ALFRA KFH 250 Mode D'emploi page 14

Adjusting the Cutting Width (B) and Height (H)
On shaft milling cutters:

Releasing the clamping lever makes the motor holder movable. The required cut depth can be set via the
scale.

Tighten the clamping lever.

The unit is ready for operation.

Verify the cutting width on a sample working piece. Avoid the maximal adjustment at the first run.
Maximal cutting width
When using radius milling cutters:
 Detach the motor from the basic unit. Insert a VHM radius milling cutter
into the chuck. Maintain a distance of Z = 107 mm to the radius centre
point here. This distance between the motor and the radius centre point is
necessary for correct positioning with respect to the work piece edge.
Fine adjustment is performed my means of a slight axial adjustment of
the motor in the clamping eye.
the case of VHM radius milling cutters, the angle adjustment must be 45°.
Releasing the clamping lever makes the motor holder movable. Set the required milling depth via the scale.
Caution: In the case of radius milling cutters, the maximum milling depth is limited!
 Set as follows:
- On radius milling cutters r = 3.0 mm → max. milling depth setting = 2.
- On radius milling cutters r = 4.0 mm → max. milling depth setting = 3.
- On radius milling cutters r = 5.0 mm → max. milling depth setting = 3.5.
 In the case of hard materials, the radii should be created by means of consecutive work steps with an
increasing feed depth.
14
clamping lever (30)
scale(13)
 St.37
 St.42
 Aluminium
 brass
 Stainless steel
14 mm
7-8 mm
In