Proper drill speed for a given drill bit size:
Drill Dia.
1/16"
1/8"
3/16"
1/4"
TB-16
&
5/16"
SB-16
3/8"
7/16"
1/2"
5/8"
3/4"
SB-15
7/8"
1"
1-1/8"
SB-32
1-1/4"
SAFETY FEATURES
Cast Steel
Tool Steel
2,445
3,665
1,220
1,831
815
1,220
610
915
490
735
405
610
350
525
305
460
245
365
205
305
174
261
153
229
136
204
122
167
14
Grand Haven, MI 49417
Material Type
Cast Iron
Mild Steel
RPM
4,890
6,110
2,445
3,055
1,630
2,035
1,220
1,530
980
1,220
815
1,020
700
870
610
765
490
610
405
510
348
435
306
382
272
340
244
306
Dake Corporation
724 Robbins Road
www.dakecorp.com
Alum. &
Copper
12,225
6,110
4,075
3,055
2,445
2,035
1,745
1,530
1,220
1,020
762
668
595
535
REV012019