R166zz
R Series Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
R166zz
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.85 g
Tolerance class
ABEC1
Seal type
Shielded
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
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
0.00008" to 0.0005"
Radial internal clearance
MC3
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Stainless Steel
Shield material
300 Series 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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R166zz Bearing Product Overview & Core Advantages
The R166zz is a precision miniature ball bearing designed for applications demanding high reliability in compact spaces. As a single row radial ball bearing with integral shields, it offers excellent performance for radial loads and moderate axial loads in one direction. Its inch-series dimensions and ABEC1 precision class make it an ideal component for high-speed, low-noise operations where consistent performance is critical. The bearing is pre-lubricated and features stainless steel components for enhanced durability and corrosion resistance.
R166zz Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| R | Ring material: Chrome Steel (Standard) |
| 166 | Bore size code (0.1875") |
| zz | Bearing is shielded on both sides with 300 Series Stainless Steel |
R166zz Bearing Structural Features & Performance Benefits
- High-Speed Capability: The combination of a stainless steel cage, eight precision balls, and optimized internal geometry enables a limiting speed of 50,000 rpm, making it suitable for high-speed applications.
- Robust Load Capacity: With a dynamic load rating of 136 lbf and a static load rating of 49 lbf, this bearing provides reliable support for significant radial loads in a compact form factor.
- Contaminant Protection: The non-contact zz shields on both sides effectively protect the bearing from dust and other contaminants while minimizing friction, contributing to long service life and consistent performance.
- Precision & Stability: Manufactured to ABEC1 tolerance standards and featuring a controlled MC3 radial internal clearance, this bearing ensures smooth, low-vibration operation essential for precision instruments.
- Corrosion Resistance: The use of stainless steel for the cage and shields provides enhanced resistance to corrosion, suitable for a wide operating temperature range from -86 to 230 °F.
R166zz Bearing Typical Application Areas
- Small Precision Motors and Spindles
- Medical Devices and Dental Handpieces
- Optical Encoders and Scanning Equipment
- Office Automation Equipment (e.g., Printers, Scanners)
- Instrumentation and Laboratory Equipment
- Robotics and Small Actuators
