R3zz
R Series Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
R3zz
Basic Information
Bearing type
Ball
System of measurement
Inch
Construction
Single Row
Weight
2.95 g
Tolerance class
ABEC1
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
0.1875"
Bore diameter tolerance
-0.0003" to 0"
Outside diameter
0.5"
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
7
Performance
Temperature range
-86 to 230 °F
Radial dynamic load rating
249 lbf
Radial static load rating
88 lbf
Limiting speed
43 X 1000 rpm
Lubrication
Required
Radial internal clearance
0.00008" to 0.0005"
Radial internal clearance
MC3
Materials
Ring material
Chrome Steel
Ball material
Chrome 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:
$ 0.93
/ each
In Stock
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R3zz Bearing Product Overview & Core Advantages
The R3zz is a high-precision, single row deep groove ball bearing designed for reliable performance in demanding applications. Manufactured to ABEC1 precision class standards, it delivers excellent rotational accuracy and smooth operation. Its compact inch-series design (0.1875" bore) offers a space-saving solution without compromising on radial load capacity (249 lbf dynamic). The inclusion of stainless steel shields provides effective contaminant protection, making it a robust choice for various industrial settings requiring consistent, long-lasting performance.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| R | Inch series bearing designation |
| 3 | Bore size code (0.1875") |
| zz | Double-sided stainless steel shields for contaminant exclusion |
R3zz Bearing Structural Features & Performance Benefits
- Deep Groove Geometry & High-Capacity Design: The optimized raceway profile and 7 high-precision chrome steel balls enable efficient handling of significant radial loads while accommodating moderate axial loads in both directions.
- Precision Engineering: Built to ABEC1 tolerance class with tight dimensional control (bore/OD tolerance: -0.0003" to 0"), ensuring smooth operation, reduced vibration, and enhanced system accuracy.
- Shielded Protection: The double-sided 300 series stainless steel shields retain lubricant and protect against dust and debris, extending service life in contaminated environments.
- Stainless Steel Cage: The corrosion-resistant cage maintains ball alignment and stability, contributing to reliable performance at the limiting speed of 43,000 rpm.
- Standard Internal Clearance (MC3): Provides optimal fit and performance for most general applications, minimizing noise and heat generation.
R3zz Bearing Typical Application Areas
- Small Precision Motors and stepper motors
- Medical Devices and dental handpieces
- Office Automation Equipment (printers, scanners, copiers)
- Instrumentation and measurement devices
- Small Power Tools and hobbyist equipment
- Textile Machinery components
