WBB1-8701
WBB Series Stainless Steel Miniature Bearings
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Part No.
Part No.
WBB1-8701
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.0004 kg
Tolerance class
P0
Seal type
Open
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
2.5 mm
Width tolerance
-0.04mm to 0
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
50 lbf
Radial static load rating
15 lbf
Limiting speed
100 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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WBB1-8701 Bearing Product Overview & Core Advantages
The WBB1-8701 is a 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. This open-type bearing is designed primarily for radial loads and is characterized by its high limiting speed and P0 tolerance class, making it suitable for high-speed, low-noise operations in demanding environments.
WBB1-8701 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| WBB1-8701 | Manufacturer's specific model designation for this bearing series. |
| Open (Seal Type) | No seals or shields, allowing for higher speeds and easier re-lubrication, but requiring a cleaner operating environment. |
| None (Lubrication) | Supplied without grease, offering flexibility for the user to apply a specialized lubricant suited to the specific application. |
WBB1-8701 Bearing Structural Features & Performance Benefits
- Compact & Lightweight Design: With a 2 mm bore, 7 mm OD, and a weight of only 0.0004 kg, this bearing is ideal for space-constrained and weight-sensitive applications.
- High-Speed Capability: The single row deep groove design and stainless steel cage contribute to a high limiting speed of 100,000 rpm, enabling use in demanding high-rotation equipment.
- Corrosion Resistance: All components, including rings, balls, and cage, are made from stainless steel, providing reliable operation in humid or corrosive environments.
- Precision Performance: Manufactured to P0 tolerance class and standard CN radial internal clearance, ensuring consistent running accuracy and smooth operation.
WBB1-8701 Bearing Typical Application Areas
This miniature ball bearing is commonly used in:
- Precision Instruments: Small motors, optical encoders, and medical devices.
- Small Electric Motors: Drones, RC models, and miniature fans.
- Office Automation Equipment: Printers, scanners, and copiers.
- Low-Torque Mechanical Systems: Guidance systems and small gearboxes.
