W 61808-2Z
W Series Stainless Steel Bearings
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Part No.
Part No.
W 61808-2Z
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.03 kg
Tolerance class
P0
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
40 mm
Bore diameter tolerance
-0.012mm to 0
Outside diameter
52 mm
Outside diameter tolerance
-0.013mm to 0
Width
7 mm
Width tolerance
-0.12mm to 0
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
877 lbf
Radial static load rating
843 lbf
Limiting speed
13 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 61808-2Z Bearing Product Overview & Core Advantages
The W 61808-2Z is a single row deep groove ball bearing designed for high-performance applications requiring reliable operation and long service life. Constructed entirely from stainless steel, it offers excellent corrosion resistance. Its key advantage lies in its ability to handle radial loads efficiently while also accommodating moderate axial loads in both directions. The inclusion of integrated shields (2Z) and pre-applied grease lubrication makes it a compact, ready-to-install, and largely maintenance-free solution, ideal for applications demanding precision and reliability within a standard P0 tolerance class.
W 61808-2Z Bearing Model Code Explained, Specifications & Naming Convention
The model number W 61808-2Z can be broken down as follows:
- W: Manufacturer's prefix/series identifier.
- 61808: The basic bearing designation. "61" indicates a deep groove ball bearing series with a particularly thin cross-section. "08" specifies a 40 mm bore diameter (bore = 08 * 5 = 40 mm).
- 2Z: Signifies that the bearing is equipped with shields on both sides. These non-contact shields protect the bearing interior from coarse contaminants while minimizing friction, contributing to the high limiting speed.
W 61808-2Z Bearing Structural Features & Performance Benefits
- Compact and Lightweight Design: With a width of only 7 mm and a weight of just 0.03 kg, this bearing is engineered for space-constrained applications without compromising performance.
- Robust Load Capacity: The deep groove raceway and optimized geometry enable a dynamic load rating of 877 lbf and a static load rating of 843 lbf, providing reliable support for radial loads.
- High-Speed Capability: The combination of a low-friction stainless steel cage, shields (2Z), and effective grease lubrication allows for a high limiting speed of 13,000 rpm.
- Maintenance-Free Operation: The pre-lubricated and shielded (2Z) construction seals in the lubricant and seals out debris, enabling long-term operation without re-lubrication, especially within the specified temperature range of -30°C to 120°C.
W 61808-2Z Bearing Typical Application Areas
This bearing's compact size, corrosion resistance, and high-speed performance make it suitable for a wide range of precision applications, including:
- Electric Motors and Small Gearboxes
- Medical and Dental Equipment
- Food Processing and Packaging Machinery
- Precision Instruments and Optical Devices
- Office Automation Equipment (e.g., printers, scanners)
