SKF 6211 C4 55x100x21 - Deep Groove Ball Bearing

Applications

The SKF 6211 C4 deep groove ball bearing (55 x 100 x 21 mm) is a precision-engineered component designed for high-speed and high-load industrial applications.
It is widely used in electric motors, gearboxes, pumps, fans, compressors, and conveyor systems, where low friction, high performance, and long service life are crucial.
Its versatility makes it suitable for both radial and moderate axial loads, ensuring smooth operation even in demanding environments such as manufacturing plants, automation systems, and heavy machinery.

Advantages

• C4 internal clearance - provides extra space between rolling elements and raceways, ideal for high-temperature and high-speed conditions.

• High durability and load capacity - made from premium SKF bearing steel with superior heat treatment for longer lifespan.

• Low friction coefficient - ensures quiet, energy-efficient operation and reduced wear.

• Precision machining - guarantees smooth rotation, dimensional accuracy, and easy installation.

• Maintenance-friendly - compatible with standard lubricants and sealing systems, suitable for continuous operation.

Technical Specifications

• Brand: SKF

• Type: Deep groove ball bearing, single row

• Dimensions: 55 mm (inner Ø) x 100 mm (outer Ø) x 21 mm (width)

• Internal clearance: C4 (increased)

• Dynamic load rating (Cr): ~46.2 kN

• Static load rating (Cor): ~29 kN

• Limiting speed: up to 9 000 rpm

• Material: High-grade chrome bearing steel

• Design: Open type (no seals), optimized for high speed and minimal friction

• Applications: Industrial motors, agricultural equipment, power transmission systems, heavy-duty conveyors

Product Description

The SKF 6211 C4 deep groove ball bearing is engineered for precision, reliability, and long-term performance.
Its single-row construction allows for smooth operation at high rotational speeds while handling both radial and axial loads effectively.
The C4 clearance provides additional flexibility, accommodating thermal expansion and shaft deflection in demanding environments.

Manufactured with SKF’s renowned quality standards, this bearing offers consistent performance, reduced maintenance, and minimal downtime — all essential features in professional industrial applications.
Whether used in OEM production or equipment maintenance, SKF 6211 C4 ensures optimal balance between load capacity, running accuracy, and thermal stability.

FAQ

1. What does the “C4” clearance mean?
C4 indicates greater internal clearance, allowing the bearing to operate effectively under high speed or elevated temperature conditions.

2. Can this bearing handle axial loads?
Yes — while primarily designed for radial loads, it also supports moderate axial forces in both directions.

3. What is the difference between 6211 C4 and 6211 C3?
The C4 version offers slightly more internal clearance than C3, making it better for high-speed or high-temperature operations.

4. Is this bearing suitable for electric motors?
Absolutely. The SKF 6211 C4 is one of the most popular bearings for electric motors, fans, and pumps.

5. How should it be maintained?
Use high-quality grease, ensure proper alignment, and avoid over-tightening the fit — these factors significantly extend service life.