W 627 R
W Series Stainless Steel Flanged Miniature Bearings
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Part No.
Part No.
W 627 R
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.013 kg
Tolerance class
P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
7 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
22 mm
Outside diameter tolerance
-0.009mm to 0
Width
7 mm
Width tolerance
-0.12mm to 0
Outer Ring Dimensions
Flange outer diameter
25 mm
Flange thickness
1.5 mm
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
447 lbf
Radial static load rating
175 lbf
Limiting speed
48 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 627 R Bearing Product Overview & Core Advantages
The W 627 R is a single row deep groove ball bearing designed for exceptional performance in compact applications requiring high precision and reliability. This metric bearing excels at handling primarily radial loads and is constructed entirely from stainless steel for superior corrosion resistance. Its open design and CN radial internal clearance make it a versatile and robust choice for a wide range of industrial and precision machinery.
Model Code In-Depth Analysis
| Code Segment | Technical Meaning |
|---|---|
| W | Designates a stainless steel deep groove ball bearing series. |
| 627 | Indicates the standard boundary dimensions: 7 mm bore, 22 mm outside diameter, 7 mm width. |
| R | Signifies the inclusion of a snap ring (flange) on the outer ring for simplified axial location and mounting. |
W 627 R Bearing Structural Features & Performance Benefits
- Compact & Robust Design: The single row construction with a 7 mm width offers a space-saving solution without compromising on strength, making it ideal for applications with strict size constraints.
- High Corrosion Resistance: Manufactured entirely from stainless steel (rings, balls, and cage), this bearing is suitable for use in harsh environments, including those exposed to moisture and chemicals.
- Simplified Mounting & Axial Location: The integrated flange (snap ring groove on the outer ring) facilitates easy installation and secure axial positioning within a housing, reducing assembly time and complexity.
- Precision Performance: Built to P0 tolerance class with a CN radial internal clearance, it ensures consistent, smooth, and low-noise operation, which is critical for precision instruments.
- Wide Operating Range: Capable of operating within a temperature range of -30°C to 120°C, providing flexibility for various application environments.
W 627 R Bearing Typical Application Areas
This bearing is engineered for demanding applications where compactness, corrosion resistance, and reliability are paramount. Key sectors include:
- Precision Instruments: Optical encoders, measuring devices, and laboratory equipment.
- Food & Beverage Processing: Machinery requiring frequent washdowns and corrosion-resistant components.
- Medical Devices: Small motors, pumps, and handheld surgical tools.
- Small Electric Motors: Used in fans, pumps, and other fractional horsepower applications.
- Office Automation Equipment: Printers, scanners, and copiers.
