GN 000.5

Safety coupling bushings for handwheels with needle bearing

SKU: 7233 Category:
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Technical Drawing

Product Details

Standard Elements Main dimensions Weight
Description d2 H7 d3 * d4 -0.05 # d5 d6 max. l1 * l2 ±0.1 l3 w min. g
GN 000.5-1-K12 12 29 25 29 17 42 18 12 4 126
GN 000.5-2-K14 14 33 29 33 21 48 19 14 4 194
GN 000.5-3-K18 18 39 35 39 26 50 24 13 4 275
GN 000.5-4-K22 22 46 41 46 30 54 28 13 4 390
* Diameter d4 and length l2 of the coupling are located within the hub of the handwheel (H7 reamed hole).# Minimum handwheel hub diameter.

Additional information

Assembly instructions into the handwheel

Make H7 reamed a hole in the hub (see table) and a keyway for coupling. Remove the threaded nut of the bushing; insert the supplied keyway in its hole; insert the bushing into the hub and screw-on the nut.<BR>A "Push-coupling" or a "Pull-coupling" are possible following two different ways of assembling the bushing (see drawing).<BR>Lubrication is possible through the special holes.

Assembly to shaft

Bushing with H7 reamed hole and keyway in compliance with DIN 6885/2 P9 tolerance.

Features and applications

GN 000.5 safety coupling bushings are designed in accordance with accident prevention rules: in case of push or accidental pressure when the machine is operating, the handwheel is disengaged is in the rest position. Two roller bearings guarantee a smooth coupling to the shaft. The two toothed elements inside the bushing fit into each other in order to couple the handwheel to the shaft. The handwheel returns automatically to its rest position when it is released after the operation. Moreover, it is particularly suitable on shafts with a high number of turns since friction is reduced to a minimum and therefore the handwheel is not entrained by the rotation. GN 000.5 safety coupling bushings are suitable for assembly on handwheels in order to guarantee maximum accident prevention safety. <BR>


Hardened steel with ground sliding surfaces.