W 619/9 R
W Series Stainless Steel Flanged Miniature Bearings
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Part No.
Part No.
W 619/9 R
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.0082 kg
Tolerance class
P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
9 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
20 mm
Outside diameter tolerance
-0.009mm to 0
Width
6 mm
Width tolerance
-0.12mm to 0
Outer Ring Dimensions
Flange outer diameter
23 mm
Flange thickness
1.5 mm
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
438 lbf
Radial static load rating
209 lbf
Limiting speed
50 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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W 619/9 R Bearing Product Overview & Core Advantages
The W 619/9 R is a metric single row deep groove ball bearing designed for exceptional performance in compact applications. Engineered with stainless steel construction throughout (rings, balls, and cage), it offers excellent corrosion resistance. This open-type bearing is optimized for radial loads and operates effectively across a wide temperature range. Its small footprint, with a 9mm bore and 20mm outside diameter, makes it an ideal choice for applications demanding high precision and reliability in limited spaces.
W 619/9 R Bearing Model Code Explained, Specifications & Naming Convention
The model designation W 619/9 R can be broken down as follows:
- W: Manufacturer's prefix/series identifier.
- 619: Deep groove ball bearing series, characterized by a low cross-section.
- 9: Bore diameter in millimeters (9 mm).
- R: Typically denotes a flanged outer ring, which aids in precise axial location and simplifies housing design. The flange dimensions are 23mm outer diameter and 1.5mm thickness.
W 619/9 R Bearing Structural Features & Performance Benefits
- Robust Stainless Steel Construction: All components are made from stainless steel, providing superior corrosion resistance and making the bearing suitable for harsh environments and clean applications.
- Flanged Design for Easy Installation: The integral flange on the outer ring simplifies axial positioning and secures the bearing within the housing, enhancing operational stability and assembly efficiency.
- High-Speed Capability: With a limiting speed of 50,000 rpm, this bearing is engineered for high-speed applications, a characteristic supported by its precision deep groove raceway and stainless steel cage.
- Precision Tolerances: Manufactured to P0 tolerance class and standard CN radial internal clearance, it ensures consistent performance, low noise, and smooth operation.
- Wide Operating Temperature: The all-steel construction allows for a functional temperature range from -30°C to 120°C.
W 619/9 R Bearing Typical Application Areas
This versatile flanged ball bearing is commonly specified in:
- Precision Small Motors (e.g., stepper motors, miniature DC motors)
- Medical and Dental Equipment (e.g., handpieces, small pumps)
- Office Automation Equipment (e.g., printers, scanners)
- Instrumentation and Control Devices
- Robotics and Small Gearboxes
