For precision instrument manufacturers, medical equipment OEMs, micro motor suppliers, and automation equipment designers, bearing performance directly affects reliability, efficiency, and service life.

The EKB MR52ZZ miniature deep groove ball bearing is engineered with precise dimensions of 2 mm x 5 mm x 2.5 mm and is designed for compact, high-speed applications requiring smooth rotation, low vibration, and long-term durability.

Equipped with dual metal shields (ZZ), this bearing provides effective protection against dust and contamination while retaining lubrication for stable operation in demanding environments. Available in premium chrome steel and stainless steel configurations, the MR52ZZ is suitable for both OEM production and aftermarket replacement requirements.

Why Buyers Choose EKB MR52ZZ Bearings

■ Precision 2x5x2.5mm dimensions

■ Smooth rotational performance

■ Low startup torque

■ Reduced vibration and noise

■ Double metal shield protection

■ Consistent production quality

■ OEM and private label support

■ Multiple material options available

Common Bearing Failures Buyers Should Avoid

Many buyers focus only on dimensions and pricing when sourcing miniature bearings. However, premature bearing failure is often caused by:

■ Poor raceway finishing

■ Low-grade bearing steel

■ Inconsistent ball grading

■ Improper heat treatment

■ Incorrect lubrication

■ Insufficient quality control procedures

These issues can lead to excessive noise, increased friction, premature wear, and reduced service life. EKB minimizes these risks through strict manufacturing standards and comprehensive quality inspections throughout production.

MR52ZZ Bearing Specifications

Typical Applications

■ Micro Motors and RC Components

The MR52ZZ bearing is commonly used in miniature motors, RC accessories, and compact drive systems where low friction and smooth operation are essential.

■ Medical Devices and Precision Instruments

Suitable for optical equipment, laboratory instruments, surgical devices, and miniature assemblies requiring high rotational accuracy.

■ Robotics and Automation Equipment

Widely used in compact robotic joints, miniature actuators, and precision automation systems.

■ General Precision Equipment

Applicable to measuring devices, electronic equipment, and various compact rotating assemblies.

OEM Replacement and Bearing Cross Reference

(Note: Cross-reference information is provided for identification purposes only.)

Material Options

■ Chrome Steel Version

Recommended for: Industrial equipment, micro motors, consumer electronics, and general machinery.

Advantages: Cost-effective, excellent durability, and stable performance.

■ Stainless Steel Version

Recommended for: Medical equipment, outdoor devices, humid environments, and corrosion-sensitive applications.

Advantages: Excellent corrosion resistance, reduced rust risk, and longer service life in challenging environments.

Miniature and Special Bearing Support

As a specialist supplier of miniature and special bearings, EKB helps customers solve difficult sourcing challenges. Our services include:

■ Hard-to-find bearing dimensions

■ Obsolete bearing replacement solutions

■ Cross-reference matching assistance

■ Custom lubrication options

■ Special material configurations

■ OEM customization support

Need Help Identifying Your Bearing?

Unable to identify your bearing model? Simply send us:

■ Bearing markings

■ Product photos

■ Dimensions

■ Application details

Our engineering team can assist with bearing identification, cross-reference matching, and replacement recommendations.

[ Upload Your Photos / Send Your Inquiry Today ]

Procurement Guide

Before purchasing MR52ZZ miniature bearings, buyers should evaluate:

1. Material quality

2. Raceway finishing quality

3. Ball grade consistency

4.Lubrication suitability

5. Operating speed requirements

6. Environmental conditions

7. Batch traceability and quality documentation

Evaluating these factors helps improve equipment reliability and reduce maintenance costs.

Why Choose EKB

■ Factory Direct Supply: Competitive pricing with stable production capability.

■ Strict Quality Control: Comprehensive inspection procedures throughout manufacturing.

■ Engineering Support: Bearing selection assistance and technical documentation support.

■ OEM and Private Label Solutions: Customized packaging, labeling, and branding services.

■ Reliable Global Delivery: Stable lead times and professional international logistics support.

Frequently Asked Questions

Q1. What are the dimensions of the MR52ZZ bearing?

A1. The MR52ZZ bearing has an inner diameter of 2 mm, an outer diameter of 5 mm, and a width of 2.5 mm.

Q2. What does the ZZ suffix mean?

A2. ZZ indicates that the bearing is equipped with double metal shields designed to prevent dust contamination while retaining lubrication.

Q3. Can EKB MR52ZZ replace NSK MR52ZZ or NMB L-520ZZW52?

A3. Yes. The EKB MR52ZZ bearing is manufactured to equivalent boundary dimensions and can be used as a direct replacement for compatible applications.

Q4. Do you offer stainless steel versions?

A4. Yes. Stainless steel versions are available for applications requiring enhanced corrosion resistance.

Request a Quote

Looking for a reliable MR52ZZ miniature bearing supplier? Contact EKB today for:

■ Free Sample Evaluation

■ OEM Customization

■ Technical Drawings

■ Engineering Consultation

■ Competitive Factory Pricing

Inquiry Form Now and receive a professional quotation within 24 hours.