LM20UUOP 20mm Open Linear Ball Bearing Bushing for CNC
Part number: LM20UUOP3D Printer & CNC Parts
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Prices updated: 13 Oct 2026
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About this product
The LM20UUOP is an open-type linear ball bearing bushing for a 20 mm shaft. It is used on linear motion axes of CNC machines and 3D printers, where it slides smoothly along a round guide rod. The bearing has a steel ball cage and hardened ring ends for stable, reliable movement.
Specifications
- Inner shaft diameter (ID)
- 20 mm
- Outer diameter (OD)
- 32 mm
- Dimensions (ID x OD x length)
- 20 x 32 x 42 mm
- Type
- Open linear ball bushing
- Material
- Bearing steel
Frequently asked questions
Can I use it on a standard 20 mm round guide rod?
Yes. The bore is 20 mm, so it fits 20 mm round shafts such as the guide rods used on CNC machines and 3D printers. Keep the rod clean and well supported.
What does the OP in the model name mean?
OP stands for open type. The bearing body has a lengthwise slot, so it can be fitted onto a rod or rail from the side.
