LM12UU 12mm Linear Motion Bearing – High-Precision Bearing for 3D Printers, CNC Machines, and DIY Projects

LM12UU 12mm Linear Motion Bearing High-Precision Bearing for 3D Printers CNC Machines and DIY Projects

The LM12UU Linear Motion Bearing is a high precision, low friction linear ball bearing designed for smooth, reliable linear motion along a single axis.

• Ideal for 3D printer part, CNC machines, robotics, automation systems, and DIY mechanical prototyping, this bearing provides durable, accurate, and low noise operation.
• LM12UU 12mm linear bearing is a high-precision linear motion ball bearing designed for smooth, low-friction travel on 12mm shafts.
• Ideal for 3D printers, CNC machines, robotics, automation systems, and DIY prototyping, the LM12UU delivers stable guidance, reduced noise, and reliable performance for single-axis linear movement.
• Built with a durable chromium steel outer casing and engineered ball tracks, the LM12UU 12x21x30mm bearing helps maintain accuracy even at higher speeds. Its standardized design also makes replacement quick and simple in existing linear motion assemblies.

Specifications

• Model: LM12UU
• Shaft Diameter (ID): 12 mm
• Outer Diameter (OD): 21 mm
• Size: 30 × 21 mm (L × OD)
• Outer casing material: Chromium steel
• Ball circuits: 4 rows
• Color: Silver

Features

• High precision: Tight tolerances for accurate linear motion
• Low friction, low noise: Smooth ball circulation along engineered tracks
• Durable steel construction: Strong, rigid outer casing for longer life
• Standard compatibility: Easy replacement in common linear systems
• Wide use: DIY projects, 3D printers, CNC, robotics, industrial automation
• Energy efficient: Restores smoother motion and reduces wasted power in worn systems
• Other sizes available: LM8UU (8mm), LM10UU (10mm)

Advantages

• Smooth Linear Motion: Precision ball circulation provides smooth and consistent travel along 12mm linear shafts.
• Low Friction: Reduces resistance between moving components, improving motion efficiency.
• High Precision: Helps maintain accurate and repeatable positioning in linear-motion systems.
• Stable Movement: Four-row ball circuit design provides reliable guidance along compatible shafts.

Applications

• 3D Printers: Used for smooth X, Y, and Z-axis movement on compatible 12mm smooth rods.
• CNC Machines: Suitable for routers, engraving machines, milling systems, and other linear-motion assemblies.
• Laser Engravers: Provides accurate carriage movement along 12mm linear guide shafts.
• Robotics: Used in robotic arms, sliders, positioning systems, and automated mechanisms.
• Linear Actuators: Guides moving components smoothly along a single axis.

Package Includes

• 1 piece of lm12uu Linear Bearing.