LM 20 UU NB - sealed linear bearing

Precision sealed linear bearing LM20UU NB with dual seals AI-Powered Review

Technical description & applications

The LM20UU NB is a closed-type linear bearing with dual sealing (UU) for shafts Ø 20 mm. The NB variant indicates the manufacturer’s sealed version, offering durability in challenging environments.

Typical parameters:

• Bore: 20 mm

• Outer diameter: 32 mm

• Length: 42 mm

• Seal type: dual (UU)

• Designed for linear motion systems with moderate loads

• Applications: CNC machines, linear guides, automation, precision devices

Benefits:

• Smooth movement with minimal play

• Protection against dust, particles, and oil ingress

• Reduced maintenance frequency

• Wide compatibility with standard LM20UU mounts

• Easy replacement and installation

Typical uses:

• CNC guide rails

• Automation and robotic systems

• Precision measurement and optical devices

• Linear motion modules in machines

Installation tips:

• Keep surfaces clean before mounting

• Avoid damage to seals during handling

• Use appropriate lubrication when necessary

FAQ (EN)

Q: What does LM20UU NB mean?
A: LM20UU is a sealed linear bearing for 20 mm shafts with dual seals; NB refers to the brand or sealed variant.

Q: Is this bearing sealed?
A: Yes - it has dual seals (UU) protecting it from contaminants.

Q: What applications suit this bearing?
A: CNC systems, automation, linear guides, and precision equipment.

Q: Does it need frequent lubrication?
A: Thanks to its sealed design, lubrication intervals are less frequent compared to open types.

Q: What are its dimensions?
A: Standard 20 x 32 x 42 mm, compatible with many existing mounts.