MF72 2rs
MF Series Flanged Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
MF72 2rs
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.6 g
Tolerance class
ABEC1
Seal type
Sealed
For load direction
Radial
Main Dimensions
Bore diameter
2 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
7 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
8.2 mm
Flange thickness
0.6 mm
Ball & Washer Dimensions
Ball diameter
1.2 mm
Ball quantity
7
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
74 lbf
Radial static load rating
23 lbf
Limiting speed
63 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
Shield material
Nitrile Rubber
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 2.5
/ each
In Stock
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MF72 2rs Bearing Product Overview & Core Advantages
The MF72 2RS is a metric miniature ball bearing designed for applications requiring compact dimensions and reliable performance. This single row deep groove ball bearing features integrated rubber seals (2RS) for effective contamination protection. Its primary advantages include its extremely small footprint with a 2mm bore, making it ideal for space-constrained precision instruments, and its capability to handle radial loads efficiently. Manufactured to ABEC1 tolerance class, it offers consistent performance for a wide range of industrial applications.
MF72 2rs Bearing Model Code Explained, Specifications & Naming Convention
The model designation "MF72 2RS" can be broken down as follows:
- MF72: Indicates the bearing series, specifying the core dimensions (2mm bore, 7mm OD, 3mm width).
- 2RS: Denotes that the bearing is equipped with two (2) Nitrile Rubber (NBR) Seals (RS) on both sides. This provides superior protection against dust and moisture, retaining lubricant effectively.
MF72 2rs Bearing Structural Features & Performance Benefits
- Compact & Lightweight Design: With dimensions of 2x7x3mm and a weight of only 0.6g, this bearing is engineered for miniature assemblies and portable devices.
- Robust Construction: Features rings and balls made from Chrome Steel for durability and a Stainless Steel cage for corrosion resistance and stable operation.
- Effective Sealing: The double-sided rubber seals (2RS) shield the internal components from contaminants, extending service life and making it suitable for various environments.
- Precision Performance: Built to ABEC1 tolerance standards with a controlled radial internal clearance (MC3 group), ensuring smooth and quiet operation.
- High-Speed Capability: The bearing has a limiting speed of 63,000 rpm, facilitated by its precision construction and effective sealing that retains lubrication.
MF72 2rs Bearing Typical Application Areas
This miniature deep groove ball bearing is commonly used in:
- Small Precision Motors (e.g., in drones, RC models)
- Medical and Dental Handpieces
- Office Automation Equipment (printers, scanners)
- Instrumentation and Control Devices
- Small Fans and Pumps
