W 61801
W Series Stainless Steel Bearings
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Part No.
Part No.
W 61801
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.0053 kg
Tolerance class
P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
12 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
21 mm
Outside diameter tolerance
-0.009mm to 0
Width
5 mm
Width tolerance
-0.12mm to 0
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
339 lbf
Radial static load rating
202 lbf
Limiting speed
43 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 61801 Bearing Product Overview & Core Advantages
The W 61801 is a single row deep groove ball bearing designed for high-precision applications requiring reliable performance in compact spaces. Constructed entirely from stainless steel, it offers excellent corrosion resistance. This bearing is engineered to primarily handle radial loads and is characterized by its open design and P0 tolerance class, making it a cost-effective and versatile solution for various industrial and precision instruments where moderate speeds and high reliability are essential.
W 61801 Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Meaning | Technical Implication |
|---|---|---|
| W | Stainless Steel Bearing Series | Indicates the entire bearing is manufactured from stainless steel, providing superior corrosion resistance. |
| 61801 | Sizing & Series Code | Denotes a metric, "618" series deep groove ball bearing with a 12 mm bore, 21 mm OD, and 5 mm width. |
| (No suffix) | Open, Unsealed | The bearing is supplied without seals or shields, allowing for higher limiting speeds and custom lubrication. |
W 61801 Bearing Structural Features & Performance Benefits
- Compact & Lightweight Design: With a 5 mm width and a weight of only 0.0053 kg, this bearing is ideal for applications with severe space and weight constraints.
- Corrosion Resistance: The use of stainless steel for the rings, balls, and cage ensures reliable operation in humid or corrosive environments, complying with ROHS and REACH directives.
- Precision Performance: Manufactured to P0 tolerance class and standard CN radial internal clearance, it provides consistent and smooth running for general precision applications.
- High-Speed Capability: The open design and optimized geometry contribute to a high limiting speed of 43,000 rpm, suitable for demanding rotational applications.
- Load Capacity: With a dynamic load rating of 339 lbf and a static load rating of 202 lbf, it offers robust performance for its compact bearing dimensions.
W 61801 Bearing Typical Application Areas
This bearing is commonly used in:
- Precision instruments and measuring devices
- Small electric motors and spindles
- Medical and dental equipment
- Office automation equipment (e.g., printers, scanners)
- Food processing machinery (where corrosion resistance is key)
- Low-torque, high-speed mechanisms
