RW3zz
RW Series Extended Inner Ring Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
RW3zz
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
2.95 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
0.5"
Outside diameter tolerance
-0.0003" to 0"
Width
0.196"
Width tolerance
-0.005" to 0"
Inner Ring Dimensions
Inner ring type
Extended
Inner ring width
0.2273"
Shoulder diameter inner ring
0.276"
Ball & Washer Dimensions
Ball diameter
0.0937"
Ball quantity
7
Performance
Temperature range
-86 to 230 °F
Radial dynamic load rating
249 lbf
Radial static load rating
88 lbf
Limiting speed
43 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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RW3zz Bearing Product Overview & Core Advantages
The RW3zz is a single row deep groove ball bearing designed for high-performance applications requiring reliable radial load capacity and consistent operation. This inch-series bearing features a shielded design for contaminant protection and is constructed from high-grade chrome steel for durability. Its compact dimensions and extended inner ring facilitate easy installation and secure positioning, making it an ideal choice for applications demanding precision and long service life in challenging environments.
RW3zz Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| RW3 | The base bearing designation, indicating the specific inch size series. |
| zz | Signifies that the bearing is equipped with shields on both sides (2Z). This provides effective protection against solid contaminants while allowing for higher rotational speeds compared to contact seals. |
RW3zz Bearing Structural Features & Performance Benefits
- Optimized Load Capacity: The single row deep groove raceway and seven precision chrome steel balls provide excellent radial load handling, with a dynamic rating of 249 lbf and a static rating of 88 lbf.
- Shielded Protection: The stainless steel shields (zz) retain lubricant and exclude larger contaminants, enhancing bearing life and reliability without the significant speed penalty of contact seals.
- High-Speed Capability: The lightweight stainless steel cage and optimized internal geometry contribute to a high limiting speed of 43,000 rpm, making it suitable for demanding high-speed applications.
- Precision & Stability: Manufactured to ABEC1 tolerance class with a controlled radial internal clearance (MC3), ensuring smooth and precise operation with minimal vibration and noise.
- Extended Inner Ring: The extended inner ring design simplifies axial location and provides a larger contact surface for secure mounting.
RW3zz Bearing Typical Application Areas
- Small Electric Motors and Spindles
- Precision Instruments and Medical Devices
- Office Automation Equipment (e.g., printers, scanners)
- High-Speed Fans and Blowers
- Radio Control Models and Drones
- Textile Machinery
