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USER GUIDE
SOLID CARBIDE DRILLS
Regrinding Instructions
Regrinding Instructions for AP Regrinding Instructions for AG
and ACP Geometries and ACG Geometries
For each grinding operation, rotate the drill For each grinding operation, rotate the drill
180° and repeat the grinding procedure. 180° and repeat the grinding procedure.
1 Primary Clearance 1 Primary Clearance
a° D Range a° D Range
7 .031-.236 7 .031-.236
10 >.236 10 >.236
2 Secondary Clearance 2 Secondary Clearance
3 Chisel 3 Chisel
a° D Range a° D Range
100 .031-.189 100 .031-.189
105 .190-.394 105 .190-.394
95 .395-.787 95 .395-.787
4 Edge Preparation 4 Edge Preparation
R D Range R D Range
.0008” .031-.236 .0008” .031-.236
.0012” .237-.708 .0012” .237-.708
.0016” .709>UP .0016” .709>UP
Grinding Wheel Recommended Specifications: Grinding Wheel Recommended Specifications:
1 Diameter grinding wheel: GA2 1 Diameter grinding wheel: GA2
2 Grinding wheel bond: synthetic resin 2 Grinding wheel bond: synthetic resin
3 Grit size: 325/400 mesh (45/38µ) 3 Grit size: 325/400 mesh (45/38µ)
3
3
4 Diamond concentration: C-75 (3.3 carat/cm ) 4 Diamond concentration: C-75 (3.3 carat/cm )
5 Cutting fluid emulsion 3% 5 Cutting fluid emulsion 3%
232 ISCAR
