6904 2rs
6900 Series Thin Section Bearings
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Basic Information
Main Dimensions
Performance
Materials
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6904 2rs Bearing Product Overview & Core Advantages
The 6904 2RS is a single row deep groove ball bearing designed for reliable performance in demanding applications. This metric bearing features integrated sealing (2RS) and is engineered to primarily handle radial loads. Its compact design, with a 20 mm bore and 37 mm outside diameter, makes it an excellent choice for applications requiring a space-saving solution without compromising on load capacity or durability. Manufactured to ABEC-1 precision tolerances, it ensures consistent operation and is pre-lubricated for immediate installation and long service life.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 6904 | Basic bearing designation, indicating a single row deep groove ball bearing with a 20 mm bore and 37 mm outside diameter. |
| 2RS | Denotes contact seals on both sides of the bearing. The RS seal provides effective protection against contaminants and retains lubricant, enhancing bearing life in harsh environments. |
6904 2rs Bearing Structural Features & Performance Benefits
Robust Construction & Material Quality: The bearing rings and balls are manufactured from high-carbon chrome steel, providing excellent hardness and wear resistance. The stainless steel cage ensures dimensional stability and corrosion resistance, contributing to smooth operation at the limiting speed of 22,000 rpm.
Sealed & Pre-Lubricated Design: The 2RS seals are a key feature, offering superior protection against dust, moisture, and other contaminants. This sealed construction, combined with factory-applied lubrication, makes the bearing virtually maintenance-free for the majority of its service life, reducing downtime and operational costs.
Precision & Load Capacity: Built to ABEC-1 tolerance class with a C0 radial internal clearance (0.006mm to 0.020mm), this bearing delivers consistent and precise rotation. It offers a dynamic load rating of 1436 lbf and a static load rating of 828 lbf, making it capable of handling significant radial loads in a compact form factor.
6904 2rs Bearing Typical Application Areas
The 6904 2RS is versatile and finds use in a wide range of industries and equipment, including:
- Electric Motors and Small Gearboxes
- Industrial Fans and Blowers
- Conveyor System Idler Rolls
- Agricultural Machinery
- Automotive Components (e.g., alternators, water pumps)
- Food Processing and Packaging Machinery
