Operators Manual - Pentruder Modular Drilling system
14
Spindle unit - ST2
Fig. 9. Spindle unit-ST2 and gearbox-MG41.
Three different spindle units are available to give a very wide speed range still using the same
gearbox. The spindle unit can be exchanged and the speed can be adapted to what the work
requires.
Small diameter drill bits are run with the ST1 spindle unit.
Big diameter drill bits are run with the ST2 and ST3 spindle units.
Chart 1 below describes the spindle speeds of ST2 and ST2 with drifferent hydraulic motors
and Pentpak 15 or 25. (The ST1 spindle unit is available only from August 2004)
