W 630/2 R-2ZS
W Series Stainless Steel Flanged Miniature Bearings
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Part No.
Part No.
W 630/2 R-2ZS
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.000713 kg
Tolerance class
P0
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
2 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
7 mm
Outside diameter tolerance
-0.008mm to 0
Width
3.5 mm
Width tolerance
-0.04mm to 0
Outer Ring Dimensions
Flange outer diameter
8.5 mm
Flange thickness
0.9 mm
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
50 lbf
Radial static load rating
15 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 R-2ZS Bearing Product Overview & Core Advantages
The W 630/2 R-2ZS is a miniature metric single row deep groove ball bearing engineered for precision applications requiring compact dimensions and reliable performance. Constructed entirely from stainless steel, it offers excellent corrosion resistance. Its key advantages include the ability to handle radial loads efficiently, a shielded design (2Z) for contaminant protection, and pre-lubrication for immediate, maintenance-free operation. This bearing is ideal for applications demanding high precision, compact design, and long-term reliability in challenging environments.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| W | Designates a stainless steel bearing series. |
| 630/2 | Indicates the specific bearing size and geometry (2 mm bore, 7 mm OD). |
| R | Signifies the presence of a flange on the outer ring for simplified mounting and positioning. |
| 2Z | Denotes non-contact shields on both sides, providing effective protection against contaminants while minimizing friction. |
| S | Confirms the bearing components (rings, balls, cage) are made of stainless steel. |
W 630/2 R-2ZS Bearing Structural Features & Performance Benefits
- Compact & Lightweight Design: With a bore diameter of 2 mm and a total weight of just 0.000713 kg, this bearing is engineered for space-constrained and weight-sensitive applications.
- Robust Flanged Construction: The integral flange (8.5 mm outer diameter) ensures easy and precise axial location within a housing, simplifying assembly and enhancing positional stability.
- Effective Sealing: The 2Z non-contact shields protect the internal bearing components from dust and other particulates, extending service life and reliability without significantly impacting the limiting speed of 80,000 rpm.
- Corrosion Resistance & Pre-Lubrication: The all-stainless-steel construction and factory-applied grease enable reliable operation across a temperature range of -30°C to 120°C, making it suitable for various industrial environments.
W 630/2 R-2ZS Bearing Typical Application Areas
This miniature flanged bearing is ideally suited for:
- Small Precision Motors (e.g., in drones, medical devices)
- Instrumentation and Control Systems
- Office Automation Equipment (printers, scanners)
- Optical Encoders and Sensors
- Guidance systems and other miniature mechanical assemblies requiring precise radial load support and easy mounting.
