NTN AEL208 Insert Ball Bearing – 40x80x43.7 mm

Product Overview

The NTN AEL208 Insert Ball Bearing is a premium-quality insert ball bearing designed for mounted bearing units used in agricultural, industrial and material handling applications. Manufactured by NTN Corporation, it combines excellent durability, reliable shaft locking and superior sealing performance.

The bearing features an eccentric locking collar, providing quick and secure attachment to a smooth shaft while preventing shaft slippage during operation. Its spherical outside diameter allows for automatic alignment within compatible bearing housings, compensating for minor shaft misalignment.

Equipped with double-contact seals and factory-filled premium grease, the AEL208 offers outstanding protection against dust, dirt and moisture, ensuring long service life and dependable performance in demanding environments.

With dimensions of 40 mm bore, 80 mm outside diameter and 43.7 mm overall width, the NTN AEL208 is widely used in agricultural machinery, conveyor systems, packaging equipment and industrial bearing units.

Technical Specifications

Key Features

The NTN AEL208 offers:

• Original NTN quality
• Eccentric locking collar for secure shaft mounting
• Spherical outside diameter for self-alignment
• Double-contact sealing system
• Excellent protection against dust and moisture
• Factory-filled premium grease
• Relubricatable design
• High radial load capacity
• Smooth and quiet operation
• Long service life
• Easy installation
• Reliable performance in harsh operating conditions

Typical Applications

The NTN AEL208 insert bearing is commonly used in:

• Agricultural machinery
• Disc harrows
• Seed drills
• Balers
• Harvesters
• Conveyor systems
• Packaging machinery
• Food processing equipment
• Material handling systems
• Industrial conveyors
• Mounted bearing units
• General industrial machinery

Bearing Design Explained

AEL208

The designation AEL208 identifies an insert ball bearing designed for mounted bearing housings and fitted with an eccentric locking collar.

Eccentric Locking Collar

The eccentric locking collar provides:

• Secure shaft locking
• Fast installation
• Reliable torque transmission
• Resistance to vibration
• Reduced shaft movement during operation

Spherical Outside Diameter

The spherical outer surface allows:

• Self-alignment within the housing
• Compensation for minor shaft misalignment
• Reduced stress on the bearing
• Improved operating reliability

Double Contact Seals

The sealing system:

• Retains lubricant inside the bearing
• Prevents dust and dirt ingress
• Protects against moisture
• Extends bearing service life
• Minimizes maintenance requirements

Why Choose NTN Bearings?

NTN Corporation is one of the world's leading manufacturers of rolling bearings, supplying OEMs and maintenance professionals across the agricultural, automotive and industrial sectors.

NTN bearings are recognized for:

• Precision engineering
• Outstanding manufacturing quality
• Excellent durability
• Long operating life
• Consistent performance
• High reliability in demanding applications

FAQ

What are the bearing dimensions?

The bearing measures 40 × 80 × 43.7 mm.

What type of locking system does it use?

The AEL208 uses an eccentric locking collar for fast and secure shaft mounting.

Is the bearing pre-lubricated?

Yes. It is factory-filled with premium grease and is designed for relubrication when required.

Why does the bearing have a spherical outside diameter?

The spherical outer surface allows the bearing to self-align within compatible bearing housings, compensating for minor shaft misalignment.

Where is this bearing commonly used?

It is widely used in agricultural machinery, conveyor systems, mounted bearing units, packaging equipment and general industrial machinery.

Frequently Asked Questions from Engineers

What are the advantages of an eccentric locking collar?

It provides secure shaft fixation, quick installation, dependable torque transmission and reliable operation under vibration and varying loads.

What are the most common causes of insert bearing failure?

• Incorrect shaft locking
• Contamination
• Insufficient lubrication
• Misalignment
• Excessive loads
• Corrosion
• Damaged seals

How can bearing life be extended?

Use the correct shaft tolerances, properly tighten the eccentric locking collar, keep contaminants away from the bearing, relubricate at recommended intervals and avoid excessive operating loads.