MR126zz
MR Series Miniature Bearings
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Part No.
Part No.
MR126zz
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
1.66 g
Tolerance class
ABEC1
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
6 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
12 mm
Outside diameter tolerance
-0.008mm to 0
Width
4 mm
Width tolerance
-0.12mm to 0
Inner Ring Dimensions
Inner ring type
Standard
Ball & Washer Dimensions
Ball diameter
1.588 mm
Ball quantity
8
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
137 lbf
Radial static load rating
53 lbf
Limiting speed
43 X 1000 rpm
Lubrication
Required
Radial internal clearance
0.002mm to 0.013mm
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:
$ 1.13
/ each
In Stock
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MR126zz Bearing Product Overview & Core Advantages
The MR126zz is a metric miniature ball bearing designed for high-speed radial load applications requiring compact dimensions and reliable performance. As a single row deep groove ball bearing with shielded construction, it offers excellent operational efficiency in confined spaces. Its chrome steel rings and balls, combined with a stainless steel cage, ensure durability and consistent operation. This bearing is precision-manufactured to ABEC1 tolerance class, making it suitable for applications demanding smooth rotation and high limiting speeds up to 43,000 rpm.
MR126zz Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| MR126 | Basic bearing designation indicating metric series, 6mm bore, 12mm OD, 4mm width |
| zz | Double-sided shielded construction providing effective contamination protection |
MR126zz Bearing Structural Features & Performance Benefits
- Optimized Radial Load Capacity: The deep groove raceway and 8-ball configuration with 1.588mm diameter balls provide excellent radial dynamic load rating of 137 lbf and radial static load rating of 53 lbf.
- High-Speed Performance: The stainless steel cage ensures stable ball guidance at limiting speeds up to 43,000 rpm, while the precision ABEC1 tolerance minimizes vibration.
- Contamination Protection: Double 300 series stainless steel shields effectively retain lubrication and exclude contaminants, extending service life.
- Precision Engineering: Tight dimensional tolerances (bore: -0.008mm to 0, OD: -0.008mm to 0) and controlled radial internal clearance (MC3: 0.002mm to 0.013mm) ensure consistent performance.
- Material Excellence: Chrome steel rings and balls provide high hardness and wear resistance, suitable for operating temperatures from -30° to 110°C.
MR126zz Bearing Typical Application Areas
- Small precision motors and miniature DC motors
- Office automation equipment including printers, scanners, and copiers
- Medical devices and dental handpieces
- Robotics and small automation systems
- Computer cooling fans and small power tools
- Instrumentation and measurement devices
- Consumer electronics requiring quiet operation
