W 630/3-2Z
W Series Stainless Steel Miniature Bearings
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Part No.
Part No.
W 630/3-2Z
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.0013 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
9 mm
Outside diameter tolerance
-0.008mm to 0
Width
5 mm
Width tolerance
-0.12mm to 0
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
73 lbf
Radial static load rating
21 lbf
Limiting speed
70 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 630/3-2Z Bearing Product Overview & Core Advantages
The W 630/3-2Z is a metric single row deep groove ball bearing designed for high precision and reliable performance in compact applications. Constructed entirely from stainless steel, it offers excellent corrosion resistance. Its key advantage lies in its ability to efficiently handle radial loads, making it an ideal choice for applications demanding high rotational accuracy and long service life in constrained spaces. The inclusion of shields (2Z) and pre-applied grease lubrication ensures protected and maintenance-free operation.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| W 630/3 | Basic bearing designation, indicating a single row deep groove ball bearing with a 3 mm bore. |
| -2Z | Specifies shields on both sides. This provides effective protection against contamination while allowing for higher limiting speeds compared to contact seals. |
W 630/3-2Z Bearing Structural Features & Performance Benefits
- Robust Stainless Steel Construction: All components, including rings, balls, and cage, are made from stainless steel, providing superior corrosion resistance and durability in harsh environments.
- Optimized Radial Load Capacity: The deep groove raceway and single row design are engineered to carry significant radial loads efficiently.
- Shielded for Protection: The non-contact shields (2Z) retain lubricant and exclude larger contaminants, contributing to a longer, maintenance-free service life without a significant penalty on the limiting speed.
- Pre-lubricated for Immediate Use: Filled with grease, the bearing is ready for installation and operation, simplifying the assembly process.
- Precision Tolerances: Manufactured to P0 tolerance class and standard CN radial internal clearance, ensuring consistent performance and smooth operation.
W 630/3-2Z Bearing Typical Application Areas
This bearing is well-suited for a wide range of small, precision devices, including:
- Small electric motors and gearboxes
- Precision instruments and optical devices
- Office automation equipment (e.g., printers, scanners)
- Medical and dental handpieces
- Radio control models and drones
