SR3A
SR Series Stainless Steel Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SR3A
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
5.08 g
Tolerance class
ABEC1
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
0.1875"
Bore diameter tolerance
-0.0003" to 0"
Outside diameter
0.625"
Outside diameter tolerance
-0.0003" to 0"
Width
0.196"
Width tolerance
-0.005" to 0"
Inner Ring Dimensions
Inner ring type
Standard
Ball & Washer Dimensions
Ball diameter
0.0937"
Ball quantity
8
Performance
Temperature range
-86 to 230 °F
Radial dynamic load rating
255 lbf
Radial static load rating
101 lbf
Limiting speed
34.2 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:
$ 1.12
/ each
In Stock
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
SR3A Bearing Product Overview & Core Advantages
The SR3A is a high-precision, single row deep groove ball bearing designed for demanding applications requiring reliable radial load capacity and smooth operation. Manufactured entirely from stainless steel, it offers excellent corrosion resistance and is suitable for a wide temperature range from -86 to 230 °F. Its open design allows for versatile lubrication options, while its ABEC1 tolerance class ensures consistent performance for general precision duties. This bearing is an ideal, cost-effective solution for compact assemblies where dependable radial support is paramount.
SR3A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| SR3A | Standard designation for this specific inch-series, single row deep groove ball bearing. |
| Open (Seal Type) | No integral seals or shields. This allows for higher limiting speeds and custom lubrication schemes but requires a clean operating environment or external sealing. |
| ABEC1 | Defines the precision tolerance class, ensuring dimensional accuracy and runout within standardized limits for reliable performance. |
| MC3 | Specifies the radial internal clearance group (0.00008" to 0.0005"), which is optimized for general operating conditions. |
SR3A Bearing Structural Features & Performance Benefits
- All-Stainless-Steel Construction: The rings, balls, and cage are manufactured from stainless steel, providing superior corrosion resistance and making the bearing suitable for harsh environments, including those requiring washdown or exposure to certain chemicals.
- Optimized Deep Groove Raceway: The geometry of the raceways is engineered for efficient radial load transfer, contributing to the bearing's dynamic load rating of 255 lbf and long service life.
- High-Speed Capability: The open design, combined with a precision-stamped stainless steel cage, minimizes friction and allows for a high limiting speed of 34,200 rpm.
- Standard Internal Clearance (MC3): This clearance group provides an optimal balance, preventing excessive preload while minimizing play, resulting in smooth and quiet operation under normal loads and speeds.
SR3A Bearing Typical Application Areas
- Precision Small Motors and Spindles
- Medical and Dental Handpieces
- Optical and Precision Instrumentation
- Food Processing and Packaging Machinery
- Office Automation Equipment (e.g., printers, scanners)
- Radio Control Models and Drones
