KOYO 6205 2RS C3 Deep Groove Ball Bearing (25x52x15 mm)

Applications of the KOYO 6205 2RS C3 Bearing

The KOYO 6205 2RS C3 (25x52x15 mm) is a premium-quality deep groove ball bearing designed for use in high-performance industrial and automotive applications. It delivers quiet operation, low friction, and long service life, making it a top choice for electric motors, gearboxes, pumps, conveyors, and agricultural machinery.
Thanks to its C3 internal clearance, this bearing can operate at higher speeds and temperatures without compromising precision, while the double rubber seals (2RS) ensure excellent protection from contamination and moisture.

Features and Advantages

The KOYO 6205 2RS C3 is part of the brand’s precision-engineered bearing line, known for exceptional durability, dimensional accuracy, and smooth rotation.

Key features:

• 2RS Sealing (Double Rubber Seal): shields the bearing interior from dirt, dust, and water for long-lasting reliability.

• C3 Internal Clearance: accommodates thermal expansion and allows stable operation at higher speeds.

• High-grade Bearing Steel: ensures superior load-carrying capacity and resistance to wear.

• Pre-lubricated with high-performance grease: ready to install and maintenance-free.

• Interchangeable dimensions: fully compliant with ISO standards, compatible with equivalent models from SKF, NSK, FAG, NTN, and NACHI.

This bearing’s design ensures consistent performance in demanding environments, where precision, vibration control, and resistance to mechanical stress are essential.

Technical Specifications

• Type: Single-row deep groove ball bearing

• Model: KOYO 6205 2RS C3

• Dimensions: 25 x 52 x 15 mm

• Sealing: 2RS (Double Rubber Sealed)

• Internal Clearance: C3 (Increased)

• Material: Hardened bearing steel

• Lubrication: Factory pre-lubricated, maintenance-free

• Brand: KOYO - Japan

FAQ - Common Questions

1. What does “C3” mean in the KOYO 6205 2RS C3 bearing?
C3 indicates greater internal clearance, allowing better performance at higher temperatures and speeds.

2. Is the 6205 2RS C3 bearing suitable for electric motors?
Yes. It’s widely used in electric motors and drives, offering quiet, low-friction operation and extended service life.

3. Can this bearing replace SKF or NTN models?
Yes. The KOYO 6205 2RS C3 follows ISO dimensional standards, making it fully interchangeable with bearings from major brands.

4. Is the bearing sealed against moisture and dust?
Yes. The double rubber seals (2RS) provide effective protection against contamination and moisture ingress.

5. Does it require additional lubrication after installation?
No. The bearing is factory pre-lubricated and designed for long-term maintenance-free operation.