10/19
CH18FT
Made in China to TQB Brands Pty Ltd specifications
P a g e
| 6
Visit us at www.tqbbrands.com.au
Speed Adjustment
Fig 16-1 Speed Adjustment
1.
Open the pulley case and loosen the belt tension lock
handle
2.
Choose speed for drilling operation and move belt to
correct position for preferred speed
3.
Push motor backward until moderate belt tension as
required.
4.
Re-tighten the lock handle. 16-1 & 16-2
Drilling Speed (Approximately)
Belt Tension Adjustment
Correct belt tension: Use 4.5kg’s of hand pressure on the belt as shown below. The distance is 1/2” (13mm) + 10%
Size
Diameter
Cast Steel
Tool Steel
Cast Iron
Mild Steel
Alum. & Copper
Cutting Speed
m/min
ft/min
m/min
ft/min
m/min
ft/min
m/min
ft/min
m/min
ft/min
12
40
18
60
24
80
30
100
60
200
mm
Inch
Cutting Speed Revolution Per Minute
2
1/16
1910
2445
2865
3665
3820
4890
4775
6110
9550
12225
3
1/8
1275
1220
1910
1835
2545
2445
3185
3055
6365
6110
5
3/16
765
815
1145
1220
1530
1630
1910
2035
3820
4075
6
¼
610
610
955
915
1275
1220
1590
1530
3180
3055
8
5/16
480
490
715
735
955
980
1195
1220
2390
2445
10
3/8
380
405
570
610
765
815
955
1020
1910
2035
11
7/16
350
350
520
525
700
700
870
870
1740
1745
13
1/2
300
305
440
460
590
610
735
765
1470
1530
16
5/8
240
245
360
365
480
490
600
610
1200
1220
19
3/4
190
205
285
305
380
405
480
510
955
1020