628 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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628 2rs Bearing Product Overview & Core Advantages
The 628 2RS is a metric single row deep groove ball bearing designed for exceptional reliability in demanding applications. This sealed bearing features robust construction with chrome steel rings and balls, providing high resistance to wear and fatigue. Its primary advantage lies in its ability to handle significant radial loads while the integrated 2RS double seals effectively protect against contamination, ensuring long service life and reduced maintenance. With a standard ABEC1 tolerance, it offers consistent performance for a wide range of industrial uses where cost-effectiveness and durability are paramount.
628 2rs Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 628 | Basic Bearing Series | Denotes a standard metric deep groove ball bearing with 8mm bore, 24mm OD, and 8mm width. |
| 2RS | Double Contact Seals (Nitrile Rubber) | Provides effective sealing on both sides against dust, dirt, and moisture. The contact design offers superior protection compared to non-contact shields, making it suitable for contaminated environments. |
628 2rs Bearing Structural Features & Performance Benefits
- Deep Groove Raceway & Single Row Design: Optimized for high radial load capacity, while also capable of accommodating moderate axial loads in both directions.
- Double Seals (2RS): The nitrile rubber seals running on the inner ring land create an effective barrier, retaining lubricant and excluding contaminants. This significantly extends bearing life and enables maintenance-free operation in many applications.
- Stainless Steel Cage: Ensures cage integrity and reliable ball guidance, contributing to smooth operation and high limiting speed (28,000 rpm).
- Standard Internal Clearance (MC3/C0): The specified radial internal clearance (0.002mm to 0.013mm) is suitable for most common operating conditions, providing stable performance with minimal heat generation.
- Pre-lubricated: Comes with a standard grease fill, ready for immediate installation and operation within its specified temperature range of -30°C to 110°C.
628 2rs Bearing Typical Application Areas
The 628 2RS bearing is a versatile component found in a wide array of equipment and industries, including:
- Electric Motors (Small to medium-sized)
- Power Tools
- Automotive Components (e.g., alternators, fans, pumps)
- Conveyor Systems (Idler rollers, guide rollers)
- Agricultural Machinery
- Ventilation Fans & Blowers
- Medical Equipment (Low to medium-speed devices)
- Office Machinery & Appliances
