MR128 2rs
MR Series Miniature Bearings
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Part No.
Part No.
MR128 2rs
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.99 g
Tolerance class
ABEC1
Seal type
Sealed
For load direction
Radial
Main Dimensions
Bore diameter
8 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
12 mm
Outside diameter tolerance
-0.008mm to 0
Width
3.5 mm
Width tolerance
-0.12mm to 0
Inner Ring Dimensions
Inner ring type
Standard
Ball & Washer Dimensions
Ball diameter
1.2 mm
Ball quantity
12
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
104 lbf
Radial static load rating
49 lbf
Limiting speed
40 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
Nitrile Rubber
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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MR128 2rs Bearing Product Overview & Core Advantages
The MR128 2RS is a metric single row deep groove ball bearing designed for compact applications requiring reliable performance. This sealed bearing excels in handling radial loads primarily, offering a robust solution for various mechanical systems. Its compact dimensions (8mm bore, 12mm OD, 3.5mm width) make it ideal for space-constrained designs. Manufactured with chrome steel rings and balls, it provides excellent durability and consistent operation, making it a dependable choice for applications demanding precision and long service life.
MR128 2rs Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| MR128 | Basic bearing designation indicating metric series, 8mm bore diameter, 12mm outside diameter, and 3.5mm width. |
| 2RS | Signifies double rubber seals on both sides, providing effective protection against contamination and retaining lubricant. |
MR128 2rs Bearing Structural Features & Performance Benefits
- Robust Sealing & Contamination Resistance: The double rubber seals (2RS) effectively shield the internal components from dust, moisture, and other contaminants, significantly enhancing bearing life and reliability in harsh environments.
- Optimized Internal Geometry: The deep groove raceway and precision-ground components enable smooth operation and efficient handling of radial loads.
- High-Quality Material Construction: Rings and balls made from chrome steel provide high hardness and wear resistance. The stainless steel cage ensures stability and guides the balls accurately, contributing to smooth running and reduced noise.
- Precision & Consistency: Manufactured to ABEC1 tolerance class with a controlled radial internal clearance (MC3 group), ensuring predictable performance and interchangeability.
- Broad Operating Range: Suitable for a temperature range from -30°C to 110°C, accommodating various operational conditions.
MR128 2rs Bearing Typical Application Areas
- Small Electric Motors (e.g., in power tools, household appliances)
- Precision Instruments and gauges
- Office Automation Equipment (printers, scanners, copiers)
- Medical Devices and laboratory equipment
- Radio-Controlled Models and hobbyist machinery
- Low-Power Gearboxes and drives
