WBB1-8705-2Z
WBB Series Stainless Steel Miniature Bearings
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Part No.
Part No.
WBB1-8705-2Z
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.0012 kg
Tolerance class
P0
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
5 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
10 mm
Outside diameter tolerance
-0.008mm to 0
Width
4 mm
Width tolerance
-0.12mm to 0
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
56 lbf
Radial static load rating
19 lbf
Limiting speed
67 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
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WBB1-8705-2Z Bearing Product Overview & Core Advantages
The WBB1-8705-2Z is a metric single row deep groove ball bearing engineered for precision applications requiring compact design and reliable performance. Constructed entirely from stainless steel, it offers excellent corrosion resistance. Its key advantage lies in its ability to efficiently handle radial loads, making it ideal for high-speed operations with a limiting speed of 67,000 rpm. The integral shielded design (2Z) and factory-applied grease lubrication ensure long service life and minimal maintenance, providing a robust solution for demanding environments.
WBB1-8705-2Z Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Benefit |
|---|---|---|
| WBB1-8705 | Basic bearing designation indicating the bearing size (5mm bore, 10mm OD, 4mm width). | Defines the compact physical dimensions for space-constrained applications. |
| 2Z | Specifies shielded on both sides. | Provides effective protection against contamination while allowing for high-speed operation. |
WBB1-8705-2Z Bearing Structural Features & Performance Benefits
- Compact & Robust Construction: The single row design with a stainless steel cage and components provides a lightweight yet durable structure, contributing to a low weight of just 0.0012 kg.
- Radial Load Capacity: Engineered to handle significant radial dynamic loads (56 lbf) and static loads (19 lbf), ensuring stable performance under stress.
- High-Speed Performance: The combination of a precision-ground raceway, optimized grease lubrication, and shielded design enables a high limiting speed of 67,000 rpm.
- Maintenance-Free Operation: Pre-lubricated and shielded (2Z), the bearing is protected from contaminants and is ready for use, reducing the need for servicing.
- Corrosion Resistance & Compliance: Full stainless steel construction ensures reliability in harsh environments, with full compliance to ROHS and REACH standards.
WBB1-8705-2Z Bearing Typical Application Areas
This precision bearing is ideally suited for applications requiring a compact, high-speed, and corrosion-resistant solution. Common uses include:
- Small Precision Motors and Spindles
- Medical and Dental Handpieces
- Optical and Encoder Systems
- Office Automation Equipment (e.g., printers, scanners)
- Instrumentation and Control Devices
