Machinery's Handbook, 31st Edition
1294
GRINDING WHEELS Table 4. Grinding Wheel Recommendations for Hardened Tool Steels According to their Grindability Operation Wheel or Rim Diameter, Inches First-Choice Specifications Second-Choice Specifications
Table 4. (Continued) Grinding Wheel Recommendations for Hardened Tool Steels
Cutter sharpening Straight wheel
… Wet FA46-L5V FA60-K8V … Dry FA46-J8V FA60-H12VP … Dry FA60-J5V FA60-G12VP … Dry FA46-K5V FA60-G12VP … Wet FA46-L5V FA60-J8V
Dish shape Cup shape
Form tool grinding
8 and smaller 8 and smaller 10 and larger 14 and less 16 and larger
Wet FA60-K8V to FA120-L8V Dry FA80-K8V to FA150-K8V Wet FA60-K8V to FA120-L8V Wet FA60-L5V SFA60-L5V Wet FA60-K5V SFA60-K5V Wet FA80-L6V SFA80-L6V Wet FA70-K5V SFA70-K5V Wet FA60-J8V SFA60-J7V Wet FA54-J8V SFA54-J8V Dry FA80-I8V SFA80-K7V Dry FA70-J8V SFA70-J7V Dry FA60-I8V FA60-G12VP Dry FA54-I8V FA54-G12VP Wet FA60-I8V FA60-G12VP Dry FA60-H8V FA60-F12VP Wet FA60-H8V SFA60-I8V Wet FA46-G8V FA46-E12VP Wet FA46-G8V FA46-E12VP 2 inches, go one grade softer in
Cylindrical
Centerless Internal
… Wet FA60-M5V SFA60-M5V
Production grinding
Under 1 ∕ 2
2 to 1
1 ∕
Over 1 to 3
Over 3
Tool room grinding
Under 1 ∕ 2
2 to 1
1 ∕
Over 1 to 3
Over 3
Group 3 Steels
Surfacing
Straight wheels
14 and smaller 14 and smaller
Over 14
2 rim or
1 1 ∕ less
Segments or Cylinders
Cups
3 ∕ 4 rim or less
(for rims wider than 1 1 ∕ available specifications)
Cutter grinding
Straight wheel
… Wet FA46-J8V FA60-J8V … Dry FA46-I8V FA46-G12VP … Dry FA60-H8V FA60-F12VP … Dry FA46-I8V FA60-F12VP … Wet FA46-J8V FA60-J8V
Dish shape Cup shape
Form tool grinding
8 and smaller 8 and smaller 10 and larger
Wet FA80-K8V to FA150-L9V Dry FA100-J8V to FA150-K8V Wet FA80-J8V to FA150-J8V
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