DSM series clamping sets are friction-locked connecting elements designed for use on cylindrical shaft ends as defined by DIN 748. The clamping sets can also be used on shafts with an already existing keyway (DIN 748/sheet 3, cylindrical shaft ends on electrical machines) without impairment to the sleeve's function. On motors with a high standard of balance quality (reduced vibration), shaft ends are frequently offered without fitted keys in order to preserve rotational symmetry. This represents the ideal application for clamping sets. However, for shaft ends fitted with keys and keyways, removal of the key on finely balanced shafts results in a decrease of quality. Approximate compensation can be achieved by filling the keyway with a double-density material (such as Densimet). It is also possible without major expense to purchase motors which, although fitted with keyway, are balanced without an inserted key.

Examples: Connection of gears, pulley and cone pulleys, indexing plates, couplings etc. on regular motor shafts with the tolerance of k6 resp. m6.

Following practical examples will give an overview of different applications.

Fig. 1: Pulley fixture. The hub can be made of an aluminium alloy. Observe minimum strength. High temperatures can impair retention force!

Back

Fig. 2: Gear fixture. For stringent concentricity precision requirements, a control surface is recommended for concentricity testing and any necessary correction.

Back

Back

Fig. 4: Indexing plate in alloy material at the shaft end of an indexing gear. Here, concentricity and the elimination of run-out are vital.

Back

Fig. 5: A coupling mounted on a motor shaft and the drive shaft of a pump.

Back

Fig. 6: Arrangement of the space-saving DSM on the end of the motor shaft in accordance with DIN 748.This DSM series is designed for servo-motors working with high-dynamic but less torque.

Back