SR4A
SR Series Stainless Steel Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SR4A
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
7.48 g
Tolerance class
ABEC1
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
0.25"
Bore diameter tolerance
-0.0003" to 0"
Outside diameter
0.75"
Outside diameter tolerance
-0.0003" to 0"
Width
0.2188"
Width tolerance
-0.005" to 0"
Inner Ring Dimensions
Inner ring type
Standard
Ball & Washer Dimensions
Ball diameter
0.1378"
Ball quantity
6
Performance
Temperature range
-86 to 230 °F
Radial dynamic load rating
401 lbf
Radial static load rating
145 lbf
Limiting speed
32.4 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
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SR4A Bearing Product Overview & Core Advantages
The SR4A is a single row deep groove ball bearing designed for exceptional performance in radial load applications. Manufactured entirely from stainless steel, it offers superior corrosion resistance, making it ideal for demanding environments. This bearing features an open design for versatile lubrication options and adheres to ABEC1 precision tolerances, ensuring reliable and smooth operation. Its compact dimensions and high limiting speed of 32,400 rpm make it a robust and efficient solution for a wide range of industrial equipment.
SR4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| SR4A | Standard series designation for a specific inch-sized, single row deep groove ball bearing. |
| Open (Seal Type) | No integral seals or shields. This allows for higher speeds and custom lubrication but requires a clean operating environment or external sealing. |
| ABEC1 | The tolerance class, indicating standard precision levels for runout and dimensional accuracy. |
| MC3 | Specifies the radial internal clearance group, optimized for general operating conditions. |
SR4A Bearing Structural Features & Performance Benefits
- All-Stainless-Steel Construction: The rings, balls, and cage are made from stainless steel, providing excellent resistance to rust and corrosion, which is critical for applications exposed to moisture or chemicals.
- Deep Groove Raceway: The geometry of the deep groove raceway is engineered to support high radial dynamic load ratings (401 lbf) and moderate axial loads in both directions.
- High-Speed Capability: The combination of a stainless steel cage, six precision balls, and an open design contributes to a high limiting speed, making it suitable for rapid rotation applications.
- Precision Engineering: Manufactured to ABEC1 standards with controlled radial internal clearance (0.00008" to 0.0005"), this bearing ensures consistent performance, low vibration, and smooth running.
- Wide Temperature Range: Operates effectively in temperatures from -86 to 230 °F, accommodating various industrial and commercial environments.
SR4A Bearing Typical Application Areas
- Medical and Dental Equipment
- Food and Beverage Processing Machinery
- Precision Instruments and Optical Devices
- Small Electric Motors and Fans
- Conveyor Systems in Corrosive Environments
- Agricultural Sprayers and Machinery
