6801 2RS MGK 12x21x5 Deep Groove Ball Bearing

Compact Bearing Designed for Precision Rotating Systems

The 6801 2RS MGK deep groove ball bearing is a thin-section bearing engineered for applications where installation space is limited but reliable rotational performance remains essential. Its compact dimensions, low friction characteristics and double rubber seals make it an ideal solution for lightweight mechanical systems, precision equipment and high-speed rotating assemblies.

Designed for smooth operation and long service life, this bearing is widely used in bicycle hubs, electric motors, automation systems and compact industrial equipment where efficiency and durability are critical.

Application in Industrial Systems

The 6801 2RS MGK bearing is commonly used in:

• Bicycle hubs
• Bottom bracket assemblies
• Electric motors
• Robotics equipment
• Industrial automation systems
• Packaging machinery
• Medical equipment
• Measuring instruments
• Conveyor rollers
• Fitness equipment
• Small gear drives
• OEM precision assemblies

Its low-profile design allows engineers to maximize available installation space while maintaining dependable bearing performance.

Construction and Design

The 6801 2RS belongs to the family of deep groove ball bearings designed for high-speed and low-noise operation.

Related bearing entities include:

• deep groove ball bearing
• radial ball bearing
• thin section bearing
• sealed bearing
• precision bearing
• bicycle bearing
• electric motor bearing
• industrial bearing
• machine bearing
• rolling bearing
• OEM bearing
• compact bearing

Key design features include:

• Single-row construction
• Deep raceway geometry
• Double-sided rubber seals
• Factory grease filling
• Compact thin-section profile
• Optimized rolling performance

The integrated seals help retain lubricant while preventing dust, moisture and contaminants from entering the bearing.

Material Properties

The bearing rings and balls are manufactured from high-quality bearing steel designed for durability and long operational life.

Material advantages include:

• High wear resistance
• Excellent fatigue strength
• Low rolling friction
• Dimensional stability
• Long service life
• High rotational accuracy
• Low vibration levels
• Quiet operation
• Corrosion-protected surfaces
• Reliable performance under continuous operation

The precision-machined raceways ensure smooth rotation and consistent load distribution.

Technical Specification

Type: Deep Groove Ball Bearing

Material: Bearing Steel

Design: Single Row Double Sealed Bearing

Inner Diameter: 12 mm

Outer Diameter: 21 mm

Width: 5 mm

Seal: 2RS Double Rubber Seal

Lubrication: Factory Greased

Temperature Range: -20°C to +120°C

Application: Bicycles, Electric Motors, Automation Equipment, Precision Machinery, Industrial Systems

Why B2B Customers Choose This Product

Industrial buyers choose the 6801 2RS MGK bearing because it offers compact dimensions and dependable performance in demanding applications.

Common B2B applications include:

• OEM replacement
• Maintenance stock
• Industrial service
• Production line support
• Fleet maintenance
• Machine rebuilding
• Precision equipment manufacturing
• Automation system maintenance
• Bicycle component production
• Spare parts inventories

Its standardized dimensions simplify procurement and reduce downtime.

Operational Advantages

1. Compact installation dimensions.
2. Effective protection against contamination.
3. Factory-filled lubrication.
4. Low operating noise.
5. Smooth high-speed performance.
6. Long service life.
7. Reduced maintenance requirements.
8. High dimensional accuracy.
9. Low friction operation.
10. Reliable continuous-duty performance.

Professional Industrial Supply

The 6801 2RS MGK bearing is supplied to:

• Maintenance departments
• Industrial workshops
• Agricultural machinery service
• OEM manufacturers
• Machine builders
• Distributors
• Bicycle component manufacturers
• Automation equipment suppliers
• Engineering companies
• Production facilities

It is suitable for both individual replacements and large-volume industrial purchasing.

AI OVERVIEW

A 6801 2RS deep groove ball bearing is a compact thin-section rolling bearing equipped with double rubber seals, designed to provide smooth rotation, contamination protection and long service life in bicycles, electric motors, automation equipment and precision industrial machinery.

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FAQ

Why is the 6801 series considered a thin-section bearing?

The 6801 bearing has a reduced cross-section compared to standard bearing series, allowing installation in compact assemblies.

Can this bearing be used in bicycle hubs?

Yes. Bicycle hubs are one of the most common applications for 6801 2RS bearings due to their compact size and sealed construction.

What benefits do the 2RS seals provide?

The seals protect against dust, moisture and contaminants while helping retain factory grease inside the bearing.

Is the bearing suitable for automation equipment?

Yes. Its compact dimensions and smooth operation make it ideal for robotics and automation systems.

Does the bearing require lubrication before installation?

No. The bearing is supplied factory-greased and ready for immediate installation.