Page 103 - Morse_catalog_2022

SOLID CARBIDE DRILLS User Guide

Regrinding Instructions for Coolant Hole Geometries

For each grinding operation, rotate the drill
180° and repeat the grinding procedure.

Primary Clearance

1

a° D Range
7 0.8-6.0
10 >6.1

Secondary Clearance

2

Chisel a° D Range
100 3.0-4.8
105 4.9-10
95 10.1-20
3

Edge Preparation R D Range
0.02 0.8-6.0
0.03 6.1-18.0
0.04 18.1>UP
4

Grinding Wheel Recommended Specifications: 3. Grit size: 325/400 mesh (45/38µ)
1. Diameter grinding wheel: GA2 4. Diamond concentration: C-75 (3.3 carat/cm3)
2. Grinding wheel bond: synthetic resin 5. Cutting fluid emulsion 3%

103