Pack Of Four Clamp On Shaft Collars For SBR12 Linear Rail With M4 Set Screws 12mm Bore 30mm Outer Diameter 10mm Thick Aluminum Alloy Lightweight Yet Durable Easy Install And Tighten For DIY CNC Milling Projects

Pack of four aluminum shaft collars for SBR12 rails
✔️ 12mm bore, 30mm OD, 10mm thick; M4 screws included

These clamp-on collars secure components on SBR12 linear rails, ideal for DIY CNC milling setups. They bite the shaft firmly with M4 screws, keeping parts in precise alignment during motion.

✅ bore: 12 mm
✅ outer diameter: 30 mm
✅ thickness: 10 mm
✅ material: aluminum alloy, lightweight and corrosion resistant
✅ screws: M4 set screws included
✅ pack: four

💡 What is a good clamp-on shaft collar for CNC rail setups?

It's a handy addition for quick fixes and reliable retention on 12 mm shafts used in SBR12 rails.

- handy for securing parts on a CNC axis
- keeps alignment under load during milling
- uses M4 screws for solid clamping