NTN AEL205 Insert Ball Bearing – 25x52x31 mm

Product Overview

The NTN AEL205 Insert Ball Bearing is a premium-quality insert ball bearing designed for mounted bearing units and agricultural, industrial and material handling applications. Manufactured by NTN Corporation, one of the world's leading bearing manufacturers, the AEL205 delivers reliable performance, excellent sealing and long service life in demanding operating environments.

This bearing features an eccentric locking collar, allowing quick and secure shaft mounting while preventing shaft slippage during operation. The double-lip seals protect the bearing against dust, dirt and moisture, while the factory-filled grease ensures maintenance-friendly operation.

With dimensions of 25 mm bore, 52 mm outside diameter and 31 mm overall width, the NTN AEL205 is widely used in agricultural machinery, conveyors, packaging equipment and mounted bearing housings.

Technical Specifications

Key Features

The NTN AEL205 offers:

• Original NTN quality
• Eccentric locking collar for secure shaft fixation
• Excellent protection against dust and moisture
• Factory-filled premium grease
• Low operating friction
• Smooth and quiet running
• High load capacity
• Long service life
• Easy installation
• Reliable performance in harsh environments
• Suitable for relubrication
• Corrosion-resistant bearing design

Typical Applications

The NTN AEL205 insert bearing is commonly used in:

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

Bearing Design Explained

AEL205

The designation AEL205 identifies an insert ball bearing equipped with an eccentric locking collar, specifically designed for installation in bearing housings.

Eccentric Locking Collar

The eccentric locking collar provides:

• Secure shaft locking
• Quick installation
• Reliable torque transmission
• Resistance to shaft vibration
• Reduced risk of shaft movement during operation

Double Contact Seals

The sealing system:

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

Why Choose NTN Bearings?

NTN Corporation is recognized worldwide for manufacturing premium rolling bearings used across agriculture, automotive, industrial automation and heavy machinery.

NTN bearings are valued for:

• Precision engineering
• Excellent manufacturing quality
• Outstanding durability
• Long operating life
• Reliable performance
• Consistent dimensional accuracy
• Global OEM acceptance

FAQ

What are the bearing dimensions?

The bearing measures 25 × 52 × 31 mm.

What type of locking system does it use?

The AEL205 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 can be relubricated through compatible housing arrangements.

Can it operate in dusty environments?

Yes. The double-contact sealing system provides excellent protection against dust, dirt and moisture.

Where is this bearing commonly used?

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

Frequently Asked Questions from Engineers

What are the advantages of an eccentric locking collar?

It provides secure shaft fixation, quick installation, reliable torque transmission and dependable performance in moderate-speed applications.

What are the most common causes of insert bearing failure?

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

How can bearing life be extended?

Ensure correct shaft tolerances, properly tighten the eccentric locking collar, keep contamination away from the bearing, relubricate according to maintenance intervals and avoid excessive operating loads.