W 628/9-2Z
W Series Stainless Steel Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
W 628/9-2Z
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.0042 kg
Tolerance class
P0
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
9 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
17 mm
Outside diameter tolerance
-0.008mm to 0
Width
5 mm
Width tolerance
-0.12mm to 0
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
171 lbf
Radial static load rating
75 lbf
Limiting speed
43 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:
$ 11.21
/ each
In Stock
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
W 628/9-2Z Bearing Product Overview & Core Advantages
The W 628/9-2Z is a single row deep groove ball bearing designed for high-performance applications requiring reliability and precision. Constructed entirely from stainless steel, it offers excellent corrosion resistance. Its key advantage lies in its ability to handle significant radial loads, making it a compact and robust solution for various mechanical systems. The inclusion of shielded seals (2Z) and pre-applied grease lubrication ensures long-term, maintenance-free operation within its specified temperature range, providing a dependable and durable bearing solution.
W 628/9-2Z Bearing Model Code Explained, Specifications & Naming Convention
The model designation W 628/9-2Z can be broken down as follows:
- W 628/9: Indicates the basic bearing series and size designation (9mm bore).
- 2Z: Denotes that the bearing is equipped with non-contact shields on both sides. This provides effective protection against contamination while minimizing friction, contributing to the bearing's high limiting speed.
W 628/9-2Z Bearing Structural Features & Performance Benefits
- Robust Construction: Manufactured from stainless steel rings, balls, and cage, this bearing delivers superior corrosion resistance and is suitable for demanding environments.
- Radial Load Capacity: The deep groove raceway and optimized geometry are engineered to support high radial dynamic and static load ratings, ensuring stable performance under load.
- High-Speed Performance: The combination of non-contact shields (2Z) and a stainless steel cage minimizes friction and allows for a high limiting speed of 43,000 rpm, making it suitable for high-rotation applications.
- Maintenance-Free Operation: The shielded design retains the factory-applied grease lubrication, protecting the internal components from contaminants and providing long-lasting, maintenance-free service life.
W 628/9-2Z Bearing Typical Application Areas
This bearing is ideally suited for applications where compact size, corrosion resistance, and reliable performance are critical. Common uses include:
- Small Electric Motors and Gearboxes
- Medical and Dental Equipment
- Precision Instruments and Optical Devices
- Food Processing and Packaging Machinery
- Office Automation Equipment
