D/W R3
D/W Series Stainless Steel Miniature Bearings
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Part No.
Part No.
D/W R3
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.0021 kg
Tolerance class
P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
0.18748"
Bore diameter tolerance
-0.00019" to 0.00019"
Outside diameter
0.5"
Outside diameter tolerance
-0.0007" to -0.00031"
Width
0.15618"
Width tolerance
-0.005" to 0"
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
167 lbf
Radial static load rating
56 lbf
Limiting speed
70 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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D/W R3 Bearing Product Overview & Core Advantages
The R3 bearing is a precision single row deep groove ball bearing designed for exceptional performance in compact applications. Manufactured entirely from stainless steel, it offers excellent corrosion resistance and is suitable for a wide operating temperature range. This bearing is engineered to primarily handle radial loads with high reliability. Its open design and P0 tolerance class make it an ideal, cost-effective solution for applications requiring smooth operation and long service life without the need for sealing.
D/W R3 Bearing Model Code Explained, Specifications & Naming Convention
| Designation | Interpretation |
|---|---|
| R3 | Standard inch-series bearing designation, indicating specific bearing dimensions (Bore: 0.18748", OD: 0.5", Width: 0.15618"). |
| Open | No seals or shields, allowing for higher limiting speeds and easy re-lubrication if required. |
| P0 | Standard tolerance class (Normal), suitable for most general applications. |
| CN | Normal group radial internal clearance. |
D/W R3 Bearing Structural Features & Performance Benefits
- All-Stainless-Steel Construction: The rings, balls, and cage are made from stainless steel, providing superior corrosion resistance and enabling use in harsh environments and clean applications.
- High-Speed Capability: The open bearing design and stainless steel cage contribute to a high limiting speed of 70,000 rpm, making it suitable for high-speed applications.
- Precision Performance: Manufactured to P0 tolerance class with controlled radial internal clearance (CN) for consistent, smooth, and low-vibration operation.
- Robust Load Capacity: With a radial dynamic load rating of 167 lbf and a radial static load rating of 56 lbf, it provides reliable performance under significant radial loads.
D/W R3 Bearing Typical Application Areas
This R3 ball bearing is widely used in:
- Precision instruments and optical devices
- Small electric motors and fans
- Medical and dental equipment
- Food processing machinery
- Robotics and small gearboxes
- Office automation equipment
