SR1zz
SR Series Stainless Steel Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SR1zz
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
0.19 g
Tolerance class
ABEC1
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
0.05556"
Bore diameter tolerance
-0.0003" to 0"
Outside diameter
0.1875"
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
6
Performance
Temperature range
-86 to 230 °F
Radial dynamic load rating
40 lbf
Radial static load rating
11 lbf
Limiting speed
81 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:
$ 15.88
/ each
In Stock
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SR1zz Bearing Product Overview & Core Advantages
The SR1zz is a precision miniature ball bearing engineered for demanding applications requiring compact size and reliable performance. As a single row radial ball bearing, it is designed to primarily support radial loads with high efficiency. Constructed entirely from stainless steel, it offers excellent corrosion resistance, making it suitable for harsh environments. Its shielded design helps retain lubrication and exclude larger contaminants, contributing to a longer service life and consistent operation in a wide temperature range from -86 to 230 °F.
SR1zz Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| SR1 | Indicates the bearing series, typically referring to a specific design and size range of miniature radial ball bearings. |
| zz | Denotes that the bearing is equipped with shields on both sides. This provides basic protection against large particulate contaminants while allowing for higher limiting speeds compared to contact seals. |
SR1zz Bearing Structural Features & Performance Benefits
- Compact & Lightweight Design: With a bore diameter of 0.05556" and a weight of only 0.19 g, this bearing is ideal for space-constrained and weight-sensitive applications like miniature motors and precision instruments.
- Corrosion Resistance: The use of stainless steel for all critical components (rings, balls, cage, and shield) ensures reliable performance in corrosive or wash-down environments.
- Optimized Internal Geometry: Featuring 6 precision balls, the bearing provides smooth operation and consistent load ratings (40 lbf dynamic, 11 lbf static).
- ABEC1 Precision: Manufactured to ABEC1 tolerance class, this bearing offers a good balance of precision and cost-effectiveness for a wide range of industrial applications.
- High-Speed Capability: The non-contact shield design and optimized internal clearance (MC3 group) contribute to a high limiting speed of 81,000 rpm.
SR1zz Bearing Typical Application Areas
- Small Precision Electric Motors
- Medical and Dental Handpieces
- Optical Encoders and Scanners
- RC Vehicles and Drones
- Instrumentation and Control Devices
- Office Automation Equipment
