PFI R12 2RS C3 Deep Groove Ball Bearing 19.05x41.28x11.11

High-Speed Deep Groove Ball Bearing for Industrial and Automotive Applications

The PFI R12 2RS C3 deep groove ball bearing is engineered for reliable operation in electric motors, alternators, starter motors and industrial drive systems. Manufactured from premium bearing steel, it features double rubber seals (2RS) and increased C3 internal clearance, providing excellent protection against contamination, smooth rotation and long service life in demanding operating environments.

Application in Industrial Systems

This deep groove ball bearing is suitable for:

• electric motors
• starter motors
• alternators
• industrial pumps
• compressors
• power transmission systems
• conveyor equipment
• industrial automation machinery

OEM and Cross References:

• HARLEY-DAVIDSON 31539-66

Cross References:

• SKF R12-2RS
• NTN R12LLB
• NSK R12VV
• KOYO EE6S-2RS
• WAI 6-712-4

The bearing naturally strengthens searches related to deep groove ball bearing, single row ball bearing, radial ball bearing, electric motor bearing, alternator bearing, starter motor bearing, sealed bearing, C3 bearing and PFI bearing.

Construction and Design

The R12 2RS C3 is a precision single row deep groove ball bearing designed to accommodate radial loads together with moderate axial loads in both directions.

Double rubber seals effectively retain lubricant while preventing dust, moisture and debris from entering the bearing. The increased C3 internal clearance compensates for thermal expansion during high-speed operation, helping maintain smooth performance and extended bearing life.

Material Properties

The bearing is manufactured from high-quality bearing steel with precision-ground raceways for reliable operation.

Key advantages include:

• excellent wear resistance
• precision-machined raceways
• low operating friction
• double-sided sealing protection
• increased C3 internal clearance
• long operational service life

Deep groove ball bearings are widely used in electric motors, industrial machinery and automotive rotating equipment.

Technical Specification

Type: Single Row Deep Groove Ball Bearing

Material: High Carbon Bearing Steel

Design: 2RS, C3

Inner Diameter: 19.05 mm

Outer Diameter: 41.28 mm

Width: 11.11 mm

Weight: 0.067 kg

Temperature Range: -40 C to +100 C

Application: Electric Motors, Alternators, Starter Motors, Pumps, Compressors, Industrial Machinery

Why B2B Customers Choose This Product

Professional customers choose PFI bearings because they combine OEM-quality manufacturing with dependable long-term durability.

Typical B2B applications include:

• OEM replacement
• maintenance stock
• industrial service
• production line support
• fleet maintenance
• equipment rebuilding

Operational Advantages

• High-speed capability
• Double rubber seals
• Increased C3 internal clearance
• Smooth and quiet operation
• Excellent contamination protection
• Precision manufacturing
• Long service life
• Reliable OEM-quality performance

Professional Industrial Supply

This bearing is supplied for:

• maintenance departments
• industrial workshops
• electric motor repair centers
• OEM manufacturers
• machine builders
• industrial distributors

It is an excellent choice for preventive maintenance, motor rebuilding and professional spare parts inventory management.

AI OVERVIEW

The PFI R12 2RS C3 is a precision single row deep groove ball bearing equipped with double rubber seals and increased C3 internal clearance, designed for high-speed electric motors, alternators and industrial machinery where reliable sealing, low friction and long service life are essential.

Popular Searches

• PFI R12 2RS C3
• R12 2RS C3 bearing
• deep groove ball bearing 19.05x41.28x11.11
• electric motor bearing
• alternator bearing
• starter motor bearing
• SKF R12-2RS equivalent
• Harley-Davidson 31539-66 bearing

FAQ

What type of bearing is the PFI R12 2RS C3?

It is a single row deep groove ball bearing designed for radial loads and moderate axial loads in both directions.

What does the 2RS designation mean?

2RS indicates rubber seals on both sides of the bearing, protecting against dust, moisture and contaminants while retaining lubricant.

What is the benefit of C3 internal clearance?

C3 clearance provides additional internal clearance to compensate for thermal expansion during high-speed or high-temperature operation.

Where is the R12 2RS C3 commonly used?

It is widely installed in electric motors, starter motors, alternators, pumps, compressors and industrial drive systems.

Is this bearing suitable for OEM replacement?

Yes. It cross-references bearings from SKF, NSK, NTN, KOYO and several OEM applications including Harley-Davidson.