Power chuck KFD-HS - RÖHM - #11

- All surfaces requiring lubrication should be reachable where manual lubrication is involved. (Tight component fits mean that high application pressure is required. A high-pressure grease gun should therefore be used if necessary).

- Grease is best distributed for internal moving compo­nents during manual lubrication by running on the end positions several times, lubricating them again and then checking the clamping force.

- Lubricating impulses should ideally occur while the clam­ping medium is in the open phase for the best lubricant distribution results during central lubrication. Clampingforceshouldbecheckedwithaclampingforce measuring instrument prior to recommencing serial work and between service intervals. "Regular checking is the only guarantee for optimum safety".

It is advantageous to run on several times the end posi­tions of internal moving components after 500 clamping operations at the latest. (Lubricant which has been pres­sed out is reapplied to the pressure surfaces as a result. The clamping force is maintained for a longer period of time as a consequence).

Before the clamping medium can be used again after a collision, it must be subjected to a specialist and qualified crack test.

Slot nuts used for connecting top jaws to basic jaws should only be replaced with ORIGINAL ROHM slot nuts.

Different lubricating, cooling and other media are required when operating a clamping fixture. These are generally applied to the clamping medium via the distributor casing. The most frequently encountered of such media are hydraulic oil, lubricating oil/grease and coolant. Careful attention must be paid to these substances when handling the clamping medium to prevent them penetrating the soil or contaminating water. Danger! Environmental hazard! This applies in particular

-- during assembly / dismantling, as residual quantities of such substances are still present in lines, piston chambers and oil bleeding screws, -- to porous, defective or incorrectly-fitted seals, -- to lubricants which, due to design-related reasons, emerge from or spin out of the clamping medium during operation. These emerging substances should therefore be collected and reused (or disposed of in accordance with applicable regula­tions)!

1. The machine spindle should only be started after clamping pressure has built up in the clamping cylinder and clamping has been achieved within the permitted working range.

2. Clamping should only be relieved when the machine spindle is stationary. An exception is permitted if loading / unloading is intended during the entire procedure and if the design of the distributor / cylinder permits this.

3. A signal should shut down the machine spindle immedia­tely if the clamping energy fails.

4. The workpiece should remain securely clamped until the spindle is stationary in the event of the clamping energy failing.

5. An alteration of the current position should not be possible in the event of an electric power failure and re-activation.

Wrong

Right

Projecting length of mounted workpiece too great relative to chucked length

Support workpiece between centres or using a stady

Chucking diameter too great

Use a larger chuck

Workpiece too heavy, chucking step too short

Support between cen­tres, extend chucking

^step m—^

Chuck using greatest possible chucking diameter

Chucking diameter too small

Workpiece has a casting or forging-related taper

Chuck using self-aligning inserts

TI