MF137
MF Series Flanged Miniature Bearings
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Part No.
Part No.
MF137
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
1.64 g
Tolerance class
ABEC1
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
7 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
13 mm
Outside diameter tolerance
-0.008mm to 0
Width
3 mm
Width tolerance
-0.12mm to 0
Inner Ring Dimensions
Inner ring type
Standard
Outer Ring Dimensions
Flange outer diameter
14.2 mm
Flange thickness
0.6 mm
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
50 lbf
Limiting speed
40 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
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 1.32
/ each
In Stock
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MF137 Bearing Product Overview & Core Advantages
The MF137 is a metric miniature ball bearing engineered for precision applications requiring reliable performance in compact spaces. As a single row deep groove ball bearing with an open seal type, it is optimized for radial load applications. Its design offers a superior balance of high limiting speed capabilities and smooth operation, making it an ideal choice for high-precision, high-reliability electromechanical systems where space and weight are critical constraints.
MF137 Designation Code Breakdown
| Code Element | Technical Significance |
|---|---|
| M | Metric series bearing |
| F | Flanged outer ring design |
| 137 | Standard bearing size designation (7mm bore, 13mm OD) |
| Open Seal | No integral seals, allowing for high-speed operation and custom lubrication solutions |
MF137 Bearing Structural Features & Performance Benefits
- Flanged Design: The integrated flange (14.2mm outer diameter) provides secure axial location and simplifies housing design, enhancing mounting precision and stability.
- High-Speed Capability: With a limiting speed of 40,000 rpm and a stainless steel cage, the bearing maintains stability and low friction at high rotational velocities.
- Precision Tolerance: Manufactured to ABEC1 tolerance class with controlled radial internal clearance (MC3 group), ensuring consistent performance and smooth operation.
- Robust Construction: Components made from chrome steel (rings and balls) provide excellent wear resistance and durability under radial dynamic loads up to 104 lbf.
- Compact & Lightweight: With dimensions of 7x13x3mm and a weight of just 1.64 grams, it is ideal for space-constrained applications without compromising load capacity.
MF137 Bearing Typical Application Areas
- Small Precision Motors: Stepper motors, DC micromotors, and spindle motors in consumer electronics and medical devices
- Office Automation Equipment: Laser printer rollers, scanner mechanisms, and copier drums
- Instrumentation & Measurement Devices: Encoders, gauges, and precision positioning systems
- Robotics & Automation: Small robotic joints, actuator mechanisms, and precision guidance systems
- Consumer Electronics: Computer cooling fans, drone motors, and small appliance mechanisms
