627-Z
6000, 6200 & 6300 Series Metric Standard Ball Bearings
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Basic Information
Main Dimensions
Performance
Materials
Environment & Compliance
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627-Z Bearing Product Overview & Core Advantages
The 627-Z is a metric single row deep groove ball bearing designed for high-performance applications requiring precision and reliability. This shielded bearing excels in handling radial loads efficiently while offering protection against contamination. Its compact design, featuring a 7 mm bore and 22 mm outside diameter, makes it ideal for space-constrained assemblies. Manufactured with chrome steel rings and balls, coupled with a stainless steel cage, it delivers excellent durability and consistent operation. The bearing comes pre-lubricated with grease and is compliant with ROHS and REACH standards, ensuring both performance and environmental responsibility.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 627 | Basic bearing series designation, indicating a metric deep groove ball bearing with specific dimensional characteristics (7mm bore, 22mm OD, 7mm width). |
| -Z | Signifies a non-contact shield on one side of the bearing. This provides effective protection against dust and debris while minimizing friction and heat generation, contributing to the high limiting speed. |
627-Z Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to P6 tolerance class with a CN radial internal clearance, ensuring precise running accuracy and stable operation under load, which is critical for applications requiring minimal vibration and runout.
- Optimized Load Capacity: The deep groove raceway and robust construction enable it to handle significant radial dynamic load ratings (776 lbf) and static load ratings (308 lbf), providing reliable performance in demanding conditions.
- Enhanced Speed Performance: The combination of the low-friction stainless steel cage, optimized grease lubrication, and a non-contact shield allows for a high limiting speed of 45,000 rpm, making it suitable for high-speed applications.
- Long Service Life & Low Maintenance: The pre-applied grease and effective shielded design help retain lubrication and exclude contaminants, promoting a long, maintenance-free service interval within the specified temperature range of -30°C to 120°C.
627-Z Bearing Typical Application Areas
The 627-Z bearing is widely used in various precision mechanisms and industrial equipment, including:
- Small Electric Motors (e.g., for power tools, cooling fans)
- Precision Instruments and optical devices
- Office Automation Equipment such as printers and scanners
- Medical Devices requiring quiet and reliable operation
- Textile Machinery spindles and other high-speed components
