LM20 Standard Linear Ball Bearing 20×32×42mm Open‑type Automation 3D Printer CNC Guide Spare Part

LM20 is an open‑type metric standard cylindrical linear ball bearing designed for smooth low‑friction linear movement along 20mm guide shafts. Built‑in circulating ball elements convert sliding friction into rolling friction, delivering precise reciprocating motion performance. Its compact standard dimension makes it widely interchangeable for automation equipment, CNC machines and 3D‑printing devices.

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• Open‑type structure provides good heat dissipation and convenient lubrication
  Low friction coefficient ensures smooth and quiet linear reciprocating movement
  Circulating ball‑circuit design supports continuous long‑stroke motion
  Compact standard size for simple installation and direct replacement
  Plastic cage reduces noise and guarantees stable ball circulation
  High‑strength bearing‑steel construction extends working service life

• CNC automation equipment
  3D printer machinery
  Packaging production machines
  Robotic linear guide assemblies
  Office automation devices
  Precision positioning platforms

*Check matched bearing models to complete your mechanical assembly.

• 30 years professional bearing industry experience
• ISO certified strict quality inspection
• Flexible OEM & private label customization
• 3-5 days fast delivery for stocked bearings
• Full bearing series, universal interchangeable size
• Factory direct price & reliable after-sales service

*Contact us anytime for technical parameter consultation & selection guidance.