SR155zz
SR Series Stainless Steel Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SR155zz
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
Standard
Ball & Washer Dimensions
Ball diameter
0.03941"
Ball quantity
10
Performance
Temperature range
-86 to 230 °F
Radial dynamic load rating
62 lbf
Radial static load rating
24 lbf
Limiting speed
47.7 X 1000 rpm
Lubrication
Required
Radial internal clearance
MC3
Radial internal clearance
0.00008" to 0.0005"
Materials
Ring material
Stainless Steel
Ball material
Stainless 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:
$ 1.35
/ each
In Stock
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SR155zz Bearing Product Overview & Core Advantages
The SR155zz is a single row deep groove ball bearing designed for high performance in compact applications. Manufactured entirely from stainless steel, it offers excellent corrosion resistance. A key feature is its integral shield (zz) on both sides, which protects against contamination while allowing for high-speed operation. This bearing is engineered to primarily handle radial loads and is characterized by its ABEC1 precision class, making it a reliable and cost-effective solution for applications demanding smooth operation and long service life.
SR155zz Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| SR155 | The base bearing designation, indicating a specific size series with a 0.15625" bore and 0.3125" outside diameter. |
| zz | Signifies that the bearing is equipped with non-contact metal shields on both sides. This provides effective protection against dust and other particulates without significantly increasing friction, contributing to the high limiting speed. |
SR155zz Bearing Structural Features & Performance Benefits
- Robust Stainless Steel Construction: All components, including rings, balls, cage, and shields, are made from stainless steel. This provides superior corrosion resistance, essential for operation in harsh environments and within a wide temperature range of -86 to 230 °F.
- Optimized Internal Geometry: The deep groove raceway and the use of ten precision balls (Ball quantity: 10) ensure smooth rotation and efficient radial load carrying capacity, with a dynamic load rating of 62 lbf.
- High-Speed Capability: The combination of the low-friction stainless steel cage and non-contact shields allows for a high limiting speed of 47,700 rpm, making it suitable for demanding, high-RPM applications.
- Precision and Reliability: Manufactured to ABEC1 tolerance class with a controlled radial internal clearance (MC3), this bearing delivers consistent and reliable performance, minimizing vibration and noise.
SR155zz Bearing Typical Application Areas
The SR155zz is ideally suited for a wide range of compact and precision devices, including:
- Small Electric Motors: Used in high-speed fans, drones, and precision tools.
- Medical and Dental Equipment: Ideal for handpieces, pumps, and scanners where corrosion resistance and reliability are critical.
- Office Automation Equipment: Found in printers, scanners, and copiers.
- Instrumentation and Control Systems: Used in encoders, stepper motors, and other precision measuring devices.
