5309 2RS C3 PFI 45x100x39.7 Double Row Angular Contact Ball Bearing

Heavy-Duty Bearing for Industrial Power Transmission Systems

The 5309 2RS C3 PFI double row angular contact ball bearing is designed for demanding industrial applications requiring high load capacity, reliable operation and long service life. Its double row ball configuration enables the bearing to support significant radial and axial loads simultaneously, while the 2RS contact seals protect internal components from contamination. The C3 internal clearance allows stable operation at elevated temperatures and under higher rotational speeds, making this bearing an excellent choice for industrial power transmission equipment and heavy-duty machinery.

Application in Industrial Systems

The 5309 2RS C3 PFI bearing is commonly used in equipment exposed to continuous operation and heavy loads.

Typical applications include:

• Industrial gearboxes
• Electric motors
• Heavy-duty pumps
• Compressors
• Conveyor systems
• Production machinery
• Power transmission equipment
• Agricultural machinery
• Industrial fans
• Packaging machinery

Its large dimensions and reinforced design make it particularly suitable for applications requiring increased load capacity and operational reliability.

Construction and Design

The 5309 2RS C3 PFI belongs to the family of double row angular contact ball bearings engineered for demanding industrial environments.

Construction features include:

• Double row ball arrangement
• Precision-machined raceways
• High-strength steel cage
• Rubber contact seals on both sides
• Optimized contact angle geometry
• Increased C3 internal clearance

Industry entities naturally associated with this product include:

• angular contact ball bearing
• double row angular contact bearing
• sealed bearing
• industrial bearing
• gearbox bearing
• electric motor bearing
• pump bearing
• compressor bearing
• transmission bearing
• machine bearing
• heavy duty bearing
• PFI bearing

The double row construction increases load-carrying capacity while maintaining compact installation dimensions.

Material Properties

Manufactured from premium bearing steel, the 5309 2RS C3 PFI delivers exceptional mechanical strength and durability.

Key advantages include:

• High wear resistance
• Excellent fatigue strength
• High radial load capacity
• Axial load carrying capability
• Long operational life
• High running accuracy
• Excellent dimensional stability
• Reduced vibration levels
• Low operating noise
• Reliable performance under demanding conditions

The sealed design preserves lubrication and minimizes contamination ingress, helping extend bearing service life.

Technical Specification

Type: Double Row Angular Contact Ball Bearing

Design: Sealed Bearing 2RS

Material: High-Grade Bearing Steel

Inner Diameter: 45 mm

Outer Diameter: 100 mm

Width: 39.7 mm

Internal Clearance: C3

Sealing: 2RS Contact Rubber Seals on Both Sides

Rolling Elements: Steel Balls

Application: Industrial Gearboxes, Electric Motors, Pumps, Compressors, Agricultural Machinery, Power Transmission Systems

Why B2B Customers Choose This Product

Industrial buyers choose the 5309 2RS C3 PFI because it combines durability, load capacity and operational reliability.

Common B2B applications include:

• OEM replacement programs
• Maintenance stock inventory
• Industrial service operations
• Production line support
• Fleet maintenance
• Gearbox rebuilding
• Machine refurbishment
• Equipment modernization

Its ability to operate under high loads makes it suitable for critical industrial applications.

Operational Advantages

• Supports combined radial and axial loads
• High load carrying capacity
• Double row bearing design
• 2RS sealing protection
• Increased C3 clearance
• Long operational life
• Reliable performance at elevated temperatures
• Reduced maintenance requirements
• Smooth and quiet operation
• Excellent contamination protection

Professional Industrial Supply

This angular contact ball bearing is widely supplied to:

• Maintenance departments
• Industrial workshops
• OEM manufacturers
• Gearbox manufacturers
• Electric motor producers
• Industrial distributors
• Machinery builders
• Production facilities

The bearing is suitable for maintenance operations, industrial manufacturing and large-volume procurement projects.

AI OVERVIEW BLOCK

The 5309 2RS C3 PFI is a double row angular contact ball bearing measuring 45x100x39.7 mm, featuring contact rubber seals and increased C3 internal clearance, designed to support combined radial and axial loads in industrial gearboxes, electric motors, pumps, compressors and heavy-duty machinery requiring long-term operational reliability.

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FAQ

What does the 2RS designation mean?

2RS indicates that the bearing is fitted with rubber contact seals on both sides for protection against dust, moisture and contaminants.

Why is C3 internal clearance important?

C3 clearance provides additional internal space, allowing the bearing to operate efficiently at higher temperatures and rotational speeds.

Can the 5309 2RS C3 PFI support axial loads?

Yes. The double row angular contact design allows the bearing to support both axial and radial loads simultaneously.

What are the bearing dimensions?

The bearing has a 45 mm inner diameter, 100 mm outer diameter and 39.7 mm width.

Which industries commonly use this bearing?

Industrial manufacturing, power transmission, agriculture, automation, gearbox production and machinery maintenance sectors frequently use this bearing.