SR155
SR Series Stainless Steel Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SR155
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.51 g
Tolerance class
ABEC1
Seal type
Open
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
0.1094"
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
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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SR155 Bearing Product Overview & Core Advantages
The SR155 is a precision-engineered single row deep groove ball bearing designed for high-performance applications requiring reliable radial load capacity. Manufactured entirely from stainless steel, it offers excellent corrosion resistance and is suitable for a wide temperature range from -86 to 230 °F. Its compact design and ABEC1 precision class make it an ideal component for applications demanding smooth operation and long service life in challenging environments.
SR155 Bearing Model Code Explained, Specifications & Naming Convention
| Code Element | Technical Meaning |
|---|---|
| SR | Standard Bearing Series Designation |
| 155 | Specific size code denoting bore diameter, outside diameter, and width dimensions in inches |
| Open (Seal Type) | No integral seals or shields, allowing for higher limiting speeds and custom lubrication solutions |
SR155 Bearing Structural Features & Performance Benefits
- High-Speed Capability: The open design and optimized internal geometry enable a high limiting speed of 47,700 rpm, making it suitable for high-rotation applications.
- Corrosion Resistance: Constructed entirely from stainless steel (rings, balls, and cage), this bearing is ideal for harsh environments, including those with exposure to moisture and chemicals.
- Precision Performance: Manufactured to ABEC1 tolerance class with a controlled radial internal clearance (MC3 group), ensuring consistent running accuracy and low vibration.
- Robust Load Capacity: Engineered to handle significant radial dynamic loads (62 lbf) and radial static loads (24 lbf) for its compact size.
SR155 Bearing Typical Application Areas
- Precision Instruments and medical devices
- Small electric motors and gearboxes
- Office automation equipment and computer peripherals
- Food processing and packaging machinery
- Laboratory and analytical equipment
