Products Power Transmission Products

  • Lock Pulleys

N Type Lock Pulleys

N Type Lock Pulleys can be locked easily with a single nut.

Shaft diameters available from 7mm. Ideal for small shaft locking.

N Type Lock Pulleys picture

1.Locking principle

Timing pulleys move by sliding along the taper face. A wedge effect generates P・P' force that pushes down on the shaft and inner taper face. This thrust generates friction that tightly connects the Timing Pulley to the shaft.

Click to enlarge the illustration

2. New Service

  • Lock pulleys for urethane belts and other items are also available.
  • Lock pulleys for competitor tooth profiles also available. (Lot pricing)

Size list

Name Pitch (mm)
P3M 3
P5M 5
Name Pitch (mm)
XL 9.525
L 9.525
H 12.700