Page 12 - HOLE_MAKING_CATALOG_INCH_2022_P237-P372

USER GUIDE
DEEP DRILLING - BTA SYSTEM

Spare Parts

Diameter Insert Insert clamping screw Key lbf*in Solid carbide Guide pad Key
range guide pad clamping screw
.551-.629 TOGT 070304-DT/GF SR 14-560/S M2.5X0.45 T-8/5 10.6 GPS-05-18-060-DC
.630-.708 TOGT 080305-DT/GF SR 14-560/S M2.5X0.45 T-8/5 10.6 GPS-05-18-075-DC
.709-.787 TOGT 090305-DT/GF SR 14-560/S M2.5X0.45 T-8/5 10.6 GPS-06-20-085-DC
.788-.826 TOGT 100305-DT/GF GPS-06-20-085-DC SR 34-508 M2.2X0.45 T-7/5
SR 34-506 M3X0.5 T-9/5 17.7
.827-.865 TOGT 100305-DT/GF GPS-06-20-100-DC
.866-.984 TOGT 110405-DT/GF SR 14-571/S M3.5X0.6 T-15/5 42.5 GPS-06-20-100-DC
.985-1.102 TOGT 120405-DT/GF SR 14-506 M4X0.7 T-15/5 42.5 GPS-06-20-120-DC
1.103-1.180 TOGT 130408-DT/GF GPS-06-20-120-DC SR 34-508 M2.2X0.45 T-7/5
1.181-1.259 TOGT 130408-DT/GF GPS-07-20-120-DC
SR 16-212/L10 M5X0.8 T20/5 88.5
1.260-1.535 TOGT 140510-DT/GF GPS-07-20-120-DC CSTB-3L065 M2.2X0.45 T-9/5
1.536-1.575 TOGT 140510-DT/GF GPS-08-25-155-DC

Troubleshooting for Insert Damage

Examples of Trouble With the Cutting Edge

4. Crater wear
1. Chipping, fracture

2. Flaking

5. Initial chipping

3. Flank wear

Solution
Problem Cause
Grade Cutting conditions / other
1. Chipping, fracture • Excessive vibration • Use a tough grade • Reduce the feed rate
or impact • Eliminate the vibration
• Torn away built-up edge
2. Flaking • Excessive vibration • Use a tough grade • Reduce the feed rate
or impact • Eliminate the vibration
3. Flank wear • Cutting speed too high • Use a grade with high • Reduce the cutting speed
• Inadequate tool toughness wear resistance • Reduce the feed rate
• Use a coated grade • Use coolant properly
4. Crater wear • Cutting speed too high • Use a grade with high • Reduce the cutting speed
• Feed rate too high wear resistance • Reduce the feed rate
• Inadequate tool toughness • Use a coated grade • Use coolant properly
5. Initial chipping • Inappropriate guide • Use a tough grade • Adjust or change the guide
bush or pilot hole bushing or pilot hole
• Misalignment • Reduce the feed rate
• Correct the misalignment

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