FR166
FR Series Flanged Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
FR166
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.9 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
0.375"
Outside diameter tolerance
-0.0003" to 0"
Width
0.125"
Width tolerance
-0.005" to 0"
Inner Ring Dimensions
Inner ring type
Standard
Outer Ring Dimensions
Flange outer diameter
0.422"
Flange thickness
0.023"
Ball & Washer Dimensions
Ball diameter
0.06252"
Ball quantity
8
Performance
Temperature range
-86 to 230 °F
Radial dynamic load rating
136 lbf
Radial static load rating
49 lbf
Limiting speed
50 X 1000 rpm
Lubrication
Required
Radial internal clearance
MC3
Radial internal clearance
0.00008" to 0.0005"
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
FR166 Bearing Product Overview & Core Advantages
The FR166 is a single row deep groove ball bearing designed for reliable performance in compact, precision applications. Engineered to primarily handle radial loads, this inch-series bearing features an open design that facilitates direct lubrication for optimal performance across a wide temperature range. Its construction with chrome steel rings and a stainless steel cage ensures durability and consistent operation, making it an ideal choice for applications demanding high rotational accuracy and compact envelope dimensions.
FR166 Bearing Model Code Explained, Specifications & Naming Convention
| Code Element | Technical Meaning |
|---|---|
| FR166 | Manufacturer's base model number for this specific bearing size and series. |
| Open (Seal Type) | No integral seals or shields. Allows for direct lubrication and is suitable for clean environments or custom sealing solutions. |
| ABEC1 | Specifies the precision class, indicating standard tolerances for runout and dimensional accuracy. |
| MC3 (Radial Internal Clearance) | Defines a specific range of internal clearance (0.00008" to 0.0005") suitable for general operating conditions. |
FR166 Bearing Structural Features & Performance Benefits
- Deep Groove Raceway & High-Capacity Design: The geometry of the deep groove raceways enables efficient handling of radial loads and moderate axial loads in both directions, providing versatile performance.
- Optimized Cage & Ball Complement: The stainless steel cage securely retains 8 precision balls, ensuring smooth rotation and stable operation at the specified limiting speed of 50,000 rpm.
- Precision Manufacturing: Manufactured to ABEC1 tolerance class with tight dimensional control on the bore diameter (0.1875") and outside diameter (0.375"), guaranteeing reliable fit and function.
- Robust Material Selection: The use of chrome steel for rings and balls, combined with a stainless steel cage, provides excellent resistance to wear and corrosion, contributing to a long service life.
FR166 Bearing Typical Application Areas
- Small Electric Motors and Gearmotors
- Precision Instruments and Optical Encoders
- Office Automation Equipment (e.g., Printers, Scanners)
- Medical Devices and Laboratory Equipment
- Radio-Controlled Models and Miniature Drives
