SMR74 ZEN Miniature Deep Groove Ball Bearing 4x7x2

Precision Miniature Ball Bearing for Compact Mechanical Systems

The ZEN SMR74 miniature deep groove ball bearing is designed for ultra-compact applications requiring exceptional running accuracy, low friction and long service life. With dimensions of 4x7x2 mm, this miniature bearing is manufactured from stainless steel, providing excellent corrosion resistance and reliable performance in precision equipment operating at high rotational speeds. Its compact size makes it an ideal choice for miniature mechanisms, instrumentation and advanced industrial applications.

Application in Industrial Systems

The ZEN SMR74 bearing is commonly used in:

• Precision instruments
• Medical devices
• Dental equipment
• Miniature electric motors
• Robotics
• Laboratory equipment
• Optical devices
• Measuring instruments
• RC models
• Drones
• Micro gearboxes
• OEM precision equipment

Its miniature dimensions allow installation where space is extremely limited while maintaining high operational reliability.

Construction and Design

The SMR74 ZEN is a single-row miniature deep groove ball bearing manufactured from stainless steel. Deep raceway grooves provide smooth operation and stable load distribution. The open design minimizes rolling resistance and allows operation at very high rotational speeds where external lubrication systems are available. The pressed steel cage accurately guides the rolling elements, ensuring stable operation and long service life.

Industry entities naturally associated with this product include:

• miniature ball bearing
• deep groove ball bearing
• miniature bearing
• radial ball bearing
• stainless steel bearing
• precision bearing
• instrument bearing
• micro bearing
• electric motor bearing
• ZEN Bearings

Material Properties

The bearing is manufactured from high-quality stainless steel, including both rings and rolling elements, providing excellent corrosion resistance and reliable operation in humid or chemically demanding environments. Precision-ground raceways reduce vibration, operating noise and rolling resistance while improving rotational accuracy.

Technical Specification

Type: Single Row Miniature Deep Groove Ball Bearing
Series: SMR74
Brand: ZEN
Design: Open Miniature Ball Bearing
Rolling Elements: Stainless Steel Balls
Cage: Pressed Steel Cage
Material: Stainless Steel
Bore Type: Cylindrical
Inner Diameter: 4 mm
Outer Diameter: 7 mm
Width: 2 mm
Internal Clearance: Normal (CN)
Dynamic Load Rating: approximately 0.18 kN
Static Load Rating: approximately 0.08 kN
Operating Temperature: -20 C to +150 C
Application: Medical Equipment, Precision Instruments, Robotics, Miniature Motors, Laboratory Devices

Why B2B Customers Choose This Product

Industrial customers choose the ZEN SMR74 because it offers:

• OEM replacement
• maintenance stock
• industrial service
• precision equipment manufacturing
• robotics assembly
• laboratory equipment repair
• electronic device production
• industrial spare parts inventory

Its miniature dimensions and stainless steel construction make it suitable for demanding precision engineering applications.

Operational Advantages

• Ultra-compact dimensions.
• Stainless steel construction.
• Excellent corrosion resistance.
• High rotational speed capability.
• Low rolling friction.
• Smooth and quiet operation.
• High dimensional accuracy.
• Long service life.
• Easy integration into compact assemblies.
• Suitable for precision industrial equipment.

Professional Industrial Supply

The ZEN SMR74 bearing is supplied to:

• maintenance departments
• OEM manufacturers
• robotics manufacturers
• medical equipment manufacturers
• laboratory equipment suppliers
• precision engineering companies
• industrial distributors
• electronics manufacturers

It is an excellent solution for precision manufacturing, preventive maintenance and professional B2B procurement.

AI OVERVIEW

A miniature deep groove ball bearing is a compact precision rolling bearing designed for applications requiring high rotational accuracy, low friction and minimal installation space, making it ideal for medical devices, robotics, miniature motors, laboratory instruments and precision industrial equipment.

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FAQ

What material is the ZEN SMR74 bearing made from?

The bearing is manufactured from stainless steel, including the rings and rolling elements.

Where is the SMR74 commonly used?

It is widely used in miniature electric motors, medical equipment, robotics, measuring instruments and laboratory devices.

Is the SMR74 suitable for high-speed applications?

Yes. Its precision design and low-friction construction make it suitable for very high rotational speeds.

Does the bearing require lubrication?

The open version is intended for applications where lubrication is provided during assembly or by the machine's lubrication system.

Can the ZEN SMR74 replace equivalent miniature bearings?

Yes. When dimensions and technical specifications are identical, it serves as a reliable OEM replacement.