B - Plain Bore
K - Keyway
R - With Revolving Handle
GN924.7 Spoked Safety Handwheel, Aluminium, Retractable Handle
These spoked handwheels with retractable safety handle, GN 924.7, have a modern, attactive design. They 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 must be pulled upward 90° against the torsion spring, to a stop and then pushed axially against the spring pressure into its hold position. By maintaining the forward thrust on the handle, the handwheel can easily be rotated. When the handle is released, the spring returns it back to the retracted position.
The removable plastic cover shrouds the fixing components such as screws, countersunk washers as well as the shaft end.
Aluminium die casting - Hub machined, rim turned, plastic coated. Black, RAL 9005, textured finish SW. Silver, RAL 9006, textured finish SR.
Rim concentric and square to bore < 0.4
Retractable Safety Handles GN798.7 - Plastic, Technopolymer, black, matt. Retracting mechanism, Steel, blackened.
Countersunk Washers GN184 (for axial mounting)
d2 - can be bore or keyway.