MR82x
MR Series Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
MR82x
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.52 g
Tolerance class
ABEC1
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
2.5 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
8 mm
Outside diameter tolerance
-0.008mm to 0
Width
2.5 mm
Width tolerance
-0.12mm to 0
Inner Ring Dimensions
Inner ring type
Standard
Ball & Washer Dimensions
Ball diameter
1.588 mm
Ball quantity
6
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
107 lbf
Radial static load rating
32 lbf
Limiting speed
60 X 1000 rpm
Lubrication
Required
Radial internal clearance
MC3
Radial internal clearance
0.002mm to 0.013mm
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Stainless Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 1.72
/ each
In Stock
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MR82x Bearing Product Overview & Core Advantages
The MR82x series represents a high-precision miniature ball bearing engineered for demanding applications requiring compact dimensions and reliable performance. This single row deep groove ball bearing is designed to primarily handle radial loads while also accommodating moderate axial loads in both directions. Manufactured to ABEC1 precision standards with a stainless steel cage, it delivers smooth operation and extended service life in high-speed environments, making it an ideal component for compact mechanisms where space and reliability are critical.
MR82x Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| MR82x | Series designation for miniature metric bearings |
| Open | No seals or shields; requires external lubrication and protection from contaminants |
| MC3 | Radial internal clearance group (0.002mm to 0.013mm) |
MR82x Bearing Structural Features & Performance Benefits
- High-Speed Capability: The optimized stainless steel cage and precision-ground chrome steel components enable stable operation at limiting speeds up to 60,000 rpm, making it suitable for high-speed miniature applications.
- Radial Load Capacity: With a dynamic load rating of 107 lbf and static load rating of 32 lbf, this bearing provides reliable performance in compact spaces while handling significant radial forces.
- Precision Engineering: Manufactured to ABEC1 tolerance class with tight dimensional control (bore diameter: 2.5mm, outside diameter: 8mm, width: 2.5mm), ensuring consistent performance and easy integration into precision assemblies.
- Material Excellence: Constructed from chrome steel rings and chrome steel balls for optimal hardness and wear resistance, combined with a stainless steel cage for corrosion resistance and dimensional stability.
MR82x Bearing Typical Application Areas
- Precision Instruments: Optical encoders, medical devices, and laboratory equipment requiring miniature high-speed bearings
- Small Motors & Drives: Micro motors, DC brushless motors, and miniature spindle applications
- Office Automation: Printers, scanners, and copiers where compact ball bearings ensure smooth paper handling
- Robotics & Automation: Small robotic joints, miniature actuators, and precision positioning systems
- Electronic Devices: Cooling fans, small gearboxes, and precision mechanisms in consumer electronics
