FR2
FR Series Flanged Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
FR2
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
1.2 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
0.375"
Outside diameter tolerance
-0.0003" to 0"
Width
0.1562"
Width tolerance
-0.005" to 0"
Inner Ring Dimensions
Inner ring type
Standard
Outer Ring Dimensions
Flange outer diameter
0.44"
Flange thickness
0.03"
Ball & Washer Dimensions
Ball diameter
0.06252"
Ball quantity
7
Performance
Temperature range
-86 to 230 °F
Radial dynamic load rating
121 lbf
Radial static load rating
39 lbf
Limiting speed
56 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:
$ 1.32
/ each
In Stock
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
FR2 Bearing Product Overview & Core Advantages
The FR2 series represents a high-precision inch-series ball bearing engineered for demanding radial load applications. This single row deep groove ball bearing features an open design and is manufactured to ABEC1 precision class standards, ensuring reliable performance in compact assemblies. Its primary advantages include a high limiting speed of 56,000 rpm and a robust radial dynamic load rating of 121 lbf, making it an ideal solution for applications requiring high rotational accuracy and durability in a minimal footprint.
FR2 Bearing Model Code Explained, Specifications & Naming Convention
| Code Element | Technical Significance |
|---|---|
| FR2 | Series designation for this specific inch-size, open deep groove ball bearing. |
| Open | No integral seals or shields, allowing for higher speeds and custom lubrication schemes. |
| ABEC1 | Defines the precision tolerance class for bore, outer diameter, and width. |
| MC3 | Specifies the radial internal clearance group (0.00008" to 0.0005"). |
FR2 Bearing Structural Features & Performance Benefits
- Optimized Internal Geometry: The deep groove raceway and complement of seven precision chrome steel balls enable efficient handling of radial loads and moderate axial loads in both directions.
- High-Speed Capability: The lightweight stainless steel cage and open construction minimize friction and turbulence, directly contributing to the high limiting speed.
- Precision & Rigidity: Manufactured to ABEC1 standards with tight dimensional tolerances, this bearing provides consistent running accuracy and contributes to overall system stiffness.
- Material Integrity: Constructed from chrome steel rings and balls, the bearing offers excellent wear resistance and long-term dimensional stability across its operating temperature range of -86 to 230 °F.
FR2 Bearing Typical Application Areas
This bearing is ideally suited for precision mechanisms and high-speed drives, including:
- Small precision spindles and motor shafts
- Medical and dental handpieces
- Optical encoders and instrumentation
- Computer disk drives and miniature fans
- Office automation equipment
