4 Pack SBR20 Linear Rail Stop Collars Aluminum Alloy Shaft Lock Rings 20mm Inner Diameter 40mm Outer Diameter 12mm Thick Pro Grade CNC Parts Tool For Linear Guides Milling Machines

4 Pack SBR20 Rail Shaft Stop Collars in Aluminum
✔️ Inner 20mm, outer 40mm, 12mm thick, aluminum alloy, 4 pcs

These shaft stop collars clamp onto SBR20 linear rails, fixing and positioning shafts with precision. They’re commonly used in CNC machines, milling setups, engraving devices, and precision modules to prevent shaft drift and reduce bearing wear.

✅ Inner diameter 20mm for SBR20 rail compatibility
✅ Outer diameter 40mm and 12mm thickness for precise fit
✅ Aluminum alloy with natural anodized finish for corrosion resistance
✅ Pack of 4 pieces with clamp-on set screw for secure retention

💡 What is a shaft stop collar used for in precision linear guide setups? A handy overview for this product type. - It locks the shaft onto the rail to prevent axial movement and misalignment. - It protects bearings and guides by holding the shaft in a fixed position. - It’s a handy component in CNC, engraving, and milling rigs. - It’s made from aluminum alloy with an anodized finish for corrosion resistance.