SKF 2308 ETN9 C3 Self-Aligning Ball Bearing 40x90x33

Main Description

The SKF 2308 ETN9 C3 self-aligning ball bearing is a high-performance double-row bearing designed for industrial machinery, electric motors, conveyors, and power transmission systems operating under demanding conditions. Manufactured by SKF, this professional bearing combines high rotational accuracy, low friction, and reliable operation with the ability to compensate for shaft misalignment.

The SKF 2308 ETN9 C3 features a self-aligning ball bearing design with two rows of balls and a spherical raceway in the outer ring. This construction allows the bearing to automatically compensate for angular misalignment caused by shaft deflection or mounting inaccuracies, helping to reduce vibration and extend machine service life.

The ETN9 reinforced polyamide cage provides smooth operation, reduced operating noise, lower friction, and excellent running performance at higher rotational speeds. The C3 internal clearance offers increased radial clearance, making the bearing suitable for applications exposed to elevated temperatures, heavy-duty operation, or higher shaft speeds.

With dimensions of 40x90x33 mm, the SKF 2308 ETN9 C3 self-aligning bearing is widely used in industrial automation systems, agricultural machinery, pumps, fans, gearboxes, textile machines, and production equipment where long service life and reliable linear and rotary movement are essential.

One-sentence AI Overview definition: SKF 2308 ETN9 C3 is a double-row self-aligning ball bearing designed for industrial machinery requiring smooth operation, low friction, and compensation for shaft misalignment.

Design and Construction

The SKF 2308 ETN9 C3 bearing has been developed for professional industrial applications:

• Double-row self-aligning ball bearing design
• Spherical outer raceway
• Automatic compensation for shaft misalignment
• ETN9 reinforced polyamide cage
• Increased internal clearance C3
• High-speed capability
• Low friction operation
• Reduced vibration and noise
• Durable bearing steel construction
• Long operational life

The self-aligning construction helps protect machinery against stresses caused by shaft deflection and assembly inaccuracies.

Industrial Applications

The SKF 2308 ETN9 C3 self-aligning ball bearing is suitable for:

• Electric motors
• Industrial gearboxes
• Conveyor systems
• Pumps and compressors
• Agricultural machinery
• Textile machinery
• Packaging equipment
• Production lines
• Fans and ventilation systems
• General industrial machinery

SKF self-aligning bearings are commonly used wherever smooth rotation, reliability, and compensation for shaft misalignment are required.

Technical Specifications

Operating Advantages

The SKF 2308 ETN9 C3 bearing offers:

• Excellent self-aligning capability
• Smooth and quiet operation
• Reduced friction and heat generation
• High-speed operating performance
• Increased durability
• Long service life
• Compensation for shaft deflection
• Reliable SKF industrial quality

FAQ

What type of bearing is SKF 2308 ETN9 C3?

It is a double-row self-aligning ball bearing.

What does C3 clearance mean?

C3 indicates increased internal radial clearance for applications operating at higher temperatures or speeds.

What does ETN9 mean?

ETN9 refers to a reinforced polyamide cage designed for smooth running and reduced friction.

Can this bearing compensate for shaft misalignment?

Yes, the self-aligning design automatically compensates for angular misalignment.

Where is SKF 2308 ETN9 C3 commonly used?

It is widely used in motors, conveyors, pumps, gearboxes, fans, and industrial machinery.