Operating instructions
14 
7. Speed regulation 
7.1.3  Speed setting for working with Brass, Copper 
workpiece- Ø  approx. r.p.m..  cutting speed m/min 
10 mm  2300  80 
20 mm  1270  80 
40 mm  640  80 
60 mm  425  80 
80 mm  320  80 
100 mm  250  80 
7.2 Speed change 
Rotational speed range 45 - 2300 min
-1
: 
The rotational speed of the work spindle is infinitely variable between 45 and 400 r.p.m. in the 1
st
step or in the 2
nd
 step between 200-2300 r.p.m using the potentiometer on the front side of the 
machine. 
speed setting at the potentiometer 1. step r.p.m.  2. step r.p.m. 
10 45 200 
20 105 350 
30 175 740 
40 260 1050 
50 325 1440 
60 360 1650 
70 400 1860 
80 460 2120 
90 490 2160 
100 500 2300 
Rotational speed 45 - 400 r.p.m.: 
The drive belt must be relocated if the lower speed level with a minimum speed of 45 r.p.m. is 
required. 
Proceed as follows:  
Remove the protective cover and release the drive belt by unscrewing the clamping nut and turning 
the star handle clockwise until the drive belt can be relocated. Then re-tighten the drive belt in the 
reverse sequence of steps. 
clamping nut
star handle
potentiometer
rotational speed 45-400 rpm










