W 628/7-2Z
W Series Stainless Steel Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
W 628/7-2Z
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.0028 kg
Tolerance class
P0
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
7 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
14 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
149 lbf
Radial static load rating
58 lbf
Limiting speed
50 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:
$ 2.33
/ each
In Stock
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W 628/7-2Z Bearing Product Overview & Core Advantages
The W 628/7-2Z 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 while operating at high speeds. The inclusion of shielded seals (2Z) and pre-applied grease lubrication ensures long-term, maintenance-free operation, making it an ideal choice for compact and demanding environments.
W 628/7-2Z Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| W 628/7 | Basic bearing designation, indicating a metric, single row deep groove ball bearing with a 7 mm bore. |
| 2Z | Signifies shielded seals on both sides. This provides effective protection against contamination while allowing for high-speed operation. |
W 628/7-2Z Bearing Structural Features & Performance Benefits
- Robust Construction: The single row deep groove raceway and stainless steel construction (rings, balls, cage) provide high corrosion resistance and durability, suitable for harsh environments.
- High-Speed Capability: The optimized design and shielded seals contribute to a high limiting speed of 50,000 rpm, making it a true high-speed bearing.
- Maintenance-Free Operation: The combination of non-contact shields (2Z) and pre-applied grease creates a sealed-for-life unit, eliminating the need for relubrication and reducing lifecycle costs.
- Precision & Reliability: Manufactured to P0 tolerance class and standard CN radial internal clearance, this bearing ensures consistent performance and smooth operation in precision assemblies.
W 628/7-2Z Bearing Typical Application Areas
This bearing is ideally suited for applications requiring a compact, high-speed, and corrosion-resistant solution. Key industries and equipment include:
- Small Electric Motors and Spindles
- Medical and Dental Handpieces
- Precision Instruments and Optical Devices
- Office Automation Equipment (e.g., printers, scanners)
- Food Processing and Packaging Machinery
