ZEN SMR 85 Ball Bearing 5x8x2

Applications - Micro and Precision Systems

The ZEN SMR 85 ball bearing 5x8x2 is a miniature single-row deep groove ball bearing designed for compact mechanical assemblies. With its ultra-small dimensions, it is commonly used in micro motors, medical devices, robotics, instrumentation, electronics, and light industrial applications where precision and smooth rotation are critical.

Its compact geometry allows integration into tight spaces without compromising rotational stability. The bearing can operate as an independent component or as part of a small bearing unit installed within a precisely machined bearing housing.

Advantages - Compact Design and High Precision

Manufactured by ZEN, the SMR 85 offers reliable dimensional accuracy and stable internal geometry. As a deep groove ball bearing, it supports radial loads and small axial loads while maintaining low friction and quiet operation.

The lightweight construction reduces rotating mass, enabling efficient performance at higher speeds. Its optimized raceway profile ensures balanced load distribution and extended service life, even in continuous micro-mechanical applications. The result is high durability and dependable operation in precision assemblies.

Technical Data

• Model: SMR 85

• Brand: ZEN

• Type: Miniature deep groove ball bearing

• Inner diameter: 5 mm

• Outer diameter: 8 mm

• Width: 2 mm

• Load type: Radial and light axial loads

• Application: Micro motors, electronics, precision equipment

Main Description

The ZEN SMR 85 ball bearing 5x8x2 is engineered for high-precision environments where space limitations and rotational accuracy are key factors. Its deep groove configuration provides stable shaft guidance and smooth movement under light load conditions.

Thanks to precise manufacturing tolerances, this miniature ball bearing delivers consistent performance in small electric motors, optical devices, laboratory equipment, and automated systems. When mounted in a properly matched bearing housing, it forms a compact bearing unit capable of reliable operation in delicate mechanical assemblies.

The SMR 85 is frequently selected by OEM manufacturers, maintenance specialists, and design engineers seeking a dependable miniature bearing solution that ensures smooth motion, reduced vibration, and long service life.

FAQ - Frequently Asked Questions

Is the SMR 85 suitable for high-speed applications?
Yes, its small size and low rotating mass allow operation at high speeds in micro systems.

What loads can this bearing support?
It supports radial loads and light axial loads.

Is it suitable for electronic devices?
Yes, it is commonly used in electronics and precision instruments.

Does it require lubrication?
Miniature bearings are typically pre-lubricated, but lubrication type depends on application requirements.

Can it be installed in a bearing housing?
Yes, it can operate independently or as part of a small bearing unit.