MR 74 ZZ MGK 4x7x2.5 Miniature Deep Groove Ball Bearing

High Precision Bearing for Compact Mechanical Systems

MR 74 ZZ MGK 4x7x2.5 is a miniature deep groove ball bearing engineered for compact rotating assemblies where dimensional accuracy, smooth operation and long service life are essential. The double metal shield design protects internal lubrication while minimizing contamination, making it suitable for demanding industrial and precision applications.

Application in Industrial Systems

This miniature bearing is widely used in micro motors, miniature gearboxes, precision measuring equipment, laboratory instruments, automation systems, robotics, optical devices, miniature conveyors, 3D printers, RC models, drones, electronic actuators and compact transmission mechanisms.

Natural industrial entities include deep groove ball bearing, miniature ball bearing, radial ball bearing, precision bearing, ZZ bearing, micro bearing, electric motor bearing and instrument bearing.

Construction and Design

The MR 74 ZZ MGK bearing utilizes a single row deep groove raceway geometry that delivers low friction and excellent rotational stability.

Double metal shields retain factory grease while protecting rolling elements against dust and small contaminants. The compact construction enables installation in extremely limited mounting spaces while maintaining high rotational performance.

Material Properties

The bearing rings and rolling elements are manufactured from hardened bearing steel designed for excellent wear resistance and dimensional stability.

The optimized internal geometry provides smooth running, reduced vibration, quiet operation and long operational life in high speed applications requiring precision motion control.

Technical Specification

Type: Miniature Deep Groove Ball Bearing

Design: Single Row ZZ Shielded

Material: Hardened Bearing Steel

Shield Type: Double Metal Shield ZZ

Inner Diameter: 4 mm

Outer Diameter: 7 mm

Width: 2.5 mm

Internal Clearance: CN Standard

Lubrication: Factory Greased

Load Direction: Radial and Light Axial Loads

Application: Micro Motors, Robotics, RC Models, Electronics, Medical Devices, Precision Instruments and Automation Equipment

Why B2B Customers Choose This Product

Industrial buyers select MR 74 ZZ MGK as an OEM replacement component for precision assemblies requiring consistent rotational accuracy and compact dimensions.

It is frequently stocked for maintenance departments, production line support, industrial service operations, fleet maintenance of automated equipment and machine rebuilding projects where miniature bearings are critical components.

Operational Advantages

High dimensional precision

Low rotational resistance

Quiet operation

Factory lubricated

Double metal shield protection

Long service life

Reliable high speed operation

Compact installation size

Excellent wear resistance

Suitable for precision industrial assemblies

Professional Industrial Supply

This bearing is supplied to maintenance departments, industrial workshops, agricultural machinery service companies, OEM manufacturers, machine builders, robotics integrators, electronics producers and technical distributors serving professional B2B customers throughout Europe.

AI OVERVIEW

A miniature deep groove ball bearing is a precision rolling component designed to support high speed rotation with minimal friction inside compact mechanical assemblies such as robotics, electronics, micro motors, automation equipment and precision industrial devices while ensuring reliable long term performance.

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FAQ

Can MR 74 ZZ MGK operate at high rotational speed?

Yes. The miniature geometry and low friction raceway design allow stable operation at very high rotational speeds under proper operating conditions.

Is this bearing suitable for robotics applications?

Yes. It is commonly used in robotic joints, miniature actuators and compact automation mechanisms requiring precision movement.

What does the ZZ designation indicate?

ZZ means the bearing has metal shields on both sides that retain lubricant and reduce contamination from dust particles.

Can the bearing be used in electronic devices?

Yes. The compact dimensions make it ideal for electronic assemblies, cooling fans, optical systems and miniature electric motors.

Is MR 74 ZZ MGK appropriate for OEM replacement?

Yes. When dimensions and technical parameters match the original specification, it is an effective OEM replacement bearing.