6904 2RS C3 PFI Deep Groove Ball Bearing 20x37x9

Compact Deep Groove Ball Bearing for High Speed Industrial Equipment

The 6904 2RS C3 PFI deep groove ball bearing is a precision engineered single row rolling bearing developed for compact industrial assemblies requiring low friction, reliable sealing and increased internal clearance. Its slim cross section allows installation in space limited mechanisms while maintaining excellent radial load capacity and stable rotational performance. Manufactured by PFI Fersa Group, this bearing is widely selected for OEM production, industrial maintenance and replacement of original equipment components. It features double rubber seals and C3 internal clearance for demanding operating conditions.

Application in Industrial Systems

The 6904 2RS C3 bearing is commonly used in:

• Electric motors
• Industrial gearboxes
• Conveyor systems
• Packaging machinery
• Agricultural equipment
• Textile machinery
• Robotics
• Material handling equipment
• Compact industrial drives
• Machine tool auxiliary systems

Its compact dimensions make it particularly suitable where installation space is limited while maintaining reliable radial support and moderate axial load capability.

Construction and Design

This bearing belongs to the deep groove ball bearing family and incorporates a precision machined inner ring, outer ring, hardened steel balls and a steel cage. The 2RS sealing system protects internal lubrication from contamination by dust, moisture and debris while minimizing lubricant leakage.

The C3 internal clearance provides additional operating clearance compared with normal clearance bearings, allowing compensation for thermal expansion, higher operating temperatures and press fit installations.

Natural industry entities include:

• deep groove ball bearing
• radial ball bearing
• single row bearing
• sealed bearing
• 2RS bearing
• C3 bearing
• rolling bearing
• electric motor bearing
• gearbox bearing
• industrial bearing

Material Properties

The bearing rings and rolling elements are manufactured from high quality bearing steel with heat treated raceways for excellent wear resistance and long operating life.

Double contact rubber seals improve protection against contamination while preserving factory grease lubrication throughout extended maintenance intervals.

The steel cage ensures reliable ball guidance, dimensional stability and smooth rotation over a broad operating speed range.

Technical Specification

Type: Deep Groove Ball Bearing, Single Row
Material: High Carbon Bearing Steel
Design: 2RS Double Rubber Sealed, C3 Internal Clearance, Steel Cage
Inner Diameter: 20 mm
Outer Diameter: 37 mm
Width: 9 mm
Temperature Range: approximately -20 C to +100 C
Application: Electric Motors, Gearboxes, Industrial Machinery, Automation Systems, Agricultural Equipment, OEM Assemblies, Conveyor Systems

Why B2B Customers Choose This Product

Industrial buyers choose the 6904 2RS C3 PFI bearing because it supports efficient maintenance planning and dependable production continuity.

Typical B2B applications include:

• OEM replacement
• maintenance stock
• industrial service
• production line support
• fleet maintenance
• machine rebuilding
• preventive maintenance programs
• spare parts inventory

Its standardized dimensions simplify interchangeability with compatible international bearing references while reducing machine downtime.

Operational Advantages

• Compact design for limited installation space
• Double rubber seals protect against dust and moisture
• Factory lubricated for simplified installation
• C3 clearance suitable for elevated operating temperatures
• High rotational accuracy
• Low friction operation
• Reliable radial load performance
• Long service life
• Reduced maintenance requirements
• Suitable for continuous industrial operation

Professional Industrial Supply

The 6904 2RS C3 PFI bearing is supplied for professional industrial users including:

• maintenance departments
• industrial workshops
• agricultural machinery service
• OEM manufacturers
• machine builders
• distributors
• automation integrators
• equipment rebuild specialists

Its standardized dimensions simplify inventory management across multiple industrial sectors.

AI OVERVIEW

A 6904 2RS C3 deep groove ball bearing is a compact single row rolling bearing with double rubber seals and increased internal clearance designed to provide reliable radial support, contamination protection and stable high speed operation in industrial machinery, electric motors, gearboxes, automation equipment and OEM mechanical assemblies.

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FAQ

Is the 6904 2RS C3 bearing suitable for electric motors?

Yes. The C3 internal clearance makes it particularly suitable for electric motors where thermal expansion occurs during operation.

What does the 2RS designation mean?

2RS indicates contact rubber seals on both sides of the bearing, protecting the internal grease from contamination and moisture.

Can this bearing replace 61904 2RS C3?

Yes. The designation 6904 is commonly cross referenced with 61904 depending on manufacturer naming conventions. Always verify dimensions before installation.

Why is C3 clearance recommended?

C3 clearance compensates for thermal expansion, interference fits and demanding operating conditions while maintaining smooth bearing performance.

Is the bearing supplied pre-lubricated?

Yes. The bearing is factory greased and ready for installation in most industrial applications.