61904-2RS1/W64
618 & 619 Series Thin Section Bearings
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61904-2RS1/W64 Bearing Product Overview & Core Advantages
The 61904-2RS1/W64 is a metric single row deep groove ball bearing engineered for precision and reliability in compact spaces. Its key advantage lies in its sealed design with Solid Oil lubrication, providing exceptional protection against contamination and ensuring long-term, maintenance-free operation. This bearing is characterized by its ability to handle primarily radial loads and is manufactured to ABEC 1 precision tolerances, making it an ideal choice for applications demanding consistent performance and high reliability.
61904-2RS1/W64 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Benefit |
|---|---|---|
| 61904 | Standard designation for a deep groove ball bearing series with a 20mm bore, 37mm OD, and 9mm width. | Defines the core bearing dimensions and type. |
| 2RS1 | Bearing is equipped with two (2) contact-type rubber seals (RS) on both sides. | Provides superior sealing, effectively excluding contaminants and retaining lubricant for extended service life. |
| W64 | Indicates the bearing is pre-lubricated with Solid Oil. | Eliminates oil leakage, is suitable for a wide temperature range, and offers a maintenance-free solution. |
61904-2RS1/W64 Bearing Structural Features & Performance Benefits
Robust Sealed Construction: The dual-contact 2RS1 rubber seals provide an effective barrier against dust, moisture, and other particulate contaminants. This design is crucial for maintaining bearing integrity and performance in harsh environments.
Advanced Solid Oil Lubrication: The W64 Solid Oil filling replaces traditional grease, offering significant advantages. It prevents leakage, even at high speeds, and maintains stable lubrication across the specified temperature range of -30°C to 120°C. This results in a truly maintenance-free bearing with a long operational lifespan.
Precision & Load Capacity: Manufactured to ABEC 1 (ISO P0) tolerance class, this bearing ensures smooth and quiet operation. With a dynamic load rating of 1432 lbf and a static load rating of 821 lbf, it is well-suited for applications with moderate radial loads.
High-Speed Capability: The combination of a precision-ground chrome steel construction and effective Solid Oil lubrication allows for a high limiting speed of 26,000 rpm, making it a capable high-speed bearing for its size.
61904-2RS1/W64 Bearing Typical Application Areas
The 61904-2RS1/W64 is ideally suited for a wide range of compact and precision-driven applications, including:
- Small Electric Motors: Used in fans, pumps, and power tools where reliability and low maintenance are critical.
- Precision Instruments and Medical Devices: Ideal for sensitive equipment requiring smooth, quiet, and contamination-free operation.
- Office Automation Equipment: Commonly found in printers, scanners, and copiers.
- Food and Beverage Machinery: The sealed and non-leaking Solid Oil design is advantageous in wash-down environments.
- Automotive Auxiliary Units: Suitable for components like idler pulleys and small alternators.
