Issue 4
Original version
March 2010
7
[4] MOUNTING OF CUTTERS
The following procedure is to be used when mounting cutters.
ALWAYS DISCONNECT MACHINE FROM HYDRAULIC SUPPLY
Lay the machine on its side with feed handles uppermost, ensuring arbor is wound down to its lowest point to
enable access to socket screws RD4066. Take the appropriate pilot and place through hole in shank of cutter.
Insert shank of cutter into arbor ensuring alignment of two drive flats with socket screws RD4066. Tighten both
screws securely using hexagon key RD4088.
[5] REMEDIES FOR HOLE MAKING PROBLEMS
Problem
Cause
Remedy
Magnetic base won't hold
effectively
Material being cut may be too thin for
efficient holding
Swarf or dirt under magnet
Irregularity on contact between magnet
and work piece
Attach an additional piece of metal under
work piece where magnet will be located,
or mechanically clamp magnetic base to
work piece
Clean magnet
Use extreme care, file only imperfections
flush on to surface
Hole not cut at intended
centre of cut
Magnetic base is not holding effectively
Worn arbor bushing and/or ejector
collar
Too much feed pressure at start of cut
Cutter is dull, worn, chipped or
incorrectly sharpened
Worn or bent pilot, worn pilot hole
Loose bolts on motor bushing support
bracket, main casting or loose gib
adjusting set screws
See causes and remedies above
Replace! Only a few thousandths wear
permissible. New arbor bushing is needed
Light pressure until a groove is cut. The
groove then serves as a stabilizer
Replace or re-sharpen. Sharpening
service is available
Replace part or parts
Adjust where necessary
Poor hole quality, cutter
not cutting, motor stops
Incorrectly re-sharpened, worn or
chipped cutter
Coming down on swarf lying on surface
of work piece
Insufficient air pressure/volume
Gibs out of adjustment or lack of
lubrication
Swarf accumulated (packed) inside
cutter
Re-sharpen or replace
Take care not to start a cut on swarf
Check air supply
Adjust set screws
Clear cutter
