MR52zz
MR Series Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
MR52zz
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.2 g
Tolerance class
ABEC1
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
2 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
5 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
6
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
32 lbf
Radial static load rating
9 lbf
Limiting speed
85 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:
$ 1.91
/ each
In Stock
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MR52zz Bearing Product Overview & Core Advantages
The MR52zz is a miniature metric ball bearing engineered for applications demanding compact size and reliable performance. As a single row radial ball bearing, it is designed to primarily accommodate radial loads efficiently. Its construction offers a high degree of rotational accuracy, making it suitable for high-speed operation in precision instruments. The inclusion of shielded seals (zz) provides effective contamination protection, enhancing bearing life and reliability in various operational environments.
MR52zz Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| MR52 | Indicates the bearing series and size designation (2mm bore, 5mm OD, 2.5mm width). |
| zz | Signifies that the bearing is equipped with shields on both sides. This provides protection against solid contaminants while offering low friction, contributing to the high limiting speed. |
MR52zz Bearing Structural Features & Performance Benefits
- Compact & Lightweight Design: With a bore diameter of just 2mm and a weight of only 0.2g, this bearing is ideal for space-constrained and weight-sensitive applications.
- High-Speed Capability: The combination of a stainless steel cage, precision chrome steel components, and shielded design enables a high limiting speed of 85,000 rpm.
- Radial Load Capacity: Engineered to handle radial dynamic loads effectively, ensuring stable performance in its primary load direction.
- Precision & Quality: Manufactured to ABEC1 tolerance class with a controlled radial internal clearance (MC3), guaranteeing consistent and smooth operation.
- Durable Construction: Components made from chrome steel and 300 series stainless steel shields offer excellent durability and corrosion resistance.
MR52zz Bearing Typical Application Areas
This miniature precision bearing is widely used in:
- Small DC Motors and Stepper Motors
- Precision Instruments and Optical Encoders
- Medical Devices and Dental Handpieces
- Office Automation Equipment (e.g., Printers, Scanners)
- Radio-Controlled Models and Drones
- Small Fans and Pumps
