Looking for crank / linkage replacement

Question

I have a crank that slips when I apply torque. It slips on the internal teeth.

I have attached the picture of two different cranks. Crank A and Crank B appear to be similar, but are actually of different makes and brands.

Crank A - The disassembled crank is the one that slips. The end to end length of the linkage of Crank A is 250mm.

On the crank bracket, the center bolt line to center bolt line of the outer bolt holes is 120mm.

Crank B - I have another window with a crank that works. I do not recognize the brand on this crank (WW? MM?)

Bob · Accepted Answer

Thanks for posting. I believe the first operator you show might be the Getty 39-045. Please compare to the diagram below just to be safe.

Dimensions for 39-045

The second operator might be our 39-023, but you'll need to confirm the dimensions below match, particularly the 11" long straight arm. I am afraid this operator is not available in mill; it comes only in black and white. Apologies for any inconvenience.

Dimensions for 39-023