About this Item
- Fits all A-Drive 40:90 double worm gear reducer gearboxes
- Made from hardened, plated steel
- Fits snuggly into the key stock groove for the drive pipe
- Measures 3 1/2 in. long x 5/16 in. wide x 5/16 in. tall
- Replacement part
The A-Drive 40:75 Drive Shaft Key Stock slides into the slot on the double worm reducer gearbox where the drive pipe comes into the gearbox. Replacement part for all 40:90 enclosed gearboxes. Measures 3 1/2 in. long x 5/16 in. wide x 5 /16 in. tall. Made from hardened, plated steel and cut to length for the input size.
What is a key stock?
Key stock is a small metal block or wedge inserted between a shaft and the hub of a pulley, gear, sprocket, or other rotating power devices. It provides driving torque and prevents movement. One part of the key fits into a precut slot in the shaft known as a key seat. The remainder slides into a groove in the hub called a keyway.