627 (R 7)
6000, 6200 & 6300 Series Metric Standard Ball Bearings
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Basic Information
Main Dimensions
Performance
Materials
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627 (R 7) Bearing Product Overview & Core Advantages
The 627 is a metric single row deep groove ball bearing designed for high-performance applications requiring reliable radial load support. Manufactured to ABEC 1 | ISO P0 tolerance standards, this open-type bearing offers a compact design with a 7 mm bore, 22 mm outside diameter, and 7 mm width, making it ideal for space-constrained assemblies. Its construction from high-grade chrome steel ensures durability and consistent operation within a temperature range of -30°C to 120°C. The bearing is ROHS and REACH compliant, meeting modern environmental standards.
627 (R 7) Bearing Model Code Explained, Specifications & Naming Convention
| Suffix / Prefix | Technical Meaning |
|---|---|
| 627 | Basic model number indicating a single row deep groove ball bearing with standard metric dimensions. |
| Open (No Seal) | No contact seals or shields. Allows for higher speeds and permits external lubrication systems, but requires a clean operating environment. |
| CN Clearance | Standard radial internal clearance for normal operating conditions. |
| ABEC 1 | ISO P0 | Standard tolerance class, suitable for most general industrial applications. |
627 (R 7) Bearing Structural Features & Performance Benefits
- Optimized for Radial Loads: The single row deep groove raceway geometry is engineered to efficiently support radial dynamic load ratings of 629 lbf and radial static load ratings of 248 lbf.
- High-Speed Capability: The open design and precision-ground chrome steel components contribute to a high limiting speed of 30,000 rpm.
- Robust Construction: All core components—rings, balls, and the pressed steel cage—are made from chrome steel, providing high hardness, wear resistance, and long service life.
- Precision & Consistency: Manufactured to standard tolerances and CN radial clearance, ensuring reliable performance and ease of integration into various assemblies.
- Lightweight Design: Weighing only 12.7 grams, it contributes to reduced overall system inertia.
627 (R 7) Bearing Typical Application Areas
The 627 bearing is widely used in applications requiring compact size and reliable radial load support, including:
- Small Electric Motors
- Precision Instruments and Gauges
- Office Automation Equipment (e.g., printers, scanners)
- Light-Duty Gearboxes and Transmissions
- Computer Cooling Fans
- Medical Devices
- Various Light Industrial Machinery
