A
Anonymous
Apr 19, 2026
Rating: 5/5
Great for 3D Printer
Upgraded my Z-axis linear rails. Much quieter than the old plastic bushings.
Description
Imported Linear Bearing LM4 5 6 3 10 12 13 16 8 25 30 35 40 50UU for Smooth Shaft Sliding
Reviews
Attributes
| Brand | - |
| Category | Industrial Small Parts / Bearings & Bushings |
| Origin | - |
| Model Series | LM UU Series |
| Material | GCr15 Bearing Steel |
| Surface Treatment | Black Oxide Coated |
| Seal Type | Double Rubber Seals |
| Shaft Compatibility | Ground Hardened Shafts |
| Precision Class | Normal Grade |
| Cage Material | Steel Retainer |
| Lubrication | Pre-greased |
| Operating Temperature | -20°C to 120°C |
| Package Content | 1 x Linear Bearing |
5 reviews
A
Anonymous
Mar 28, 2026
Rating: 5/5
Reliable performance
Using these in an automation project. They handle the load well without excessive wear.
A
Anonymous
Mar 28, 2026
Rating: 5/5
Smooth motion for CNC
These bearings glide perfectly on my ground shafts. No binding issues noticed during initial setup.
A
Anonymous
Mar 23, 2026
Rating: 4/5
Good quality import
Solid construction. One was slightly tight but loosened up after some use.
A
Anonymous
Mar 12, 2026
Rating: 5/5
Exact specifications
Measured the inner diameter and it matches the standard tolerance for LM series.
5 FAQ
Q: Are these compatible with soft steel shafts?
A: Using soft shafts is not recommended as it may cause premature wear on the bearing balls.
Q: Do these require additional lubrication?
A: They come pre-greased, but periodic maintenance is suggested for heavy use cases.
Q: Can I use these in high temperature environments?
A: Standard grease is rated up to 120°C. For higher temps, special lubrication is needed.
Q: What is the tolerance on the inner diameter?
A: The inner diameter follows standard ISO tolerance for LM UU series bearings.
Q: What shaft hardness is recommended?
A: We recommend using hardened ground shafts with HRC 50-60 for best longevity.
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