W 618/4/R799
W Series Stainless Steel Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
W 618/4/R799
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
3.0E-5 kg
Tolerance class
ABEC 1 | ISO P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
1 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
3 mm
Outside diameter tolerance
-0.008mm to 0
Width
1 mm
Width tolerance
-0.04mm to 0
Performance
Temperature range
-30°to 120 °C
Radial dynamic load rating
12 lbf
Radial static load rating
3 lbf
Limiting speed
150 X 1000 rpm
Lubrication
None
Radial internal clearance
CN
Materials
Ring material
Stainless Steel
Ball material
Stainless Steel
Cage material
Chrome Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
W 618/4/R799 Bearing Product Overview & Core Advantages
The W 618/4/R799 is a miniature deep groove ball bearing designed for applications demanding compact size, reliable performance, and high precision. As a single row bearing with an open design, it excels in handling primarily radial loads. Manufactured from stainless steel for both rings and balls, it offers excellent corrosion resistance, making it suitable for a wide operating temperature range from -30°C to 120°C. Its compact dimensions (1mm bore, 3mm OD, 1mm width) and ABEC 1 / ISO P0 tolerance class make it an ideal choice for high-precision, space-constrained mechanisms.
Model Code Breakdown
The model number W 618/4/R799 can be interpreted as follows:
- W: Designates a series of miniature and instrument precision bearings.
- 618: Indicates the basic bearing series, a deep groove ball bearing design.
- 4: Specifies the size code, corresponding to the 1mm bore diameter.
- R: Denotes the use of stainless steel for the bearing rings.
- 799: A manufacturer-specific suffix, often related to internal specifications or lot coding.
W 618/4/R799 Bearing Structural Features & Performance Benefits
- High Precision & Reliability: Built to ABEC 1 (ISO P0) tolerance standards with standard CN radial internal clearance, this bearing ensures smooth and consistent operation in precision assemblies.
- Corrosion Resistance: The use of stainless steel for the rings and balls provides superior protection against rust and corrosion, extending service life in challenging environments.
- Compact & Lightweight Design: With an extremely small cross-section and a weight of just 0.00003 kg, it is engineered for applications where minimizing size and mass is critical.
- High-Speed Capability: The chrome steel cage and optimized design contribute to a high limiting speed of 150,000 rpm, suitable for very fast-rotating spindles and instruments.
- Application Flexibility: The open seal type allows for custom lubrication schemes or operation in clean environments, providing flexibility for the design engineer.
W 618/4/R799 Bearing Typical Application Areas
This miniature deep groove ball bearing is ideally suited for:
- Precision Instruments: Optical encoders, gyroscopes, and medical devices.
- Small Motors: Stepper motors, coreless motors, and miniature DC motors.
- Office Automation Equipment: Printers, scanners, and copiers.
- Robotics: Small joints, gearboxes, and sensor mounts.
- High-Speed Spindles: Dental handpieces, small grinding tools.
