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

Applications of the KOYO 6205 2RS FG Bearing

The KOYO 6205 2RS FG (25x52x15 mm) is a single-row deep groove ball bearing designed for industrial and automotive applications where precision, durability, and maintenance-free operation are essential. The bearing features double rubber seals (2RS) for superior protection against dust, water, and contaminants, ensuring long service life even in harsh environments.

The FG designation (Factory Greased) indicates that this bearing is pre-lubricated with a high-quality, heat-resistant grease — ready for installation and long-term operation without additional maintenance. It’s widely used in electric motors, pumps, conveyors, gearboxes, and agricultural machinery, where consistent performance and low friction are critical.

Key Features and Advantages

The KOYO 6205 2RS FG deep groove ball bearing offers excellent running accuracy, smooth rotation, and reduced vibration. As part of KOYO’s premium bearing line, it ensures high reliability, superior wear resistance, and long operational life.

Main features:

• 2RS Sealing System: Dual rubber seals keep out dirt and moisture, extending bearing life.

• FG (Factory Greased): Pre-lubricated with long-life, high-temperature grease - no need for re-lubrication.

• High-grade bearing steel: Provides excellent strength and resistance to wear and fatigue.

• Low noise & vibration: Ideal for electric motors and precision drives.

• Interchangeable dimensions: Matches ISO standards and fits equivalents from SKF, FAG, NTN, NSK, and SNR.

With its high-speed capability and low friction coefficient, this bearing ensures consistent performance and reduced energy consumption in both light and heavy-duty applications.

Technical Specifications

• Type: Single-row deep groove ball bearing

• Model: KOYO 6205 2RS FG

• Dimensions: 25 x 52 x 15 mm

• Sealing: 2RS - Double Rubber Seal

• Lubrication: FG - Factory Greased (High-temp grease)

• Material: High-carbon chromium steel

• Internal Clearance: Standard

• Manufacturer: KOYO (Japan)

FAQ - Frequently Asked Questions

1. What does “FG” mean in KOYO 6205 2RS FG?
FG stands for Factory Greased, meaning the bearing is pre-filled with a high-performance grease designed for extended service life.

2. Can this bearing be used in electric motors?
Yes, the 6205 2RS FG model is ideal for electric motors, offering quiet, smooth operation with minimal friction.

3. Is it interchangeable with SKF or FAG equivalents?
Yes, it meets ISO dimensional standards and can replace equivalent bearings from SKF, FAG, NTN, NSK, and others.

4. Does it require maintenance or lubrication after installation?
No, the bearing is sealed and pre-lubricated — ready for use with no further servicing required.

5. What industries commonly use this bearing?
This model is widely applied in industrial machinery, agricultural equipment, automotive systems, and mechanical drives.