FBB Grinding Wheels,

made from PolyVinyl Alcohol and

thermosetting resins. Its elasticity effect ”

enables to produce good surface
roughness. It is suitable for precision
instrument grinding.

Major Applications:

various rods, pins, bearings and blades

Part for lapping	Rods & pins	Bearings	Steel cutting rules

Wheel specifications & Dimension table

Cautions for operation

1. Do not use beyond the maximum peripheral speed (m/s) indicated on each
   wheel or inspection card.
2. Check all wheels before tightening, and do not use the wheel that has
   cracking, fractures or chipping.
3. Recommended flange tightening method and pressure:

• When mounting flange on the FBB Grinding Wheel, tighten flange bolts
  with a standard hexagon wrench.

* Excessive tightening weaken the wheel rotational strength.

*Do not hammer the hexagon wrench to tighten nor connect a pipe to
hexagon wrench.

• When tightening down the flange bolts with a torque wrench, tightening
  torque is calculated as below:

MQ (tightening torque) = Q^^9xdxAf MQ: proper tightening torque (N-m)
d : bolt diameter (cm)

Af : flange contact area (erf)
n : number of bolts

4. Coolant: designed for wet grinding, water-soluble type is recommended.
5. Do not leave the wheels in any place where it will be subjected to direct
   sunlight or high-temperature and humidity.
6. Addition to the above cautions, always handle, store, and use wheels in a
   careful manner according to A.N.S.I. Safety Code B7.1

Features

JWP Grinding Stones, made from Polyvinyl Alcohol and much characterized by its sponge type structure. And designed for using with water or water soluble coolant.

FBB Grinding Stones and Wheels, made from Polyvinyl Alcohol and thermosetting resins. And designed for using with water or water soluble coolant.

Major Applications

JWP Grinding Stones, aluminium substrates and spacer rings for computer HDD, watch dials, aluminium pressure plates for camera.

FBB Grinding Stones and Wheels, stainless steel spacer rings for computer HDD, engine parts of automobile made from clad steel (aluminium, copper and steel), electronic parts made from various alloy (aluminium, nickel, cobalt, copper etc.)

Specifications

Hardness Comparison Table

JWP Grinding Stones

FBB Grinding Stones (soft type)

FBB Grinding Stones (hard type)

Features

Made from PVA synthetic fibers developed by our spinning technology and bonded with soft type resins. Abrasive grains are tightly bound inside of PVA fibers. For its flexibility, it is suitable to grind curved surface.

Major Applications

Cylindrical parts such as rods, shafts for 4-wheel vehicles, front fork pipes for motorcycles and stainless steel products

Specifications

Features

ITO BUFF Flapped Wheels made from PVA synthetic fibers developed by our spinning technology. Abrasive grains are tightly bound inside of PVA fibers. It is suitable for finishing of curved surfaces with its flexibility owing to flap type structure

Major Applications

watch cases, titanium frames of glasses, hydraulic cylinders before and after plating

Specifications

Features

UB Grinding Wheels For Centerless Grinder made from PVA synthetic fibers developed by our spinning technology and bonded with thermosetting resins. Abrasive grains are tightly bound inside of PVA fibers. Its elasticity effect offers smooth and continuous grinding without scratches and heat generation

Major Applications

Cylindrical parts, such as rods or shafts for 4-wheel vehicles and front fork pipes for motorcycles

Specifications

Features

UB Grinding Wheels made from PVA synthetic fibers developed by our spinning technology and bonded with thermosetting resins.
Abrasive grains are tightly bound inside of PVA fibers. Its elasticity effect offers smooth and continuous grinding without scratches and heat generation.

Major Applications

Motorcycle rims, watch cases and bands, deburring various weldments

Specifications

Straight Type

Mouned Point Type

Standard Physical Properties

Features

FBB Grinding Wheels made from PolyVinyl Alcohol and thermosetting resins. Its elasticity effect enables to produce good surface roughness. It is suitable for precision instrument grinding.

Major Applications

various rods, pins, bearings and blades

Specifications

Features

PVA Grinding Wheels made from PolyVinyl Alcohol and much characterized by its sponge type structure. It has elasticity effect, providing smooth mirror finish without scratches and heat generation.

Major Applications

Watch cases, accessories, necktie pins, and various stainless steel products

Specifications

Straight Type

Mounted Point Type