KOYO 608 ZZ CM 8x22x7 mm Ball Bearing

Technical specifications and design

The KOYO 608 ZZ CM is a miniature deep-groove ball bearing with inner diameter 8 mm, outer diameter 22 mm and width 7 mm. It features metal shields on both sides (“ZZ”) for enhanced protection against contaminants and lubricant retention, and a special CM internal clearance class optimized for high-speed electric motors and precision assemblies. The construction offers extremely low friction, high rotational accuracy and long service life in demanding environments. This bearing can be integrated into various bearing housing units or used as a standalone bearing element, providing reliable performance in compact applications.

Industrial applications & B2B benefits

Designed for industrial applications such as motor drives, automation systems, miniature gearboxes and compact bearing housings, the KOYO 608 ZZ CM 8x22x7 mm ball bearing delivers:

• High durability - precise steel quality and optimized clearance ensure extended service life, reducing downtime and maintenance costs.

• Seamless integration as a bearing unit or part of a bearing housing, particularly where space is limited and performance requirements are high.

• Compatibility with high-speed operations thanks to the CM clearance class, which supports stable rotation and minimal vibration.

• Standardized 8x22x7 mm size and a recognised brand simplify procurement and streamline supply chain management for B2B buyers.

This bearing addresses the needs of engineers and procurement teams seeking compact yet robust components for industrial systems that demand reliability, precision and fast fulfilment.

FAQ

Q: What does the “ZZ” designation mean in KOYO 608 ZZ CM?
A: “ZZ” denotes metal shields on both sides of the bearing. These shields protect the internal components from dust and fine particles, retain lubricant inside the bearing and contribute to longer operational life in industrial environments.

Q: What is the “CM” clearance class?
A: “CM” refers to a special internal clearance class used for electric motors and high-speed applications. It offers tighter tolerance than standard clearance types, ensuring better stability, lower vibration and quieter operation under elevated speeds.

Q: Can the bearing support axial as well as radial loads?
A: The bearing is primarily designed to carry radial loads, but thanks to the deep-groove geometry, it can handle limited axial loads when mounted appropriately. Performance in axial direction depends on load distribution and bearing housing design.

Q: Why choose the 8x22x7 mm dimension?
A: The 8x22x7 mm size is widely used in miniature rotational assemblies and precision applications. Its standardized dimension allows easy replacement and integration into existing systems, facilitating efficient procurement and inventory management in B2B operations.