W 627/3 R-2Z
W Series Stainless Steel Flanged Miniature Bearings
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Part No.
Part No.
W 627/3 R-2Z
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.000305 kg
Tolerance class
P0
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
3 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
6 mm
Outside diameter tolerance
-0.008mm to 0
Width
2.5 mm
Width tolerance
-0.12mm to 0
Outer Ring Dimensions
Flange outer diameter
7.2 mm
Flange thickness
0.6 mm
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
26 lbf
Radial static load rating
8 lbf
Limiting speed
85 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 627/3 R-2Z Bearing Product Overview & Core Advantages
The W 627/3 R-2Z is a single row deep groove ball bearing designed for compact applications requiring high reliability. Constructed entirely from stainless steel, it offers excellent corrosion resistance. Its key advantage lies in its shielded (2Z) design, which retains factory-applied grease and effectively excludes contaminants, enabling maintenance-free operation and a long service life. This bearing is engineered to handle primarily radial loads and is suitable for a wide operating temperature range, making it an ideal choice for precision instruments and small mechanisms.
Model Code Breakdown
| Code Segment | Interpretation | Technical Significance |
|---|---|---|
| W 627/3 | Bearing Series & Size | Denotes a specific metric series with a 3 mm bore diameter. |
| R | Flange Design | Indicates the bearing is equipped with an outer ring flange for simplified mounting and axial location. |
| 2Z | Seal Type | Signifies non-contact shields on both sides. This provides effective protection against contamination while minimizing friction, contributing to the high limiting speed. |
W 627/3 R-2Z Bearing Structural Features & Performance Benefits
- Robust Stainless Steel Construction: All components, including rings, balls, and the cage, are made from stainless steel, ensuring superior corrosion resistance and suitability for harsh environments.
- Deep Groove Raceway: The geometry of the deep groove raceway is optimized not only for radial load capacity but also for accommodating moderate axial loads in both directions.
- Flanged Outer Ring: The integrated flange (7.2 mm outer diameter) simplifies installation and positioning within a housing, reducing assembly time and cost.
- Shielded & Pre-Lubricated: The non-contact 2Z shields protect the internal grease from contamination and prevent leakage. Being pre-lubricated with grease, the bearing is ready for immediate use and requires no maintenance, ensuring consistent performance.
- Precision & High-Speed Capability: Manufactured to P0 tolerance class and featuring a low-friction design with shields, this bearing supports a high limiting speed of 85,000 rpm, making it suitable for high-speed applications.
W 627/3 R-2Z Bearing Typical Application Areas
- Small Precision Motors (e.g., in drones, miniature fans)
- Medical and Dental Handpieces
- Office Automation Equipment (e.g., printers, scanners)
- Instrumentation and Control Devices
- Radio-Controlled Models and Hobbyist Projects
- Various low-torque, high-speed mechanisms requiring a compact, maintenance-free solution.
