W 628/5-2Z
W Series Stainless Steel Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
W 628/5-2Z
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.0015 kg
Tolerance class
P0
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
5 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
11 mm
Outside diameter tolerance
-0.008mm to 0
Width
4 mm
Width tolerance
-0.12mm to 0
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
91 lbf
Radial static load rating
32 lbf
Limiting speed
60 X 1000 rpm
Lubrication
Grease
Radial internal clearance
CN
Materials
Ring material
Stainless Steel
Ball material
Stainless Steel
Cage material
Stainless Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 11.52
/ each
In Stock
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W 628/5-2Z Bearing Product Overview & Core Advantages
The W 628/5-2Z is a metric single row deep groove ball bearing designed for high-performance applications requiring compact dimensions and reliable operation. Engineered from stainless steel and featuring integral shields (2Z), this bearing excels in handling radial loads and offers protection against contamination. Its pre-lubricated design ensures immediate operation and long service life, making it an ideal choice for applications demanding corrosion resistance, low maintenance, and consistent performance within a wide temperature range.
W 628/5-2Z Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| W 628/5 | Basic bearing designation, indicating a single row deep groove ball bearing with a 5 mm bore diameter. |
| -2Z | Signifies that the bearing is equipped with non-contact shields on both sides. This provides effective protection against solid contaminants while minimizing friction, contributing to the bearing's high limiting speed. |
W 628/5-2Z Bearing Structural Features & Performance Benefits
- Robust Construction: Manufactured entirely from stainless steel (rings, balls, and cage), this bearing offers excellent corrosion resistance and is suitable for harsh environments.
- Optimized Load Capacity: The deep groove raceway geometry is engineered to support significant radial dynamic load ratings (91 lbf), ensuring reliable performance under demanding conditions.
- High-Speed Capability: The combination of a low-friction stainless steel cage and non-contact shields (2Z) allows for a high limiting speed of 60,000 rpm, making it a capable high-speed bearing.
- Maintenance-Free Operation: The bearing is pre-lubricated with grease and sealed with shields, creating a closed system that is protected from contamination and does not require re-lubrication, reducing lifecycle costs.
- Precision Dimensions: Manufactured to P0 tolerance class and standard CN radial internal clearance, ensuring consistent performance and ease of installation in precision assemblies.
W 628/5-2Z Bearing Typical Application Areas
This versatile miniature bearing is ideally suited for a wide range of compact and precision-driven applications, including:
- Small Electric Motors (e.g., in drones, power tools, miniature fans)
- Precision Instruments and medical devices
- Office Automation Equipment (printers, scanners)
- Radio-Control Models and hobbyist machinery
- Food processing and chemical industry equipment where corrosion resistance is critical
