W 630/2.5 R-2Z
W Series Stainless Steel Flanged Miniature Bearings
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Part No.
Part No.
W 630/2.5 R-2Z
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.001 kg
Tolerance class
P0
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
2.5 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
8 mm
Outside diameter tolerance
-0.008mm to 0
Width
4 mm
Width tolerance
-0.04mm to 0
Outer Ring Dimensions
Flange outer diameter
9.5 mm
Flange thickness
0.9 mm
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
70 lbf
Radial static load rating
20 lbf
Limiting speed
80 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
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In Stock
Price available upon request.
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W 630/2.5 R-2Z Bearing Product Overview & Core Advantages
The W 630/2.5 R-2Z is a miniature metric single row deep groove ball bearing engineered for applications demanding high precision and reliability in compact spaces. Its core advantages stem from its stainless steel construction and integrated shields (2Z), providing excellent corrosion resistance and protection against contaminant ingress. This bearing is designed to primarily handle radial loads efficiently while offering a high limiting speed, making it an ideal solution for small, high-speed mechanisms requiring long-term, maintenance-free operation.
W 630/2.5 R-2Z Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| W | Stainless Steel Bearing Series |
| 630/2.5 | Bearing size designation (2.5 mm bore, 8 mm OD) |
| R | Flanged Outer Ring |
| 2Z | Non-contact shields on both sides for contaminant protection |
W 630/2.5 R-2Z Bearing Structural Features & Performance Benefits
- Flanged Design for Easy Mounting & Axial Location: The flanged outer ring (R suffix) simplifies bearing housing design and provides secure axial location, reducing assembly time and cost.
- Robust Stainless Steel Construction: Manufactured entirely from stainless steel (rings, balls, cage), this bearing offers superior corrosion resistance, making it suitable for harsh environments and washdown applications.
- Effective Contamination Protection: The 2Z shields retain grease and effectively protect the bearing's interior from dust and other particulates, enhancing service life and reliability.
- Pre-lubricated for Maintenance-Free Operation: Factory-filled grease lubrication ensures immediate operation and long-term, maintenance-free performance within the specified temperature range.
- High-Speed Capability: The optimized design and stainless steel cage contribute to a high limiting speed of 80,000 rpm, suitable for demanding miniature applications.
W 630/2.5 R-2Z Bearing Typical Application Areas
- Small Precision Motors: Ideal for spindle support in miniature DC motors and stepper motors.
- Medical and Dental Equipment: Used in handheld tools, pumps, and scanners where corrosion resistance and reliability are critical.
- Office Automation Equipment: Suitable for scanners, printers, and copiers.
- Instrumentation and Control Devices: Applied in encoders, sensors, and small precision gearboxes.
- Radio Control Models and Drones: Used in motor and propeller shaft applications requiring lightweight and high-speed performance.
