Bore code B - without keyway
Bore code K - with keyway
Type R - with revolving retractable handle GN798.7
GN322.7 Spoked Safety Handwheel, Aluminium, Retractable Handle
These handwheels GN322.7, with a safety retractable handle are suitable for applications where the handle must not remain in the operating position.
In order to bring the handle into the operating position it has to be turned first through 90° to a stop against a torsion spring and then it is pushed against spring pressure into its hold position. By maintaining the forward thrust on the handle the handwheel can easily be rotated.
When releasing the handle the springs returns it back to the retracted position
Hub - machined
Rim - turned and polished, concentric and square to bore <0.4
Wheel Body - unmachined, matt shot-blasted.
Retractable Handle GN798.7