Mounted Wheels and Screw-on Wheels

Superfinishing stones are usually vitrified bond grindstones which are frequently used in superfinishing of auto parts, consumer electronics and other precision machine parts, which require high accuracy and ultraprecision.

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Standard Selection of Mounted Wheels

1) Selection of Abrasive Grain

Work Material
Surface Roughness
Hard Chrome Plated Standard Cast Iron Stainless Steel Steel (HRC60)
Rough Finish
(0.9-0.7micro)
WA600RH20
GC600RH30
WA600RH20(+S)
GC600RH30(+S)
WA600RH10(+S)
GC1000RH30(+S)
WA600RH10(+S)
GC1000RH30(+S)
Medium Finish
(0.6-0.4micro)
WA1000RH30(+S)
GC800RH50
WA1200RH60
GC1000RH70
WA1000RH50
GC1500RH60
GC1500RH60
Super Finish
(0.3micro or less)
WA2000RH20
GC1500RH60
WA2000RH50
GC2000RH60
WA1500RH40
GC2000RH60
GC2000RH40

2) Grain Size
Grain size is determined by factors such as the purpose of grinding, the work condition and shape/dimension of the wheel. Generally, grain sizes within the range of F46-F180 are used.

3) Grade
Generally, harder grade (grade L-Q) wheels are used because of the grinding condition and other constraints (such as operating speed, wheel shape and tools used).

4) Structure
Wheels of comparatively dense, high in grain ratio (structure No.8 and lower numbers) are usually used.

5) Bond
Vitrified (V) bonded wheels are most commonly used. However, impact resistant wheels such as resinoid (B), rubber (R), and urethane (UP) bonded wheels are also used.