Power chuck KFD-HS - RÖHM - #12

2.7 Check minimum dimension"X" see page 3 and correct it by turning the chuck on the draw tube (after separating the chuck form the spindle nose).

2.8 Check operation, jaw travel and amount of actuating force required.

2.9 Srew 21 in screw plugs and check chuck for radial runout and axial slip (at test rim).

3.1 Move draw tube to extrerme forward position.

3.2 Pushpiston3inchuck toforwardposition(jaws in outermost position).

3.3 If necessary, remove screw plugs 21 at front of chuck and push chuck mounting screws 11 inward (see Fig. 1).

3.4 Using the rotatable threaded bush 7, screw chuck onto draw tube as gar as it will go.

3.5 Alternately tighten the chuck mounting screws 11 (see Fig 1).

3.6 Check minimum dimension "X" see page 3 and correct it by turning the treaded bush 7 if necessary.

3.7 Check operation, jaw travel and amount of actuating force required.

3.8 Screw 21 in screw plugs and check chuck for radial runout and axial slip (at test rim).

1.1 Check spindle nose or mounted, finish-machined adapter plate for radial and axial run-out (permissible tolerance 0,005 mm to DIN 6386 and ISO 3089).

1.2 The adapter plate must be designed so that the chuck makes full contact with the plate face. Theplateor spindlefacemust beperfectly flat.

2.1 Move draw tube to extreme forward position

2.2 Pull piston 3 in chuck to rearward positon (jaws in innermost position).

2.3 Remove screw-plug 21 at front of chuck and push chuck mounting screws 11 in as far as they will go.

2.4 Screw power chuck on draw tube as far as it will go. (Make sure that the draw tube screw thread is pro­perly aligned).

2.5 Back off chuck until bore and positioning nut of spindle nose coincide.

2.6 Put chuck against spindle nose and alternately tigh­ten the chuck mounting screws 11 (see Fig. 1).

Fig. 1

1. To maintain its reliability and high quality, the chuck must be lubricated at the grease nipples at regular intervals (see illustration). After lubrication, move the clamping piston several times over its full stroke in order to distribute the grease more evenly. Then lubricate again.

2. Performance and clamping force must be checked after some time, depending on the conditions of use. The most reliable method of measuring the clamping force is by means of a load cell.

3. Performance check: The clamping piston must move when the lowest possible actuating pressure of 3-4 bar is applied. However, this method is not relia­ble enough to serve as a substitute for the clamping force measurement.

If the clamping force has dropped substantially or if the clamping piston can no longer be moved with ease, the chuck must be disassembled, cleaned and relubricated.

4. Maintenance intervals: Depending on the conditions of use, but not later than after the specified periods. We recommend our special grease F 80.

ALubricate all lubricating points every 20 hours of operation heavy soling every 8 hours. Disassemble the chuck and clean all parts

1. Remove mounting screws 12 and 13.

2. Jack off adapter plate.

3. Remove piston.

4. Unscrew all retaining screws 15 in the base jaws 2.

5. Pull out base jaws 2.

6. To reassemble the chuck, reverse the above proce­dure (making sure that the base jaws and the piston are properly numbered and positioned). Take care to avoid damage to the sealing cord 25 when pushing the base jaws into the chuck body.

When ordering spare parts, please quote the Ident. No. of the chuck and the item number or designation of the desired part (see page 3). - The Ident. No. will be found on the face of the chuck.