Description
Product Overview
The FOCMKEAS LMF12UU linear roller bearing is engineered for high‑precision linear motion. Featuring a 12mm inner diameter, 21mm outer diameter and 30mm length, the bearing incorporates four rows of steel balls that provide point contact for minimal friction. Constructed from hardened carbon steel and finished with a high‑frequency quenching process, it delivers exceptional wear resistance and impact strength. Dual rubber seals protect the internal lubricant from dust, water and other contaminants, ensuring reliable operation in harsh environments.
![[Product front view showing all components]](https://www.lenvexa.store/wp-content/uploads/2026/06/8d42f9a574364d91bf7dca6b52700d26.jpg)
Usage
This bearing is ideal for CNC slide tables, 3D printing machine parts, mechanical slides, and linear modules in automated equipment. Its robust design handles dynamic loads up to 770N and static loads up to 1170N, making it suitable for industrial tables, robotic arms, and precision tooling where smooth, repeatable motion is critical.
Why Choose Us
FOCMKEAS combines decades of bearing expertise with rigorous quality control. Each bearing undergoes dimensional inspection and load testing to meet strict industry standards. Our double‑seal design extends service life, while the carbon‑steel material ensures consistent performance even under heavy loads and temperature variations. Backed by responsive customer support, we provide technical assistance and warranty coverage for peace of mind.
Key Features
- High‑hardness carbon steel delivers long‑lasting durability and wear resistance.
- Double rubber seals keep out dust and moisture, maintaining smooth operation.
- Four‑row steel ball design reduces friction for precise linear movement.
- Compact 12×21×30mm size fits a wide range of machinery and equipment.
- Dedicated after‑sales support and warranty ensure reliable service.
FAQ
What is the load capacity of this bearing?
The LMF12UU can handle a dynamic load of 770 N and a static load of 1,170 N, suitable for most industrial linear applications.
Can this bearing be used in humid environments?
Yes, the double rubber seals protect the internal components from moisture, making it reliable in humid or dusty conditions.
Is installation tool‑free?
The bearing includes a 4.5 mm installation aperture and can be mounted with standard bearing presses or hand tools without special equipment.
What maintenance is required?
Periodic cleaning of the seal area and re‑lubrication according to the manufacturer’s schedule will keep the bearing operating optimally.
Do you offer technical support for integration?
Our engineering team provides guidance on mounting, alignment, and performance optimization for all supported applications.
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