W 60/2.5
W Series Stainless Steel Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
W 60/2.5
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.0006 kg
Tolerance class
P0
Seal type
Open
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
2.8 mm
Width tolerance
-0.04mm to 0
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
70 lbf
Radial static load rating
20 lbf
Limiting speed
95 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 60/2.5 Bearing Product Overview & Core Advantages
The W 60/2.5 is a high-precision, metric single row deep groove ball bearing engineered for applications demanding compact design and reliable performance. Constructed entirely from stainless steel, it offers excellent corrosion resistance. This bearing is designed to primarily handle radial loads and is characterized by its extremely small dimensions (2.5mm bore, 8mm OD) and low weight, making it ideal for miniature and precision instruments where space and mass are critical constraints.
W 60/2.5 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Interpretation | Technical Significance |
|---|---|---|
| W 60/2.5 | Basic Designation | Indicates a stainless steel deep groove ball bearing with a 2.5 mm bore diameter. |
| (Seal type: Open) | Sealing | An open (unsealed) design, allowing for custom lubrication schemes but requiring a clean operating environment. |
| (Lubrication: None) | Lubrication | Supplied without grease, providing flexibility for application-specific lubrication or dry running in certain conditions. |
| (Tolerance class: P0) | Precision Class | Standard tolerance class suitable for a wide range of general applications. |
W 60/2.5 Bearing Structural Features & Performance Benefits
- Compact and Lightweight Design: With a bearing width of only 2.8 mm and a weight of 0.0006 kg, it is engineered for space-critical assemblies without compromising structural integrity.
- Full Stainless Steel Construction: The rings, balls, and stainless steel cage provide superior corrosion resistance, making it suitable for harsh environments and applications requiring washdown or exposure to chemicals.
- High-Speed Capability: The optimized single row design and precision grinding contribute to a high limiting speed of 95,000 rpm, enabling use in fast-rotating spindles and miniature motors.
- Radial Load Capacity: The deep groove raceway is efficiently designed to support the specified radial dynamic and static load ratings, ensuring reliable performance under load.
W 60/2.5 Bearing Typical Application Areas
This miniature deep groove ball bearing is ideally suited for:
- Precision Instruments: Optical encoders, medical devices, and laboratory equipment.
- Small Motors and Drives: Stepper motors, micro-DC motors, and fan spindles.
- Office Automation Equipment: Printers, scanners, and copiers.
- Robotics and RC Models: Joints, gears, and small drive systems.
