W 627/3-2Z
W Series Stainless Steel Miniature Bearings
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Part No.
Part No.
W 627/3-2Z
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
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 627/3-2Z Bearing Product Overview & Core Advantages
The W 627/3-2Z is a miniature single row deep groove ball bearing engineered for applications demanding compact size and reliable performance. Constructed entirely from stainless steel, it offers excellent corrosion resistance. Its key advantage lies in its ability to handle primarily radial loads efficiently, while its shielded design (2Z) and factory-applied grease lubrication ensure long-term, maintenance-free operation in a wide temperature range from -30°C to 120°C. This makes it an ideal, high-reliability component for precision instruments and small mechanisms.
W 627/3-2Z Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| W 627/3 | Indicates the bearing series and size. A miniature deep groove ball bearing with a 3 mm bore diameter. |
| -2Z | Signifies that the bearing is equipped with shields on both sides. This provides effective protection against contamination while allowing for higher limiting speeds compared to contact seals. |
W 627/3-2Z Bearing Structural Features & Performance Benefits
- Compact & Lightweight Design: With dimensions of 3x6x2.5 mm and a weight of only 0.000305 kg, this bearing is designed for space-constrained applications without compromising performance.
- Corrosion Resistance: The use of stainless steel for all components (rings, balls, cage) ensures reliable operation in humid or corrosive environments, enhancing longevity.
- Maintenance-Free Operation: The combination of non-contact shields (2Z) and pre-applied grease lubrication seals in the lubricant and keeps contaminants out, resulting in a long service life with no need for re-lubrication.
- Precision Performance: Manufactured to P0 tolerance class and standard CN radial internal clearance, it provides consistent and smooth running for precision applications.
W 627/3-2Z Bearing Typical Application Areas
- Precision Instruments: Ideal for small motors, optical encoders, and measuring devices.
- Small Motors & Drives: Used in miniature DC motors, stepper motors, and fan motors.
- Office Automation Equipment: Applicable in printers, scanners, and copiers.
- Medical Devices: Suitable for small, precise mechanisms in medical and dental handpieces.
- Robotics & RC Models: Used in small joints, gears, and drives requiring minimal friction and high reliability.
