D/W R4A-2RS1
D/W Series Stainless Steel Miniature Bearings
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Part No.
Part No.
D/W R4A-2RS1
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.009 kg
Tolerance class
P0
Seal type
Sealed
For load direction
Radial
Main Dimensions
Bore diameter
0.25"
Bore diameter tolerance
-0.00019" to 0.00019"
Outside diameter
0.75"
Outside diameter tolerance
-0.0007" to -0.00031"
Width
0.28118"
Width tolerance
-0.005" to 0"
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
344 lbf
Radial static load rating
132 lbf
Limiting speed
24 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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D/W R4A-2RS1 Bearing Product Overview & Core Advantages
The D/W R4A-2RS1 is a single row deep groove ball bearing designed for high precision and reliability in demanding applications. Constructed entirely from stainless steel, it offers excellent corrosion resistance. Its key advantage lies in its sealed design (2RS1), which effectively retains lubricant and excludes contaminants, ensuring long service life and maintenance-free operation. This bearing is engineered to handle primarily radial loads and is characterized by its compact design, making it ideal for applications where space is limited and operational cleanliness is paramount.
D/W R4A-2RS1 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| D/W | Manufacturer's prefix (D/W). |
| R4 | Bearing series/size designation. |
| A | Specific internal design variant. |
| 2RS1 | Contact rubber seals on both sides, providing superior protection against contamination and grease leakage. |
D/W R4A-2RS1 Bearing Structural Features & Performance Benefits
- Robust Stainless Steel Construction: All components, including rings, balls, and cage, are made from stainless steel, offering excellent resistance to corrosion and enabling use in harsh environments.
- Effective Sealing: The 2RS1 double-contact seals provide a highly effective barrier against contaminants like dust and moisture, while retaining the pre-applied grease. This significantly enhances bearing life and reliability, making it suitable for maintenance-free applications.
- Precision and Load Capacity: Manufactured to P0 tolerance class with a standard CN radial internal clearance, this bearing ensures consistent performance. It features a radial dynamic load rating of 344 lbf and a radial static load rating of 132 lbf, providing reliable operation under various load conditions.
- Optimized for Standard Applications: Pre-lubricated with grease, it is ready for installation and operates effectively within a temperature range of -30°C to 120°C.
D/W R4A-2RS1 Bearing Typical Application Areas
This bearing is well-suited for a wide range of applications requiring compact size, corrosion resistance, and sealed operation, including:
- Food and Beverage Processing Equipment
- Medical and Dental Devices
- Precision Instruments and Optical Devices
- Small Electric Motors and Gearboxes
- Agricultural and Marine Equipment (where corrosion is a concern)
