ROHM DURO-T hand-operated chuck (with key bar principle) - Manual (Page 10)

10
Important Notes
• When attaching ensure that the chuck floor lies
planar (Section 1).
• Only clamp and test the chuck in the attached condi-
tion (Section 2).
• Basic jaws may not be positioned outside the mar-
king grooves.
• Basic jaws may only be adjusted after releasing the
pressure pins.
• Never hammer on jaws that move heavily; jaws
must always move easily. Clean jaws and guides.
• Capping jaws (hardened - multi-level or soft) are not
to be screwed off and are also not to be exchanged
with other chucks if the original accuracy is to be
retained.
• Multi-level jaws delivered later are only pre-worked
and must be milled for precise radial (as described in
4.3) and axial runouts.
• Only clamp with key extension or with hammer taps!
Caution:
Jaw guides are not chamfered (contamination of seal)
Caution: Danger of cuts!
Maximum permissible rotation speed
The max. permissible rotation speed has been deter-
mined so that under max. clamping force and the hea-
viest allocated clamping jaws, 1/3 of the clamping force
is available as remaining clamping force. For this, the
clamping jaws may not exceed past the chuck exterior
diameter.
The chuck must be in perfect condition. In addition, the
conditions of DIN 6386 Part 1 are valid.
Chuck size 125 160 200 250 315 400 500 630
max. speed
min-1 6000 5400 4600 4200 3300 2200 1900 1100
Clamping force
The clamping force is the sum of all radial jaw forces on
the work piece at stand still. The given clamping forces
are guidelines. They are valid for chucks in perfect condi-
tion that are lubricated with Röhm F80 grease.
Chuck size 125 160 200 250 315 400 500 630
Torque on the key
in Nm 10 40 60 70 80 90 100 100
Total clamping
force kN 1)
8,5 30 48 66 80 95 102 102
Torque on the key
in Nm 40 120 155 190 210 260 320 350
Max. total clam-
ping force in kN 23 73 114 185 240 260 290 320
1) to retain accuracy
1. Attaching the chuck onto the machine spindle
Quality M8 M10 M12 M16 M20 M24
12.9 35 60 90 160 240 380 Nm
Wrench torques in Nm:
The designed and provided screw length and thread tightness must
be retained.
1.1 Check machine spindle head and the completely
machined intermediate flange on the machine for
axial and radial runout (perm. 0.005 - to DIN 6386
and ISO 3089).
1.2 The flange must be positioned so that the chuck is
set on the same plane. The plane level on the flange
or on the spindle must be absolutely level.
Rework of the chuck is prohibited!
Threads, centering, short ball flanges must be
processed so that the chuck floor is plane with
the flange. Under no circumstances may the
outer edge serve as the planar surface!
1.3 Place the chuck on the flange. Tighten the fastening
screws in series and equally. These may not exert
any force on bore walls, otherwise the chuck body is
stressed and the jaws jam up.
Note: Set down surfaces must be plane and clean.
Bore holes, in particular threads, must be cylindrical-
ly countersunk, deburred and clean.
With proper attachment, the jaws must be as easily
moved as before attachment. If they are more diffi-
cult to move the chuck body is under stress.
Montage- und Betriebsanleitung für
Fremdsprachentexte ...
Handspannfutter (Keilstangenprinzip)
Fremdsprachentexte ...
Fremdsprachentexte ...
mit Backensicherung
DURO-T
E
F
RUSS
Imbalance
Chuck is heaved 1 on force quality G 6,3 according
to DIN/ISO 1940 part.