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PB450 US - W18XC1053/US - Revised 030113
The PB450 is a 2 gear drill unit with nominal load speeds of 250 / 450 rpm. Under load
the PB450 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 PB450 has the optimum power / torque / spindle speed for HSS annular cutters in
the range
Ø
1/2” to
Ø
2”, cutting EN10025 S235J steel or its equivalent.
The PB450 can also be used on other materials such as high tensile steel and stainless
steel if the appropriate speed for the material to be cut is selected.
CUTTING SPEEDS/MATERIALS
—HSS CUTTERS
Cutting Speeds
—suggested speed rates for varying cutter diameters / materials
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)
WORKPIECE MATERIAL AND SIZE LIMITATIONS - MAGNET
The electro - magnet clamping force is measured as the pull off load when clamped on a
steel plate (EN10025 S235J or its equivalent) of 1” thickness, flat with a good
surface and free from rust and debris.
For any other workpiece material the clamping force will be different, any difference in
workpiece thickness and the clamping force will deviate.
The minimum recommended plate thickness for the electro-
magnet is 1/2” thick.
If the workpiece is thinner than recommended then an additional plate, made of suitable
material should be added by clamping to the workpiece, this will help the electro-magnet
become more secure.
BEFORE using the drill always ensure the magnet is held onto the work piece securely.
