D/W R2
D/W Series Stainless Steel Miniature Bearings
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Part No.
Part No.
D/W R2
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.0012 kg
Tolerance class
P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
0.125"
Bore diameter tolerance
-0.00019" to 0.00019"
Outside diameter
0.375"
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
80 lbf
Radial static load rating
25 lbf
Limiting speed
85 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 R2 Bearing Product Overview & Core Advantages
The R2 series represents a high-precision single row deep groove ball bearing designed for demanding applications requiring exceptional dimensional stability and corrosion resistance. Constructed entirely from stainless steel, this bearing is engineered to handle primarily radial loads with high reliability. Its compact inch-series design, featuring a 1/8" bore, makes it ideal for applications where space is limited and precision is paramount. The open design and P0 tolerance class ensure consistent performance, while compliance with RoHS and REACH standards makes it suitable for modern, environmentally conscious industries.
D/W R2 Bearing Model Code Explained, Specifications & Naming Convention
| Model Element | Technical Significance |
|---|---|
| R2 | Standard series designation for this specific inch-size single row ball bearing. |
| Open (Seal Type) | No seals or shields, allowing for higher limiting speeds and easy re-lubrication if required. Ideal for clean environments. |
| P0 (Tolerance Class) | Standard dimensional and geometrical tolerance per ISO standards, ensuring reliable interchangeability. |
| CN (Radial Clearance) | Normal radial internal clearance group, suitable for most common operating conditions. |
D/W R2 Bearing Structural Features & Performance Benefits
- All-Stainless-Steel Construction: The bearing rings, balls, and cage are manufactured from stainless steel, providing excellent corrosion resistance and enabling operation in a wide temperature range from -30°C to 120°C. This makes it suitable for harsh environments, including those with exposure to moisture or chemicals.
- High-Speed Capability: The open design, combined with a precision-stamped stainless steel cage, contributes to a high limiting speed of 85,000 rpm, making it a capable high-speed bearing for miniature applications.
- Precision & Rigidity: Manufactured to P0 tolerance class with tight bore and outside diameter tolerances, this bearing ensures smooth, precise rotation and minimal runout, which is critical for accurate positioning systems.
- Radial Load Capacity: With a dynamic load rating of 80 lbf and a static load rating of 25 lbf, it is engineered to handle significant radial forces for its compact size, ensuring long service life under load.
D/W R2 Bearing Typical Application Areas
- Precision Instruments: Optical encoders, medical devices, and laboratory equipment where high-speed, low-noise, and corrosion resistance are critical.
- Small Motors and Gearboxes: Used in miniature DC motors, stepper motors, and precision gearheads that require reliable, long-life bearing support.
- Office Automation Equipment: High-speed scanners, printers, and copiers.
- Robotics and Automation: Joints and guides in small robotic arms and linear actuation systems.
- Aerospace and Defense Subsystems: Guidance systems, instrumentation, and other critical components where reliability and material compliance are mandatory.
