LMK…UU Square-Flanged Linear Bearing

The LMK…UU Series Square Flange Linear Bearing is engineered for smooth, accurate, and low-friction linear motion along hardened guide shafts.
Its square flange design allows direct mounting onto flat machine surfaces, providing excellent rigidity and easy installation in compact or restricted spaces.
Designed with precision-ground raceways and hardened chrome steel balls, the LMK…UU bearing provides stable linear guidance, high load capacity, and reliable long-term performance, making it suitable for both light-duty precision equipment and heavy industrial systems.
This series is fully compatible with standard optical shafts and linear motion systems used in automation machinery.

Description

Product Overview
The LMK…UU Series Square Flange Linear Bearing is engineered for smooth, accurate, and low-friction linear motion along hardened guide shafts.
Its square flange design allows direct mounting onto flat machine surfaces, providing excellent rigidity and easy installation in compact or restricted spaces.
Designed with precision-ground raceways and hardened chrome steel balls, the LMK…UU bearing provides stable linear guidance, high load capacity, and reliable long-term performance, making it suitable for both light-duty precision equipment and heavy industrial systems.
This series is fully compatible with standard optical shafts and linear motion systems used in automation machinery.

Key Features
Square Flange for Face-Mount Installation
The LMK flange allows fast and secure installation onto equipment frames, improving system rigidity.
High Precision Linear Motion
Manufactured with precision-ground raceways, ensuring smooth travel, low noise, and minimal friction.
Durable and Long Service Life
Constructed from hardened GCr15 bearing steel for excellent wear resistance, even in demanding environments.
Compact, Rigid Design
Square flange offers strong support for linear shafts, ideal for CNC tools and automation modules.
Wide Size Options
Available from 6mm to 60mm, suitable for small laboratory devices to large industrial machinery.

Typical Applications
LMK…UU linear bearings are widely used in:
CNC machining centers and milling machines
Automatic industrial equipment
Linear motion modules and actuator systems
3D printers and laser cutting machines
Packaging equipment and cutting mechanisms
Pick-and-place robots and assembly lines
Precision measuring instruments
Educational machinery and DIY automation systems

Why Choose Our LMK…UU Series?
Manufactured with high precision and strict quality standards
Hardened bearing steel ensures long service life
Smooth motion with low friction and low noise
Full metric series available with consistent quality
Supports OEM customization (size, flange material, seals, tolerance)
Cost-effective linear motion solution for industrial and commercial equipment

Additional information

Available Sizes

LMK6UU, LMK8UU, LMK10UU,LMK12UU, LMK13UU, LMK16UU,LMK20UU, LMK25UU, LMK30UU,LMK35UU, LMK40UU, LMK50UU,LMK60UU

Material Composition

Bearing Sleeve: High-carbon chromium bearing steel GCr15 / SUJ2 / 100Cr6, hardened to HRC 58–64
Steel Balls: Precision chrome steel GCr15, grade G10–G40
Retainer Cage: High-strength polymer PA66 / POM
Seals: Oil-resistant NBR or reinforced POM
Square Flange Housing: Aluminum alloy AL6061 / AL6063 or carbon steel (depending on size and model)

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