W 634-2Z
W Series Stainless Steel Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
W 634-2Z
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.0052 kg
Tolerance class
P0
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
4 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
16 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
171 lbf
Radial static load rating
60 lbf
Limiting speed
50 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
No drawings available at the moment, will be launched soon
Price:
$ 2.7
/ each
In Stock
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W 634-2Z Bearing Product Overview & Core Advantages
The W 634-2Z is a single row deep groove ball bearing designed for precision applications requiring high reliability. Constructed entirely from stainless steel, it offers excellent corrosion resistance. Its key advantage is the integration of shielded seals (2Z), which retain factory-applied grease lubrication and effectively protect against contamination. This combination delivers a compact, maintenance-free solution suitable for a wide operating temperature range, making it ideal for applications demanding long service life and consistent performance under radial loads.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| W | Stainless Steel Bearing Series |
| 634 | Bearing size series designation (6: Extra Small, 3: Medium, 4: Bore Code) |
| 2Z | Bearing with shielded seals on both sides. This provides effective protection against contaminants while retaining lubricant, contributing to its maintenance-free characteristic. |
W 634-2Z Bearing Structural Features & Performance Benefits
- Full Stainless Steel Construction: The rings, balls, and cage are manufactured from stainless steel, providing superior corrosion resistance and making the bearing suitable for harsh environments and washdown applications.
- Shielded Design (2Z): The non-contact steel shields protect the internal components from dust and other particulates, while sealing in the pre-applied grease. This enhances bearing life and reliability, supporting its maintenance-free operation.
- Deep Groove Raceway: The geometry of the deep groove raceway is optimized to handle not only radial loads but also moderate axial loads in both directions, offering versatile load capacity.
- Pre-lubricated with Grease: The bearing is factory-filled with grease, ensuring immediate operation and smooth running from the start, with a limiting speed of 50,000 rpm.
- Standard Precision (P0) and Normal Clearance (CN): Provides consistent and reliable performance for a wide range of general-purpose applications.
W 634-2Z Bearing Typical Application Areas
- Precision Instruments and Optical Devices
- Small Electric Motors and Gearboxes
- Medical and Dental Equipment
- Food Processing and Packaging Machinery
- Office Automation Equipment (e.g., Printers, Scanners)
- RC Models and Drones
