12
8.0 Speed adjustment dependent on the cutting speed
The values set out in the table are theoretical values and may be used to provide a rough guide for gear
changing. Since a whole range of other parameters also plays a major role in adjusting the speed, we can-
not offer any guarantee if the tool is damaged when using the values in the table. Drilling work for which the
speeds are outside the range of the core drill (values printed in italics), should only be completed with ex-
treme care and by trained personnel.
3
4
5
6
7
[m/s]
50
1146
1528
1910
2292
2674
3rd gear
60
955
1273
1592
1910
2228
3rd gear
65
881
1175
1469
1763
2057
3rd gear
70
819
1091
1364
1637
1910
3rd gear
75
764
1019
1273
1528
1783
3rd gear
80
716
955
1194
1432
1671
3rd gear
85
674
899
1123
1348
1573
3rd gear
90
650
849
1061
1273
1485
3rd gear
95
603
804
1005
1206
1407
3rd gear
100
573
764
955
1146
1337
3rd gear
110
521
694
868
1042
1215
3rd gear
120
477
650
796
955
1114
3rd gear
130
441
588
735
881
1028
3rd gear
140
409
546
682
819
955
3rd gear
150
375
509
650
764
891
3rd gear
160
358
477
597
716
836
3rd gear
170
337
449
562
674
786
3rd gear
180
318
424
531
650
743
3rd gear
190
302
402
503
603
704
3rd gear
200
286
375
477
573
650
3rd gear
220
260
347
434
521
608
2 or 3
240
239
318
398
477
557
2 or 3
260
220
294
375
441
514
2 or 3
280
205
273
341
409
477
2 or 3
300
191
255
318
375
446
2 or 3
320
160
239
298
358
418
2 or 3
340
169
225
281
337
393
2 or 3
360
159
212
265
318
375
2nd gear
380
120
201
251
302
352
1 or 2
400
143
191
239
286
334
1 or 2
420
136
182
227
273
318
1 or 2
440
130
174
217
260
304
1 or 2
460
125
166
208
249
291
1 or 2
480
119
159
199
239
279
1st gear
500
115
120
191
229
267
1st gear
520
110
147
184
220
257
1st gear
540
106
141
177
212
248
1st gear
560
102
136
171
205
239
1st gear
580
99
132
165
198
231
1st gear
600
95
127
159
191
223
1st gear
620
92
123
154
185
216
1st gear
640
90
119
149
179
209
1st gear
660
87
116
145
174
203
1st gear
680
84
112
140
169
197
1st gear
Bit capacifityø
concrete
concrete
rock
[mm]
reinforced
