W 634 R
W Series Stainless Steel Flanged Miniature Bearings
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Part No.
Part No.
W 634 R
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.0052 kg
Tolerance class
P0
Seal type
Open
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
Outer Ring Dimensions
Flange outer diameter
18 mm
Flange thickness
1 mm
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
171 lbf
Radial static load rating
60 lbf
Limiting speed
63 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 634 R Bearing Product Overview & Core Advantages
The W 634 R is a metric single row deep groove ball bearing designed for high-performance applications requiring compact dimensions and reliable operation. Constructed entirely from stainless steel, it offers excellent corrosion resistance. As an open type bearing, it is ideal for systems where external sealing is managed separately. Its primary strengths lie in its ability to handle radial loads efficiently within a compact footprint, making it a superior choice for applications demanding precision and durability in constrained spaces.
Model Code In-Depth Analysis
| Code Segment | Technical Meaning |
|---|---|
| W | Stainless Steel Bearing Series |
| 634 | Bore Diameter: 4 mm, Outer Diameter: 16 mm, Width: 5 mm |
| R | Bearing with Flange on Outer Ring |
W 634 R Bearing Structural Features & Performance Benefits
- Compact & Robust Flange Design: The integrated flange (OD: 18mm) simplifies mounting and positioning, providing secure axial location and enhancing overall system rigidity.
- High-Corrosion Resistance: Manufactured from stainless steel for rings, balls, and cage, this bearing is suitable for harsh environments, including those with exposure to moisture and chemicals.
- Precision Performance: Built to P0 tolerance class and standard CN radial internal clearance, it ensures consistent and smooth operation, contributing to the accuracy of the host application.
- High-Speed Capability: With a limiting speed of 63,000 rpm, it is engineered for demanding high-velocity applications. The open design allows for optimal lubrication management to support these speeds.
W 634 R Bearing Typical Application Areas
This bearing is ideally suited for:
- Small Precision Motors and Stepper Motors
- Medical Devices and Dental Handpieces
- Optical Encoders and Instrumentation
- Food Processing Equipment (due to its stainless steel construction and RoHS/REACH compliance)
- Office Automation Equipment and other compact machinery requiring reliable, high-speed ball bearing performance.
