Machinery's Handbook, 31st Edition
1296
GRINDING WHEELS Table 4. Grinding Wheel Recommendations for Hardened Tool Steels According to their Grindability
Table 4. (Continued) Grinding Wheel Recommendations for Hardened Tool Steels
Wheel or Rim Diameter, Inches
Third- Choice Specifications
Second- Choice Specifications
First- Choice Specifications
Operation
Group 5 Steels
Surfacing Straight wheels 14 and smaller
Wet SFA60-H8V FA60-E12VP C60-IV Dry SFA80-H8V FA80-E12VP C80-HV Wet SFA60-H8V FA60-E12VP C60-HV Wet SFA46-G8V FA46-E12VP C46-GV Wet SFA60-G8V FA60-E12VP C60-GV 2 inches, go one grade softer in available
14 and smaller
Over 14
Segments or
2 rim or less
1 1 ∕
Cylinders
Cups
3 ∕ 4 rim or less
(for rims wider than 1 1 ∕ specifications)
Cutter grinding Straight wheels
… Wet SFA60-I8V SFA60-G12VP … Dry SFA60-H8V SFA80-F12VP … Dry SFA80-H8V SFA80-F12VP … Dry SFA60-I8V SFA60-G12VP … Wet SFA60-J8V SFA60-H12VP
… … … … … … … …
Dish shape Cup shape
Form tool grinding
8 and smaller 8 and smaller 10 and larger 14 and less 16 and larger
Wet FA80-J8V to FA180-J9V Dry FA100-I8V to FA220-J9V Wet FA80-J8V to FA180-J9V Wet FA80-J8V C80-KV Wet FA80-I8V C80-KV
Cylindrical
FA80-H12VP FA80-G12VP
Centerless Internal Production grinding
… Wet FA80-J5V C80-LV
…
Wet FA100-L8V C90-MV Wet FA90-K8V C80-LV Wet FA80-J8V C70-KV Wet FA70-I8V C60-JV Dry FA100-K8V C90-KV Dry FA90-J8V C80-JV Dry FA80-I8V C70-IV Dry FA70-I8V C60-IV
… …
Under 1 ∕ 2
2 to 1
1 ∕
Over 1 to 3
FA80-H12VP FA70-G12VP
Over 3
… …
Tool room grinding
Under 1 ∕ 2
2 to 1
1 ∕
Over 1 to 3
FA80-G12VP FA70-G12VP
Over 3
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