MR63zz
MR Series Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
MR63zz
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.28 g
Tolerance class
ABEC1
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
3 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
6 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
0.8 mm
Ball quantity
8
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
40 lbf
Radial static load rating
13 lbf
Limiting speed
71 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
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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MR63zz Bearing Product Overview & Core Advantages
The MR63zz is a metric miniature ball bearing designed for high-performance applications requiring compact dimensions and reliable operation. As a single row deep groove ball bearing with shielded construction, it excels in handling radial loads efficiently. Its precision engineering, confirmed by an ABEC1 tolerance class, ensures smooth rotation and positional accuracy, making it an ideal component for devices where space is limited and performance is critical.
MR63zz Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Advantage |
|---|---|---|
| MR | Miniature Bearing Series Prefix | Indicates a compact, lightweight design for small-scale machinery. |
| 63 | Standard Size Designation (3mm bore, 6mm OD) | Provides standardized bearing dimensions for easy integration. |
| zz | Double-Shielded (Non-Contact Seals on Both Sides) | Offers effective contamination protection while maintaining high-speed capability. |
MR63zz Bearing Structural Features & Performance Benefits
This bearing's performance is derived from its optimized construction:
- High Rigidity & Load Capacity: The single row deep groove raceway and chrome steel rings provide robust support for radial loads, with a dynamic load rating of 40 lbf.
- Precision & Smooth Operation: Manufactured to ABEC1 precision standards with an MC3 radial internal clearance (0.002mm to 0.013mm), ensuring low vibration and noise.
- High-Speed Capability: The lightweight stainless steel cage and optimized geometry enable a limiting speed of 71,000 rpm, suitable for high-speed applications.
- Durability & Corrosion Resistance: Components made from chrome steel and a 300 series stainless steel shield offer excellent wear resistance and protection against mild corrosive environments.
MR63zz Bearing Typical Application Areas
The MR63zz is widely used in precision instruments and compact machinery, including:
- Small DC Motors and Stepper Motors
- Office Automation Equipment (e.g., Printers, Scanners)
- Medical Devices and Dental Handpieces
- Precision Gearboxes and Robotics
- Radio-Controlled Models and Drones
