Operator’s manual for the Pentruder MD1 Modular Drill System with MDU9 Modular Drive Unit - Original instructions
Page 31
4.8
Drill bit
Drill bit positioned to be fitted on the spindle unit - ST3
4.8.1
Mounting of the drill bit through threading
1. Clean the thread and lubricate with grease.
2. Thread the drill bit onto the spindle unit.
3. Check that the drill bit is correctly fastened.
4. If a “Slider” is used, be careful to check its condition prior to use. The spindle unit produces torque
levels high enough to destroy the “Slider”.
!
Important!
•
Don’t use tools directly on the drill bit tube when mounting it.
4.8.2
Mounting of the drill bit using the Quick Disconnect Coupling (QDC) (if Spindle unit with
QDC is used)
1. Before attempting to attach a drill bit to the spindle, make sure the drive motor, hydraulic or HF, is
disconnected from its power source. If the spindle unit is equipped with a quick disconnect
coupling, make sure the mating surfaces, the two slightly different diameters on the spindle, are
clean and lightly lubricated with grease.
2. Make sure the mating surfaces inside the drill bit adapter are clean and lightly lubricated with
grease.
3. Lightly tighten the lock screw on the spindle in a Clock Wise direction.
4. Attach the drill bit adapter, with drill bit, to the spindle, engaging the drive dogs with each other.
5. Firmly tighten the lock screw on the spindle in a Counter Clock Wise direction.
6. The drill bit is now ready to use.
4.8.3
Removing the drill bit using the Quick Disconnect Coupling
1. Before attempting to remove a drill bit from the spindle, make sure the drive motor, hydraulic or HF,
is disconnected from its power source.
2. Turn the lock screw on the spindle in an anti Clock Wise direction until stop.
3. Remove the drill bit, carrying its weight with one hand, or get help from another operator if the drill
bit is too heavy for one operator to handle safely.
4. Clean off any slurry on the spindle and inside the drill bit adapter after work is completed.
Warning!
•
The torque on the spindle is very high and careless handling of tools and
an accidental start of the drive motor could cause severe or fatal injury to
the operator.
