1. Locking principle
The inner diameter of the timing pulley and the outer diameter of the sleeve are tapered. The timing pulley slides along the tapered surface when the locking bolt is tightened.
Force PP', which presses onto the shaft and inner taper surface, is then generated through a wedge effect. This PP' force generates frictional force, which locks the timing pulley and shaft strongly.
Click to enlarge the illustration
2. Plated Series S Type Lock Pulley
Plated Series S Type Lock Pulley
- In addition to high strength, non-backlash locking.
The electroless nickel-plating on the pulley and sleeve, and the special coating on the bolt, provide improved corrosion resistace and dry locking without lubrication.