Mounting The Chuck On The Machine Spindle; Adjustment Of Spring Package For; Pull-Down Counterforce; Disassembly And Assembly Of The Chuck - Rohm KFD-N Serie Instrucciones De Servicio

3. Mounting the chuck on the machine spindle

1. Mounting the chuck on the machine spindle
1.1 Check the machine spindle or the machine-mounted
finished-machined adapter plate for radial and axial
run-out (permissible tolerance 0,005 mm to DIN 6386
and ISO 3089).
1.2 The centre mount must be designed so that the
chuck makes full contact with the mount face.
The plate or spindle face must be perfectly flat.
1.3 Remove the locking screw (33) at front side of chuck
and press chuck mounting screws (21) inwards till
the stop.
1.4 Move draw bar fully forward.
1.5 Draw clamping piston (03) in the chuck to the left
side, in rear position (Jaws in full inward position).
1.6 Screw power chuck on until it stops at the draw bar.
1.7 Turn chuck as far back as the bore and the alignment
nut of the spindle head coincide.

4. Adjustment of spring package for

pull-down counterforce

1. The pull-down counterforce is adjusted on workside
to a certain minimum size. If a higher force shall be
necessary when chuck is manufactured this can be
corrected without any problem with Röhm chucks.
The ideal pull-down counterface must be found
out in a test.
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30 – 260 daN
PRO PACKET
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5. Dismounting and mounting of chuck
1. Unscrew cover (06).
2. Pull out clamping piston (03) to the front.
3. Pull out base jaws (02).
4. Unscrew mounting screws (23).
5. Remove flange (04) from the body (01).
6. Unscrew fixing screws (10).
7. Pull out distance screws (07).
8. Remove discs (11) and plate springs (47).
47
09
25X12.2X1
31
M32X2
1.8 Press chuck against spindle mount and tighten chuck
mounting (21) screws alternately (see picture).
1.9 Unscrew cover (06).
1.10 Adjust frontal final position of the clamping piston by
turning the tension screw (12). The clamping piston
now must be approx. 1 mm before the inner cover
face.
The clamping piston (03) must not contact the
cover during chuck actuation. –
Damaging danger!
1.11 Bolt cover (06) and check function, jaw travel and
size of the operating power.
Dismounting of the chuck in reverse sequence.
Tension screw can be reached by unscrewing the
locking screw (08).
2. Unscrew thread pin (31).
3. Twist adjusting bolt (09) until the necessar force is
reached.
4. Tighten thread pin (31).
Adjust all bolts to same mark and vertical
distance.
09 Adjusting bolt
11 Disc
31 Thread pin
47 Plate spring
Clean and check all parts and lubricate with
Röhm grease F 80.
9. Mounting of chuck in reverse sequence.
Take care of correct numbering and position of
base jaws (02) and clamping piston (03). Take
care of correct position of plate springs (47).
See picture.
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