R2-5
R Series Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
R2-5
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.5 g
Tolerance class
ABEC1
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
0.125"
Bore diameter tolerance
-0.0003" to 0"
Outside diameter
0.3125"
Outside diameter tolerance
-0.0003" to 0"
Width
0.1094"
Width tolerance
-0.005" to 0"
Inner Ring Dimensions
Inner ring type
Standard
Ball & Washer Dimensions
Ball diameter
0.06252"
Ball quantity
6
Performance
Temperature range
-86 to 230 °F
Radial dynamic load rating
107 lbf
Radial static load rating
32 lbf
Limiting speed
60 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:
$ 1.13
/ each
In Stock
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R2-5 Bearing Product Overview & Core Advantages
The R2-5 is a high-precision, single row deep groove ball bearing designed for demanding applications requiring reliable performance in compact spaces. Manufactured to ABEC1 precision standards, it offers excellent radial load capacity and smooth operation. Its open design allows for versatile lubrication options, making it suitable for a wide range of industrial machinery and precision instruments. The use of high-grade chrome steel for rings and balls ensures durability and long service life.
R2-5 Bearing Model Code Explained, Specifications & Naming Convention
| Code Element | Technical Meaning |
|---|---|
| R2-5 | Standard inch series designation, indicating a bore diameter of 1/8" (0.125") |
| Open (Seal Type) | No integral seals or shields, allowing for custom lubrication schemes and higher potential speeds |
| ABEC1 | Precision tolerance class ensuring consistent running accuracy |
| MC3 | Specified radial internal clearance group (0.00008" to 0.0005") |
R2-5 Bearing Structural Features & Performance Benefits
- Optimized Radial Load Capacity: The deep groove raceway and six precisely sized balls enable efficient handling of the 107 lbf dynamic radial load rating, making it ideal for applications with significant radial forces.
- High-Speed Capability: The stainless steel cage ensures ball guidance and stability, contributing to a limiting speed of 60,000 rpm. The open construction minimizes friction and heat generation at high rotational velocities.
- Precision Engineering: Manufactured to ABEC1 tolerances with tight dimensional control on the bore diameter, outside diameter, and width, ensuring predictable performance and ease of installation.
- Material Integrity: Components made from chrome steel offer high hardness and wear resistance, while the stainless steel cage provides excellent corrosion resistance, enhancing overall bearing longevity.
R2-5 Bearing Typical Application Areas
- Small Electric Motors and spindles
- Precision Instruments and optical devices
- Office automation equipment (e.g., printers, scanners)
- Medical devices and dental handpieces
- Robotics and small gearboxes
