sample. You may contact us on phone.
Daiwa Rabin is an "elastic rubber grinding stone" in which rubber is used as the binding material.

Risks Concerning Rubber Elasticity

It is difficult to identify a product from the work piece and requirements, and there may be several products used for thesame process.
In the case of a grinding wheel, the abrasive grain is selected based on the material to be cut, however, this method is
not applicable to Daiwa Rabin.
Example: For aluminum, the C-series abrasive grain is selected in the case of a grinding wheel, but in the case of
Daiwa Rabin, there are several abrasive grains such as WA, A, GC, and Ｃ.
As Daiwa Rabin is an elastic grinding stone, it can be easily affected by the various different states of the work piece,
because of which anticipation may be difficult in some cases.

Features and Usages ofDifferent Material Types

Please inform us in brief about the material of the work piece, operation details (such as removal of processing
marks and burrs, or maintenance, etc.), and the desired grinding stone size.
We will provide details on products that can be tested and can be provided in a short period of time.
Try it out!
1. First of all, perform the basic task of confirming the grain size of the grinding stone (surface alignment)

D a i wa Ra b i n

In the case of a rubber grinding stone, the selection of the grain size may turn out to be a risky task.
Before considering the grain size from the surface hardness, it is important to confirm the grain size in accordance with the condition of the work piece.
Using a grain size that is too small would take up a lot of time, and due to the exertion of too much load, the wear-out of the grinding stone might
increase.

2. "Cutting quality", "Polishing surface", and "Life of the grinding stone" are all inter-related
In addition, you can confirm the ease of fitting into the work piece, and the absence of occurrence of burns and clogging.
Since the requested sample might not be the answer to your requirements, in most cases, we ask you to evaluate the samples, so you canselect the most suitable stone material.
We will select the grinding stone material (rubber features) based on a frank evaluation and in response to your requirements.

D i a m o n d Ra b i n

3. Once the standard of the grinding stone material has been estimated, we will also examine the formal test sample for you.
You can also evaluate the life of the grinding stone.

* If the ideal grinding stone for your operation can be provided, it will exhibit a high cost performance over a long periodof time.
・When performing the test, also confirm how to handle Daiwa Rabin: rubber elasticity.

Polishing & Deburring Kit

Daiwa Rabin, which is characterized by its "rubber elasticity", is different from grinding wheels and cutting tools for which
the maximum allowable rotation speed can be considered as a recommended condition. It is difficult to provide therecommended conditions for Daiwa Rabin.
・If you can give some time to selecting the grinding stone to be used by trying out different conditions and lowering therotation speed and load, in addition to a stable polished surface and operation, the life of the grinding stone can beincreased.

Daiwa Rabin is being usedin various operations

It is not rare to spot examples where the life of the grinding stone has increased a few number of times only by changing
the usage conditions. With features like rubber elasticity and the ability to be deformed according to the load, setting offavorable conditions acts like the main point that increases the performance of Daiwa Rabin.
・You can confirm the excellent cutting quality that is unique to Daiwa Rabin and also the fact that the contact becomes soft
as a result of adjustment of the rotation speed, and you can also note that because no dedicated dresser is needed, profile
processing can be performed easily, and extra efforts for dressing are not required.

The product is made of cerium oxide carefully selected for the polishing of glass mirror
Gu id e t o sa fe ty

surface and bound by specially blended rubber.
Other types of

DAIWA RABIN

are available for intermedium processing.We are developing

blending balances of quartz glass and other glasses.

13

Guide to safety
Features of the elastic rubber
grinding stone: Daiwa Rabin

DAIWA RABIN" is an elastic rubberized grinding stone.
WARNING
Operate your devices at the speed less than the maximum r.p.m.

Risks Concerning Rubber Elasticity(The maximum r.p.m. will be found on the package box, enclosed product description label (red) or posted seal.)● In general, the "DAIWA RABIN" products are heavier than elastic grinding stones of other types with an
exception of Type AF. Pay attention to the maximum r.p.m., in particular, when .using a DAIWA RABIN"
as a substitute.
● Even when a DAlWA RABlN"is used within the maximum rp.m.,it may be bent and damaged if pressed
too hard.

Features and Usages ofDifferent Material Types● Uneven wear or a degree of wear may cause the grinding stone to be damaged.
Since the product suffers uneven wear, it will become run out more because of elasticity than grindingstones of other types. Stop using and put it to the adjustment.
● Turn it at a low speed and nothing is wrong, including run out, before put it into operation.
● Take a safe position or orient the grinding stone to a safety position when starting using a tool or device.
● The grinding stone has rubber elasticity, and take care not to apply a sudden load to it.

D a i wa Ra b i n● It may be damaged or cause an accident because overheat reduces rubber strength when the grindingstone has a large contact area, is applied a heavy load or used continuously. Let it be radiated andcooled.
● Ultra-violet rays deteriorate the grinding stone. Don't expose it to the sun when it is stocked.

D i a m o n d Ra b i n● Putting on safety glasses, a safety helmet and gloves is indispensable for using a grinding stone.

On top of the above, observe such instructions on using andstocking grinding stone as given below.

Polishing & Deburring Kit● Use a grinder and any other devices which are well checked and maintenance.
Use a specific covers for grinding stone.
● Fit your grinder and any other devices with a grinding stone in a proper and sure manner.
Take care not to tighten the fiange of a wheel type grinding stone too much.
● DAIWA RABIN" grinding stones generate less dust than grinding stones of other types, but never fail toput on a dust protective mask. (The operator may suffer from a respiratory disease.)

Daiwa Rabin is being usedin various operations● Sparks may set dust on fire. Take proper measures to remove dust and prevent sparking.
● Observe the basic instructions on stocking: Do not stock any grinding stone as it is left bent; Do not
immerse it in water; Do not stock it in a highly humid place for a long period of time; Do not expose it to
the direct sun; When unpacked, the grinding stone must be wrapped in a vinyl bag.

Gu id e t o sa fe ty

When subdividing grinding stones, show the operator the maximum
r.p.m., hand in him such a guide book to safety attached to the product,
and tell him to start using after being familiarized with how to use.
MADE IN JAPAN
14

Daiwa Kasei Kogyo Co., Ltd
2-1-8 Inari, Souka-shi,Saitama-ken
340-0003 JAPANTEL. +81-48-936-8684

FAX. +81-48-936-8655

URL：https://www.daiwa-rabin.co.jp
E-mail:gomu-toishi@daiwa-rabin.co.jp* The specification and externals might change forthe improvement without a previous notice.

2019 Sixth Edition 1K