D/W R1
D/W Series Stainless Steel Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
D/W R1
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.0002 kg
Tolerance class
P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
0.05556"
Bore diameter tolerance
-0.00019" to 0.00019"
Outside diameter
0.18748"
Outside diameter tolerance
-0.0007" to -0.00031"
Width
0.07811"
Width tolerance
-0.005" to 0"
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
30 lbf
Radial static load rating
8 lbf
Limiting speed
130 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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In Stock
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D/W R1 Bearing Product Overview & Core Advantages
The D/W R1 is a precision miniature ball bearing engineered for demanding applications requiring exceptional dimensional stability and corrosion resistance. Constructed entirely from stainless steel, this single row, open bearing is designed for radial loads and offers reliable performance in a compact, lightweight package. Its high limiting speed and P0 tolerance class make it an ideal choice for high-speed, high-precision mechanisms where reliability is critical.
D/W R1 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| D/W | Manufacturer Series Designation |
| R1 | Bearing Size Code (Bore: 0.05556", OD: 0.18748") |
| Open | No seals or shields, allowing for higher speeds and easy re-lubrication. |
| None (Lubrication) | Supplied without grease, providing flexibility for specialized lubrication. |
D/W R1 Bearing Structural Features & Performance Benefits
- Corrosion Resistance: Manufactured from 100% stainless steel (rings, balls, cage), this bearing is inherently resistant to rust and corrosion, ensuring long-term performance in harsh environments and complying with ROHS and REACH standards.
- High-Speed Capability: The open design and stainless steel cage minimize friction and drag, enabling a high limiting speed of 130,000 rpm for miniature instrument applications.
- Precision & Stability: Built to ABEC 1 (P0) tolerance class with a CN radial internal clearance, this bearing provides consistent running accuracy and smooth operation, which is critical for sensitive instrumentation.
- Compact & Lightweight: With an ultra-small bore diameter and a total weight of just 0.0002 kg, it is perfect for space-constrained and weight-sensitive designs.
D/W R1 Bearing Typical Application Areas
This miniature stainless steel ball bearing
Precision Medical and Dental Instruments
Small DC Motor and Gearbox Spindles
Optical Encoders and Scanning Devices
High-Speed Small Fans
Radio Control Models and Drones
Laboratory and Analytical Equipment
