Micro Deep Groove Ball Bearings Product Introduction

Stainless Steel Cylindrical Roller Bearing

Product Overview

Micro deep groove ball bearings are compact rolling bearings designed for equipment with limited installation space. Our miniature bearing range covers bore diameters from 2 mm to 10 mm and includes different bearing sizes, sealing configurations, materials, precision grades, internal clearances, and lubrication options.

Available miniature series include 623, 624, and 625, with open, ZZ metal-shielded, and 2RS rubber-sealed configurations. Chrome bearing steel, stainless steel, and other special materials can be supplied according to application requirements.

Typical applications include:

Consumer electronics
Miniature motors
Cooling fans
Industrial automation equipment
Medical devices
Precision instruments
Compact rotating mechanisms

For replacement applications, the original bearing model, dimensions, or equipment drawing should be provided whenever available.

Representative Models

The following models represent commonly available miniature deep groove ball bearing configurations:

Model	Bore (d)	Outside Diameter (D)	Width (B)	Seal Type
623ZZ	3 mm	10 mm	4 mm	ZZ Metal Shield
624ZZ	4 mm	13 mm	5 mm	ZZ Metal Shield
624-2RS	4 mm	13 mm	5 mm	2RS Rubber Seal
625ZZ	5 mm	16 mm	5 mm	ZZ Metal Shield
625-2RS	5 mm	16 mm	5 mm	2RS Rubber Seal

Additional models and configurations are available according to bearing series and application requirements.

Dynamic load rating (Cr), static load rating (Cor), internal clearance, precision grade, limiting speed, material, and lubrication are confirmed according to the specific bearing model and production specification.

General Specifications

Parameter	Specification
Bearing Type	Micro Deep Groove Ball Bearing
Bore Diameter (d)	2–10 mm
Sealing Options	Open / ZZ / 2RS
Material	Chrome Bearing Steel / Stainless Steel / Special Materials
Lubrication	Grease / Oil / Customized
Precision Grade	Model and application specific
Internal Clearance	Model and application specific
Maximum Speed	Up to 150,000 r/min for selected models
Customization	Dimensions / Material / Seal / Clearance / Lubricant / Packaging

The exact technical specification should be confirmed according to the selected bearing model.

Operating Parameters

Micro deep groove ball bearings are primarily used for radial loads and can also accommodate axial loads in both directions within the limits of the specific bearing design.

For procurement and technical confirmation, the main operating parameters include:

Load,Rotational speed,Operating temperature,Internal clearance,Precision grade,Sealing configuration,Lubrication,Installation conditions

High-Speed Performance

Selected micro deep groove ball bearing models can achieve speeds of up to 150,000 r/min.

This value applies only to selected models and configurations and is not the maximum speed of the complete product range. The applicable speed should be confirmed according to the specific bearing model, load, sealing configuration, lubricant, temperature, and operating conditions.

Our address

180 meters east of Fengquan Village Committee, Yandian Town, Linqing City, Shandong Province, South of the road

Phone Number

+8615266869696

E-mail

578442557@qq.com

Rolling Mill Bearings

Material, Lubrication and Sealing

Chrome Bearing Steel

Used for general miniature bearing applications requiring hardness and wear resistance.

Material

Stainless Steel

Available for applications exposed to moisture, water vapor, cleaning processes, or corrosive environments.

Special Materials

Other material options can be evaluated according to specific application requirements.

Available lubrication options include:

Grease
Oil
Customized lubrication solutions

Lubrication

Open Type

Suitable for clean applications where external lubrication can be supplied.

ZZ Metal Shielded

Provides basic protection against dust and is suitable for general-purpose rotating equipment.

2RS Rubber Sealed

Provides improved protection against dust and moisture.

The sealing and lubrication configuration should be confirmed together with the required speed, temperature, and operating environment.

Manufacturing and Quality Control

The Art Of Angular Contact: The Balancing Act Of The Radial Thrust Bearing

Micro bearings require precise control of small dimensions and functional performance. Our manufacturing process covers machining, grinding, assembly, cleaning, and inspection, with process control applied throughout production.

Quality control focuses on key characteristics that directly affect bearing performance, including:

Dimensional accuracy,Raceway quality
Rolling element condition,Internal clearance
Running noise
Rotational performance
Batch-to-batch consistency

Each bearing configuration is inspected according to its specified dimensions, material, sealing configuration, lubrication, and performance requirements.

Applications

Micro deep groove ball bearings are used in compact rotating equipment where bearing size, load, speed, precision, noise, or environmental resistance need to be considered.

Application	Typical Requirements
Consumer Electronics	Compact size, low friction, low noise
Miniature Motors	Size, speed, stable rotation
Cooling Fans	Speed, noise, lubrication
Industrial Automation	Load, speed, precision, clearance
Medical & Precision Equipment	Material, precision, cleanliness, noise
Wet or Corrosive Environments	Stainless steel, sealing, corrosion resistance

The final bearing configuration should be confirmed according to the actual equipment requirements.

OEM and Customization

We support customized micro deep groove ball bearing solutions based on customer drawings, samples, and application requirements.

Customization options may include:

Bearing dimensions

Materials

Sealing configurations

Internal clearance

Precision grade

Lubricants

Packaging

For customized projects, customers can provide:x

Existing bearing model

Shaft and housing dimensions

Operating speed

Load

Operating temperature

Working environment

Available installation space

Equipment drawing or bearing sample

These details are used to confirm the required bearing configuration before production.

Ordering Information

For standard replacement or new equipment applications, please provide the following information whenever available:

Bearing Model → d × D × B → Load → Speed → Clearance → Precision Grade → Seal Type → Material → Lubrication

If the complete bearing model is unavailable, customers can provide the existing bearing dimensions, sample, or equipment drawing together with the operating requirements.

For OEM projects, drawings or samples are recommended so that dimensions, materials, sealing, lubrication, and other specifications can be confirmed before production.

What Are The Characteristics And Uses Of Bearing Rollers

Important Note

Outside diameter, width, dynamic load rating, static load rating, limiting speed, internal clearance, and precision grade are model-specific parameters.

The maximum speed of 150,000 r/min applies only to selected micro deep groove ball bearing models and should not be used as a general specification for the complete product range.