VXB
LM20UU 20mm Slide Bush Ball Bushing Linear Motion Bearing
LM20UU Linear Slide Bush Bearing
✔️ 20mm Shaft Diameter - Double Sealed - High Precision Linear Motion
The LM20UU is a double-sealed linear slide bush designed for smooth, accurate linear motion. Commonly used in CNC machines, 3D printers, and automation systems in the U.S., this linear bearing fits 20mm shafts and ensures quiet, stable, and low-friction performance for guide rails and motion assemblies.
✅ Item: LM20UU Bearing
✅ Type: Linear Slide Bush
✅ Shaft Diameter: 20mm
✅ Number of Ball Circuits: 5
✅ Seals: Double-sided seals
✅ Dynamic Load Rating (Cr): 882 N
✅ Static Load Rating (Cor): 1370 N
✅ Major Dimensions:
• Outer Diameter (D): 32mm
• Length (L): 42mm
• Retaining Ring Width (B): 30.5mm
✅ Eccentricity: 1.6
✅ Radial Clearance: 10μm (Precision), 15μm (High)
✅ Quantity: 1 Bearing
| Major dimensions | Eccentricity | Radial Clearance | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| dr | D | L | B | W | D1 | Precision | High | ||||||
| mm | tolerance | mm | tolerance | mm | tolerance | mm | tolerance | ||||||
| precision | high | ||||||||||||
| 20 | 0-7 | 0-10 | 32 | 0-16 | 42 | 0-0.2 | 30.5 | 0-0.2 | 1.6 | 30.5 | 10 | 15 | -6 |
💡 Why use a linear slide bush like the LM20UU instead of regular ball bearings?
Linear slide bushes are specifically built for straight-line motion. Unlike regular ball bearings that handle rotation, these bushings ride on guide shafts to deliver precise, low-friction travel - ideal for machines needing accurate linear movement without slop or wobble.