D/W R144
D/W Series Stainless Steel Miniature Bearings
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Part No.
Part No.
D/W R144
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.0003 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
0.25"
Outside diameter tolerance
-0.0007" to -0.00031"
Width
0.0937"
Width tolerance
-0.005" to 0"
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
37 lbf
Radial static load rating
11 lbf
Limiting speed
100 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 R144 Bearing Product Overview & Core Advantages
The R144 is a precision single row deep groove ball bearing designed for high-performance applications requiring exceptional reliability. Manufactured entirely from stainless steel, it offers excellent corrosion resistance. This bearing is engineered to primarily handle radial loads and is characterized by its compact inch dimensions (0.125" bore, 0.25" OD), making it ideal for space-constrained assemblies. Its open design and P0 tolerance class ensure smooth operation and consistent performance in demanding environments.
D/W R144 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| R144 | The base model number, defining the core bearing dimensions and internal geometry. |
| No Suffix | Indicates an open (unsealed) bearing, allowing for custom lubrication or high-speed applications where internal friction must be minimized. |
D/W R144 Bearing Structural Features & Performance Benefits
- All-Stainless-Steel Construction: The rings, balls, and stainless steel cage provide superior corrosion resistance, making the bearing suitable for harsh environments and ensuring long-term operational integrity.
- High-Speed Capability: The open design and precision-ground components contribute to a high limiting speed of 100,000 rpm, suitable for demanding rotational applications.
- Precision & Reliability: Manufactured to ABEC 1 (P0) tolerance class with a standard CN radial internal clearance, this bearing delivers consistent running accuracy and low vibration.
- Radial Load Capacity: Engineered to efficiently support radial dynamic loads up to 37 lbf and static loads up to 11 lbf, ensuring robust performance.
- Wide Temperature Range: Operates effectively within a temperature range of -30°C to 120°C, accommodating various operational conditions.
D/W R144 Bearing Typical Application Areas
This miniature bearing is ideally suited for applications requiring compact size, high speed, and corrosion resistance, including:
- Precision Instruments and optical encoders
- Small electric motors and gearboxes
- Medical devices and dental handpieces
- Robotics and miniature automation systems
- Radio-controlled models and drones
