604 2rs
600 Series Miniature Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Ball & Washer Dimensions
Performance
Materials
Environment & Compliance
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604 2rs Bearing Product Overview & Core Advantages
The 604 2RS is a metric single row deep groove ball bearing designed for exceptional reliability in compact applications. Its key advantage lies in its integral rubber seals (2RS) on both sides, providing superior protection against contamination while retaining lubricant. This sealed bearing is engineered to handle primarily radial loads and offers a robust, maintenance-free solution. Manufactured with chrome steel rings and balls, it delivers consistent performance and long service life, making it ideal for applications demanding high precision and durability within its operational envelope.
604 2rs Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 604 | Basic Bearing Code | Denotes a metric, single row deep groove ball bearing with a 4mm bore, 12mm OD, and 4mm width. |
| 2RS | Contact Rubber Seals (Both Sides) | Provides excellent sealing effectiveness against dust, moisture, and other contaminants. The contact design offers superior protection compared to non-contact shields, ensuring long-term lubricant integrity and bearing life. |
604 2rs Bearing Structural Features & Performance Benefits
Optimized Deep Groove Raceway: The deep groove geometry on both inner and outer rings is fundamental for handling radial loads efficiently. This design also allows the bearing to accommodate moderate axial loads in both directions, adding to its versatility.
Robust Sealing System: The dual Nitrile Rubber (NBR) seals (2RS) are a critical feature. They make the bearing pre-lubricated and effectively sealed for life, eliminating the need for re-lubrication and protecting the internal components in harsh environments. This contributes directly to reduced maintenance requirements.
Precision Construction: Built to ABEC1 tolerance class, this bearing ensures smooth and quiet operation with minimal vibration. The stainless steel cage reliably spaces and guides the seven precision chrome steel balls, providing stability and contributing to the bearing's limiting speed of 48,000 rpm.
Controlled Internal Clearance: The specified MC3 radial internal clearance (0.002mm to 0.013mm) is optimized for general operating conditions, ensuring proper fit and performance without excessive play or preload.
604 2rs Bearing Typical Application Areas
The 604 2RS bearing is a versatile component suited for a wide range of small, high-speed, and sealed applications, including:
- Small Electric Motors: Ideal for spindle motors in consumer electronics, cooling fans, and small power tools.
- Precision Instruments: Used in optical encoders, medical devices, and gauges where reliability and low noise are critical.
- Office Automation Equipment: Found in printers, scanners, and copiers.
- Automotive Auxiliary Units: Suitable for small pumps, actuators, and idler pulleys within its temperature range.
- Radio Control Models and Drones: Used in motors and gearboxes due to its compact bearing size and weight.
