R3
R Series Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
R3
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
2.21 g
Tolerance class
ABEC1
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
0.1875"
Bore diameter tolerance
-0.0003" to 0"
Outside diameter
0.5"
Outside diameter tolerance
-0.0003" to 0"
Width
0.1562"
Width tolerance
-0.005" to 0"
Inner Ring Dimensions
Inner ring type
Standard
Ball & Washer Dimensions
Ball diameter
0.0937"
Ball quantity
7
Performance
Temperature range
-86 to 230 °F
Radial dynamic load rating
249 lbf
Radial static load rating
88 lbf
Limiting speed
43 X 1000 rpm
Lubrication
Required
Radial internal clearance
0.00008" to 0.0005"
Radial internal clearance
MC3
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Stainless Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 0.93
/ each
In Stock
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
R3 Bearing Product Overview & Core Advantages
The R3 bearing is a high-precision, single row deep groove ball bearing designed for reliable performance in a wide range of industrial applications. Manufactured to ABEC1 precision class standards, this bearing excels in handling radial loads with high efficiency. Its compact inch-series design, featuring a 0.1875" bore and 0.5" outside diameter, makes it an ideal choice for applications where space is at a premium. Constructed from durable chrome steel with a stainless steel cage, it offers a robust solution for demanding environments, ensuring long service life and consistent operation.
R3 Bearing Model Code Explained, Specifications & Naming Convention
| Code Element | Technical Meaning |
|---|---|
| R3 | Standard bearing designation in the inch series, indicating specific bearing dimensions. |
| Open (Seal Type) | No integral seals or shields. This allows for higher limiting speeds and requires external sealing in contaminated environments. |
| ABEC1 | The tolerance class defining the precision of bearing dimensions and running accuracy. |
| MC3 | Specifies the radial internal clearance group, optimized for general operating conditions. |
R3 Bearing Structural Features & Performance Benefits
- Optimized Load Capacity: The single row deep groove raceway and complement of 7 precision balls enable efficient handling of the specified radial dynamic load rating of 249 lbf and radial static load rating of 88 lbf.
- High-Speed Capability: The lightweight, corrosion-resistant stainless steel cage effectively guides the balls, contributing to a high limiting speed of 43,000 rpm and ensuring stable operation.
- Durable Construction: Rings and balls made from high-grade chrome steel provide excellent wear resistance and fatigue life, suitable for a broad temperature range from -86 to 230 °F.
- Precision Engineering: Manufactured to ABEC1 tolerances with controlled radial internal clearance, this bearing delivers smooth, low-vibration, and low-noise performance.
R3 Bearing Typical Application Areas
This versatile R3 bearing is ideally suited for:
- Small Electric Motors and Gearboxes
- Precision Instruments and Optical Devices
- Office Automation Equipment (e.g., printers, scanners)
- Medical Devices and Dental Handpieces
- Radio Control Models and Small Power Tools
