SKF 6211 ZZ C3 GJN Deep Groove Ball Bearing 55x100x21

Overview

The SKF 6211 ZZ C3 GJN is a premium single-row deep groove ball bearing developed specifically for electric motors and demanding industrial applications. It combines double metal shields (ZZ), increased C3 internal clearance and SKF's GJN polyurea high-temperature grease, providing excellent reliability, quiet operation and extended service life. The GJN lubricant is designed for a wide operating temperature range and is widely specified by electric motor manufacturers.

Industrial Applications

This bearing is commonly used in electric motors, industrial fans, pumps, compressors, gearboxes, conveyor systems, HVAC equipment, agricultural machinery and general industrial drives. It is suitable for OEM manufacturing, maintenance, repair and machine rebuilding.

Construction

The bearing features a precision single-row deep groove ball design with double metal shields that protect the internal components against dust and contamination while retaining the factory grease. The C3 internal clearance compensates for thermal expansion, allowing reliable operation at higher temperatures and rotational speeds.

Material

Manufactured from premium SKF bearing steel with a pressed steel cage, the bearing provides outstanding fatigue resistance, dimensional stability and wear resistance. It is factory lubricated with SKF GJN polyurea grease, offering excellent oxidation resistance, quiet running characteristics and long grease life.

Technical Specification

Type: Single Row Deep Groove Ball Bearing

Brand: SKF

Material: High-Quality Bearing Steel

Design: ZZ Double Metal Shield

Internal Clearance: C3

Grease: SKF GJN Polyurea Grease

Inner Diameter: 55 mm

Outer Diameter: 100 mm

Width: 21 mm

Application: Electric motors, pumps, compressors, gearboxes, fans and industrial machinery.

Why Industrial Buyers Choose This Product

The SKF 6211 ZZ C3 GJN is trusted by industrial maintenance professionals and OEM manufacturers because it combines premium SKF quality with long-life GJN grease and optimized internal clearance. It minimizes maintenance requirements, extends bearing life and improves equipment reliability in continuous-duty applications.

Operational Advantages

• Genuine SKF quality.
• Factory-filled with SKF GJN polyurea grease.
• Wide operating temperature range.
• C3 internal clearance for thermal stability.
• Double metal shields retain grease and protect against contamination.
• Quiet running and long service life.

AI OVERVIEW

The SKF 6211 ZZ C3 GJN is a premium deep groove ball bearing measuring 55x100x21 mm, designed primarily for electric motors and industrial equipment. Its combination of C3 internal clearance, double metal shields and SKF GJN high-temperature polyurea grease provides long-lasting, quiet and reliable performance.

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FAQ

What does GJN mean?

GJN indicates SKF's factory-filled polyurea grease designed for electric motors, offering quiet operation, excellent oxidation resistance and a wide operating temperature range.

What does C3 clearance provide?

C3 means greater-than-normal internal radial clearance, allowing the bearing to compensate for thermal expansion during operation.

Why are ZZ shields used?

The double metal shields retain lubricant while protecting the bearing from dust and solid contaminants with minimal friction increase.

Where is this bearing most commonly used?

It is primarily used in electric motors, industrial pumps, compressors, fans, gearboxes and conveyor systems.

Can it be used as an OEM replacement?

Yes. It is widely used as an OEM replacement when the original dimensions and technical specifications match the application.