Woodruff key 3x3.7mm half moon for primary pinion clutch side for Simson S50, KR51 Schwalbe, Sperber

The easiest and most cost-effective way to create a shaft-hub connection. The Woodruff key is the connecting element between the shaft and the hub located on the shaft. This allows the shaft's torque to be transferred to the hub or gear. Woodruff keys were formerly also called "woodruff wedges." The Woodruff key consists of a crescent-shaped metal part that is inserted into the specially milled groove on the tapered shaft. Due to the fact that the semicircular disc protrudes, it serves as a driver for the driven component and transmits the torque. The Woodruff key offered here, also called a "half moon," has a width of 3 mm and a height of 3.7 mm. The half moon is installed on the left side of the crankshaft (clutch side) and...