SRW4zz
SRW Series Stainless Steel Extended Inner Ring Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SRW4zz
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
4.54 g
Tolerance class
ABEC1
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
0.25"
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
Extended
Inner ring width
0.2273"
Shoulder diameter inner ring
0.364"
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
0.00008" to 0.0005"
Radial internal clearance
MC3
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:
$ 3.47
/ each
In Stock
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SRW4zz Bearing Product Overview & Core Advantages
The SRW4zz is a single row deep groove ball bearing designed for exceptional performance in radial load applications. Constructed entirely from stainless steel, it offers superior corrosion resistance and durability. Its compact inch series design, featuring a 0.25" bore diameter and 0.625" outside diameter, makes it ideal for space-constrained, high-precision assemblies. The inclusion of non-contact shields (zz) protects against contamination while maintaining a high limiting speed of 34,200 rpm, establishing it as a reliable component for demanding operational environments.
SRW4zz Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning | Benefit |
|---|---|---|
| zz | Non-contact steel shields on both sides. | Provides effective protection from dust and debris with minimal impact on rotational speed and low friction. |
| W | Extended inner ring width. | Offers a larger contact surface for secure mounting and improved axial location. |
SRW4zz Bearing Structural Features & Performance Benefits
- Robust Stainless Steel Construction: All components, including rings, balls, cage, and shields, are made from 300 series stainless steel, ensuring excellent corrosion resistance and long service life in harsh environments.
- Optimized Load Capacity: The deep groove raceway and 8 precision balls are engineered to handle significant radial dynamic loads (255 lbf) efficiently.
- High-Speed Capability: The combination of a stainless steel cage, non-contact shields, and optimized internal geometry allows for a high limiting speed, making it suitable for high-RPM applications.
- Precision & Stability: Manufactured to ABEC1 tolerance class with a controlled radial internal clearance (MC3), ensuring smooth and consistent operation with minimal vibration.
- Broad Temperature Range: Operates reliably across a wide temperature spectrum from -86 to 230 °F.
SRW4zz Bearing Typical Application Areas
This bearing is widely used in applications requiring compact size, corrosion resistance, and high-speed performance. Key sectors include:
- Precision Medical Devices (e.g., surgical hand tools, dental drills)
- Food Processing & Packaging Machinery
- Small Motors and Gearboxes
- Optical Encoders and Precision Instruments
- Office Automation Equipment (e.g., printers, scanners)
