W 61706-2RZ
W Series Stainless Steel Bearings
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Part No.
Part No.
W 61706-2RZ
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.0081 kg
Tolerance class
P0
Seal type
Sealed
For load direction
Radial
Main Dimensions
Bore diameter
30 mm
Bore diameter tolerance
-0.01mm to 0
Outside diameter
37 mm
Outside diameter tolerance
-0.011mm to 0
Width
4 mm
Width tolerance
-0.12mm to 0
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
146 lbf
Radial static load rating
119 lbf
Limiting speed
18 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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W 61706-2RZ Bearing Product Overview & Core Advantages
The W 61706-2RZ is a metric single row deep groove ball bearing engineered for high precision and reliable performance in compact spaces. Constructed entirely from stainless steel, it offers excellent corrosion resistance. Its key advantage lies in its sealed design (2RZ) with pre-applied grease lubrication, making it a maintenance-free solution that protects against contaminants. This bearing is optimized to handle primarily radial loads and is capable of operating at high speeds, making it ideal for applications demanding high reliability and long service life.
Model Code Breakdown
| Model Segment | Technical Meaning | Significance |
|---|---|---|
| W | Stainless Steel Bearing | Indicates the bearing rings and balls are made from stainless steel, providing superior corrosion resistance. |
| 61706 | Basic Bearing Number | Defines the bearing series and dimensions: a 30 mm bore, 37 mm OD, and 4 mm width. |
| 2RZ | Non-Contact Seals on Both Sides | Features low-friction seals on both sides that effectively shield the internal components from dust and moisture while minimizing torque, contributing to the bearing's high limiting speed. |
W 61706-2RZ Bearing Structural Features & Performance Benefits
- Compact & Lightweight Design: With a 4 mm width and a weight of only 0.0081 kg, this bearing is an ideal solution for applications with severe space and weight constraints.
- Corrosion Resistance: The all-stainless steel construction (rings, balls, and cage) ensures reliable operation in humid or corrosive environments, extending the component's lifespan.
- Sealed & Lubricated for Life: The 2RZ seals, combined with factory-applied grease, create a maintenance-free system. This prevents lubricant leakage and contaminant ingress, ensuring consistent performance and reducing total cost of ownership.
- High-Speed Capability: The optimized design, including the non-contact seals, allows for a limiting speed of 18,000 rpm, making it suitable for demanding, high-rotation applications.
- Precision & Rigidity: Manufactured to P0 tolerance class and standard CN radial internal clearance, this precision bearing provides smooth running and consistent performance under radial loads.
W 61706-2RZ Bearing Typical Application Areas
This bearing is widely used in industries and equipment requiring compact, corrosion-resistant, and maintenance-free solutions. Key applications include:
- Precision Instruments and measuring devices
- Small Electric Motors and miniature gearboxes
- Medical and Dental Equipment
- Food Processing and Packaging Machinery
- Office Automation Equipment (e.g., printers, scanners)
