LMK6UU Linear Ball Bearings Deliver Rock Solid Precision With A 6Mm Bore And 12Mm Od Spec Featuring Square Flange Chromium Steel Construction For Glitch Free Linear Motion In Cnc Routers And 3D Printers

Set Of Four Linear Slide Units For CNC Router And 3d Work
✔️ Chrome Steel 6mm ID 12mm OD 19mm 21.5mm Flange Pack Of 4

This sealed slide unit houses chrome steel balls that glide smoothly along round shafts. You get a pack of four bearings designed to swap out worn parts fast. They sit nicely on your printer frame or router gantry without wobbling during tight jobs.

✅ Six millimeter inner hole takes standard rod sizes without play
✅ Twenty one point five by twenty one point five millimeter base mounts right to your machine plate
✅ Heavy duty chrome steel handles heat while keeping low drag
✅ Double sealed rings lock dust out so your guide stays clean for years

💡 What makes a pillow block bearing work better for high speed setups?
A sealed steel cage design keeps the rolling elements aligned under heavy loads.
- Metal housings take impact while guides stay smooth
- Low friction paths stop overheating on rapid passes
- Tight tolerances deliver steady tracking across long stretches

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