Efficiently
drilling large hole is easy, when using a Gerfa piloted cutter. Gerfa
cutters produce a smooth round hole in the right place with the right
diameter at the right price. Any diameter hole can be selected within
the range of 40.1 till 150 mm. Only 7 sizes of arbors cover the full
range of these cutters.
Cutter
ø
Arbor size
Pilot
hole dril
ø
bush
40,1-45
1
20
19,75
45,1-52
2
24
23,75
52,1-65
3
28
27,75
65,1-80
4
32
31,75
80,1-100
5
38
37,75
100,1-125
6
46
45,6
125,1-150
7
58
57,6
Piloted
cutters are made of cobalt high speed steel of superior quality. The
are fully ground with spiral flanks, have 150º point angles and
chip breaker grooves. The spiral ground form of the cutters eliminates
the need for re-grinding fixtures; the cutting face itself only having
to be taken back. This can be done many times without loss of diameter.
The use of piloted
cutters gives the following advantages:
Low costs
Rapid metal removing
Effective chip
clearance
Easily reground
Long life. The
cutter can be repeatedly reground until almost none remains
After regrinding
the drilling length stays the same
Any diameter
hole between 40 - 150 mm
ARBORS
FOR CUTTERS
Made from high
quality heat treated steel
Available in
long or short form for each size
Morse Taper shank
standard
only 7 arbors
to cover the full range of cutters
delivered complete
with all components for mounting and using cutters
