These 8mm Lock Collars are used to prevent axial movement on lead screws, smooth rods, shafts, and linear motion assemblies. Tightened with a grub screw, the collar clamps securely to the shaft, helping maintain consistent bearing alignment and preventing shift or drift during machine operation.

Ideal for CNC machines, 3D printers, and automation systems that require stable and repeatable motion control.

Includes: 4× 8mm Lock Collars

Specifications:

• Inner Diameter: 8mm

• Outer Diameter: 14mm

• Length: 7mm

• Grub Screw Size: M4

• Application: Shaft & lead screw axial positioning / motion retention