D/W R155
D/W Series Stainless Steel Miniature Bearings
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Part No.
Part No.
D/W R155
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.0005 kg
Tolerance class
P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
0.15618"
Bore diameter tolerance
-0.00019" to 0.00019"
Outside diameter
0.31252"
Outside diameter tolerance
-0.0007" to -0.00031"
Width
0.10941"
Width tolerance
-0.005" to 0"
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
46 lbf
Radial static load rating
17 lbf
Limiting speed
90 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
No drawings available at the moment, will be launched soon
In Stock
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D/W R155 Bearing Product Overview & Core Advantages
The D/W R155 is a precision miniature ball bearing designed for demanding applications requiring high reliability and compact design. As a single row deep groove ball bearing, it excels at handling radial loads while also accommodating moderate axial loads in both directions. Manufactured entirely from stainless steel, it offers excellent corrosion resistance and is suitable for a wide temperature range from -30°C to 120°C. Its open design and P0 tolerance class make it a versatile and cost-effective solution for high-speed mechanisms and precision instruments.
D/W R155 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| D/W | Manufacturer prefix (D/W, a brand known for precision miniature bearings). |
| R155 | The bearing size designation in the manufacturer's numbering system. |
| N/A (Open) | The bearing features an open (unsealed) construction, allowing for custom lubrication or operation in clean environments. |
D/W R155 Bearing Structural Features & Performance Benefits
- All-Stainless-Steel Construction: The rings, balls, and cage are made from stainless steel, providing superior corrosion resistance and durability in harsh environments, contributing to a long service life.
- High-Speed Capability: With a limiting speed of 90,000 rpm, this bearing is engineered for high-speed applications. The stainless steel cage ensures stable operation at these elevated speeds.
- Precision & Reliability: Built to P0 tolerance class and standard CN radial internal clearance, this bearing offers consistent performance and running accuracy, which is critical for precision assemblies.
- Compact & Lightweight: With a minimal cross-section and a weight of only 0.0005 kg, it is ideal for space-constrained and weight-sensitive designs without compromising on load capacity.
D/W R155 Bearing Typical Application Areas
- Precision small motors and miniature gearboxes
- Medical and dental hand tools
- Optical encoders and scanners
- Instrumentation and control devices
- RC models and drones
- Office automation equipment
