Sharp SH-920 Instruction Manual page 43

4.4 Suitable speeds of the table traverse: m/min
Workpiece
Soft steel
Material
Speed
4.5 Suitable Peripheral speeds of wheel: 20-30m/sec.
Wheel
Peripheral
Speed
Condition
Grinding resistance
Heat produced
Surface finish
Wheel worn-out
Safety
Material
Steel
Cast Iron
Tungsten Carbide
Zinc alloy & Light Metal
Heat-Treated
steel
6-15 30-50
High
small
much
fine
small
bad
P.43 OF 70
Tool steel Cast iron
6-30 16-20
Low
large
less
rough
great
better
Peripheral Speed
20-30 m/sec
20-18 m/sec
8-18 m/sec
25-30 m/sec