W 638/5-2RS1
W Series Stainless Steel Miniature Bearings
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Part No.
Part No.
W 638/5-2RS1
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.0018 kg
Tolerance class
P0
Seal type
Sealed
For load direction
Radial
Main Dimensions
Bore diameter
5 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
11 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
91 lbf
Radial static load rating
32 lbf
Limiting speed
34 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 638/5-2RS1 Bearing Product Overview & Core Advantages
The W 638/5-2RS1 is a metric single row deep groove ball bearing designed for high performance in compact spaces. Engineered with stainless steel components and integrated seals, it offers reliable operation and long service life. Its primary advantages include excellent capability to handle radial loads, robust construction for demanding applications, and compliance with ROHS and REACH environmental standards. This bearing is ideal for applications requiring corrosion resistance, consistent performance, and low maintenance.
W 638/5-2RS1 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| W 638/5 | Bearing series and size designation; 5 mm bore diameter. |
| 2RS1 | Indicates contact seals on both sides, providing effective protection against contaminants and retention of lubricant. |
W 638/5-2RS1 Bearing Structural Features & Performance Benefits
- Single Row Deep Groove Design: Optimized for high radial load capacity and smooth operation.
- All-Stainless Steel Construction: Rings, balls, and cage made from stainless steel ensure excellent corrosion resistance and durability in harsh environments.
- Sealed Design (2RS1): The double-sided contact seals effectively shield the bearing from dust, moisture, and other contaminants, while retaining the pre-applied grease lubrication, leading to maintenance-free operation.
- Precision Tolerances: Manufactured to P0 tolerance class and standard CN radial internal clearance, ensuring consistent performance and easy interchangeability.
- High-Speed Capability: With a limiting speed of 34,000 rpm, it is suitable for high-speed applications.
W 638/5-2RS1 Bearing Typical Application Areas
This bearing is widely used in various precision and compact mechanisms, including:
- Small Electric Motors (e.g., in power tools, drones)
- Precision Instruments and optical devices
- Medical Equipment (e.g., dental handpieces, small pumps)
- Office Automation Equipment (e.g., printers, scanners)
- Food Processing Machinery (benefiting from its stainless steel construction and sealed design)
