W 633
W Series Stainless Steel Miniature Bearings
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Part No.
Part No.
W 633
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.0029 kg
Tolerance class
P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
3 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
13 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
167 lbf
Radial static load rating
56 lbf
Limiting speed
70 X 1000 rpm
Lubrication
None
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
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W 633 Bearing Product Overview & Core Advantages
The W 633 is a metric single row deep groove ball bearing engineered for precision and reliability in compact applications. Constructed entirely from stainless steel, it offers excellent corrosion resistance. Its core advantages include a high limiting speed of 70,000 rpm and the ability to support primarily radial loads. The open design allows for versatile lubrication options, making it a versatile and durable choice for high-performance mechanisms where space is at a premium.
W 633 Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Interpretation |
|---|---|
| W | Stainless Steel Bearing Series |
| 633 | Standard bore diameter code for a bearing with a 3 mm bore, 13 mm OD, and 5 mm width. |
| No Suffix | Indicates an open (unsealed) bearing with standard CN radial internal clearance and P0 tolerance class. |
W 633 Bearing Structural Features & Performance Benefits
- Compact & Lightweight Design: With dimensions of 3x13x5 mm and a weight of only 0.0029 kg, this bearing is ideal for applications with severe space and weight constraints.
- High-Speed Capability: The deep groove raceway and stainless steel cage contribute to stable operation at high rotational speeds, up to the specified limiting speed.
- Corrosion Resistance: Manufactured entirely from stainless steel, the W 633 is suitable for use in harsh environments, including those exposed to moisture and certain chemicals.
- Standard Precision & Clearance: Built to P0 tolerance class and standard CN radial internal clearance, it provides reliable performance for a wide range of general applications.
W 633 Bearing Typical Application Areas
- Precision instruments and optical devices
- Small electric motors and miniature gearboxes
- Medical equipment and dental handpieces
- Radio control models and drones
- Office automation equipment and small fans
