RW155zz
RW Series Extended Inner Ring Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
RW155zz
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.61 g
Tolerance class
ABEC1
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
0.15625"
Bore diameter tolerance
-0.0003" to 0"
Outside diameter
0.3125"
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
0.221"
Ball & Washer Dimensions
Ball diameter
0.0394"
Ball quantity
10
Performance
Temperature range
-86 to 230 °F
Radial dynamic load rating
69 lbf
Radial static load rating
27 lbf
Limiting speed
53 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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RW155zz Bearing Product Overview & Core Advantages
The RW155zz is a precision miniature ball bearing designed for demanding applications requiring high reliability in compact spaces. As a single row radial ball bearing with shielded construction, it excels at handling radial loads while offering smooth operation. Its inch-series dimensions and ABEC1 precision class make it an ideal component for high-performance mechanisms where consistent accuracy and limiting speeds up to 53,000 rpm are critical.
RW155zz Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| RW155 | Basic bearing designation, indicating the specific bearing size and series. |
| zz | Denotes shielded construction on both sides. The shields protect against contamination while allowing for high-speed operation. |
RW155zz Bearing Structural Features & Performance Benefits
- High-Speed Capability: The combination of a stainless steel cage, 10 precision balls, and shielded design enables a high limiting speed of 53,000 rpm, making it a true high-speed bearing.
- Robust Construction: Manufactured from chrome steel for rings and balls, and 300 series stainless steel for shields, ensuring durability and corrosion resistance within a temperature range of -86 to 230 °F.
- Precision Performance: Built to ABEC1 tolerance class with a controlled radial internal clearance (MC3: 0.00008" to 0.0005") for smooth, low-vibration, and accurate rotation.
- Extended Inner Ring: The design features an extended inner ring with a shoulder diameter of 0.221", facilitating easier mounting and secure axial location.
RW155zz Bearing Typical Application Areas
- Small precision motors and spindles
- Medical and dental handpieces
- Optical encoders and scanners
- Instrumentation and laboratory equipment
- High-speed automation and robotics
- Small fans and pumps
