13
PB32 - Revised 120810
MOTOR CONTROL PB32
H
The drill unit or “motor” of the PB32 is controlled by a twin
push button switch at the top of the control panel.
The green button is ON the red button is OFF.
The green button is flush with the surrounding bezel.
The red button is raised above the surrounding bezel.
This is to prevent inadvertent operation of the drill unit.
The motor will not operate unless the magnet is switched
ON first.
BEFORE staring the motor the security of the magnet
should be physically checked, if any movement is possible
this should be rectified BEFORE using the drill.
If motor control has an under-voltage relay, if the power is
interrupted the motor will stop and will not restart when the
power is resumed until the motor control is operated again.
The PB32 is a single speed drill unit with a nominal no-load speed of 550 rev/min.
The PB32 Combi is variable speed, but for the purposes of using annular cutters on mild
steel, the speed should be st to its maximum.
Under load the drill unit will regulate its speed depending on the load applied.
ie: a small cutter will run faster than a larger cutter (if the same feed rate is applied)
The PB32 has the optimum power / torque / spindle speed for HSS annular cutters in the
range
Ø
12mm to
Ø
32mm, cutting EN10025 S235J steel or its equivalent.
CUTTING SPEEDS
—HSS CUTTERS
Cutting Speeds (Imperial)
Aluminium 2.37”
Brass 1.75”
Mild Steel 1.00”
High Tensile 0.37”
0.37” 0.75”
1.25”
1.62”
2.0”
2.37”
2.75”
3.12”
Cutter Diameter (inches)
Material
Surface Speed
(Inches/min)
Cutting Speeds (Metric)
Aluminium 60
Brass 45
Mild Steel 24
High Tensile 9
Material
Surface
Speed
(M/min)
PLEASE NOTE: These figures are quoted for guidance, actual performance will be
dictated by material type, thickness, hardness, application and cutter condition
Cutting Speeds
—suggested speed rates for varying cutter diameters / materials
