NSK R8ZZCM AS2S

NSK R8ZZCM AS2S Deep Groove Ball Bearing

Description

The NSK R8ZZCM AS2S is a high-performance, single-row deep groove ball bearing designed for reliability and long service life. Manufactured in Japan, this bearing features double metal shields for excellent protection against dust and debris, making it suitable for a wide range of industrial applications. The special ‘CM’ designation ensures low-noise and low-vibration operation, which is critical for electric motors and precision equipment.

Specifications

• Bore Diameter: 12.7 mm (1/2 inch)
• Outer Diameter: 28.575 mm (1-1/8 inch)
• Width: 7.938 mm (5/16 inch)
• Bearing Series: R8
• Seals: ZZ – Double Metal Shields
• Clearance: CM – Electric Motor Clearance
• Grease: AS2S – Factory lubricated with special grease

Label Info

• Manufacturer: NSK Ltd.
• Part Number: R8ZZCM AS2S

Application

This bearing is ideal for applications requiring high rotational speeds and precision, including electric motors, power tools, fans, pumps, and other small machinery.

Country of Origin

Made in Japan

CO2 Impact

Choosing this component saves approximately 0.1 kg of CO2 compared to a new production. This sustainable choice supports a circular economy and reduces industrial waste.

Availability

This item is in stock and ready for immediate dispatch. Order now from spareparts2day for expert support and fast delivery.

FAQ

What does the ‘ZZ’ suffix mean on this bearing?

The ‘ZZ’ suffix indicates that the bearing is fitted with non-contact metal shields on both sides. These shields help to retain lubricant and protect the bearing’s interior from larger contaminants without increasing rotational friction.

What is the significance of the ‘CM’ and ‘AS2S’ codes?

‘CM’ refers to a specific internal clearance and raceway finish that results in low noise and vibration, making it ideal for electric motor applications. ‘AS2S’ designates a particular type of NSK grease and special internal specifications for enhanced performance.

Is this bearing pre-lubricated and ready for installation?

Yes, the NSK R8ZZCM AS2S comes pre-lubricated from the factory with high-quality AS2 grease, designed for a long service life under normal operating conditions. It is ready for immediate installation.

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Last Update: Friday, March 13, 2026