RW166zz
RW Series Extended Inner Ring Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
RW166zz
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
Extended
Inner ring width
0.1562"
Shoulder diameter inner ring
0.235"
Ball & Washer Dimensions
Ball diameter
0.0625"
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
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:
$ 2.89
/ each
In Stock
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RW166zz Bearing Product Overview & Core Advantages
The RW166zz is a precision miniature ball bearing designed for applications demanding compact size and reliable performance. As a single row radial ball bearing with shielded construction, it excels in handling moderate radial loads while offering protection from contamination. Its extended inner ring facilitates easier mounting and axial location. Manufactured to ABEC1 precision standards, this bearing is ideal for high-speed, low-noise operations in compact assemblies, providing a robust solution for demanding miniature applications.
RW166zz Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| RW166 | Basic bearing designation, indicating the specific size series (inch) and dimensions. |
| zz | Denotes shielded construction on both sides. The "z" suffix indicates a non-contact, metallic shield that protects the bearing interior from large contaminants while minimizing friction, contributing to the high limiting speed. |
RW166zz Bearing Structural Features & Performance Benefits
- Compact & Lightweight Design: With a bore diameter of 0.1875" and a weight of only 0.85 g, this bearing is engineered for space-constrained and weight-sensitive applications.
- High-Speed Capability: The combination of a stainless steel cage, shielded design, and MC3 radial internal clearance enables a high limiting speed of 50,000 rpm, making it suitable for demanding high-velocity operations.
- Robust Load Capacity: Manufactured from chrome steel for both rings and balls, the bearing offers a dynamic load rating of 136 lbf and a static load rating of 49 lbf, ensuring durability under radial stresses.
- Enhanced Protection: The 300 Series Stainless Steel shields provide effective sealing against dust and debris, extending bearing life and reducing maintenance needs in challenging environments.
- Precision Performance: Built to ABEC1 tolerance class with a controlled radial internal clearance, it delivers smooth, consistent, and low-vibration operation.
RW166zz Bearing Typical Application Areas
This bearing is widely used in precision instruments and compact machinery, including:
- 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 Apparatus
- Robotics and Miniature Actuators
