NTN AEL211 D1W3 Insert Ball Bearing – 55x100x48.4 mm

Product Overview

The NTN AEL211 D1W3 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 provides outstanding durability, precise shaft locking and long service life under demanding operating conditions.

This bearing features a spherical outside diameter, allowing automatic alignment inside compatible bearing housings to compensate for minor shaft misalignment.

The D1W3 version is equipped with set screw shaft locking, a relubrication groove with lubrication holes, factory grease and heavy-duty double-lip seals, providing excellent protection against dust, dirt and moisture.

With dimensions of 55 mm bore, 100 mm outside diameter and 48.4 mm overall width, the NTN AEL211 D1W3 is widely used in agricultural equipment, conveyor systems, processing machinery and industrial mounted bearing units.

Technical Specifications

Key Features

The NTN AEL211 D1W3 offers:

• Original NTN quality
• Set screw shaft locking
• Relubricatable design
• Lubrication groove and grease holes
• Spherical outside diameter for self-alignment
• Double-lip sealing system
• Excellent contamination protection
• Smooth and quiet operation
• High radial load capacity
• Long service life
• Easy installation
• Reliable operation in demanding environments

Typical Applications

The NTN AEL211 D1W3 is commonly used in:

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

Bearing Design Explained

AEL211

The AEL211 designation identifies a self-aligning insert ball bearing with a spherical outside diameter designed for installation in mounted bearing housings.

D1

The D1 suffix indicates:

• Lubrication groove
• Lubrication holes
• Relubricatable bearing design

W3

The W3 suffix indicates:

• Set screw shaft locking
• Secure and reliable shaft fixation
• Easy installation and removal

Double-Lip 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 one of the world's leading bearing manufacturers, supplying premium bearings for OEMs and industrial maintenance worldwide.

NTN bearings are known for:

• Precision engineering
• Outstanding manufacturing quality
• Long operating life
• High reliability
• Excellent wear resistance
• Consistent performance under heavy-duty conditions

FAQ

What are the bearing dimensions?

The bearing measures 55 × 100 × 48.4 mm.

What does D1 mean?

D1 indicates that the bearing includes a lubrication groove and lubrication holes, allowing periodic relubrication.

What does W3 mean?

W3 indicates a set screw locking system for secure shaft mounting.

Is the bearing factory greased?

Yes. The bearing is factory lubricated and can be relubricated during service.

Why does the bearing have a spherical outside diameter?

The spherical outer surface allows automatic alignment inside compatible bearing housings, reducing stress caused by minor shaft misalignment.

Frequently Asked Questions from Engineers

When should a set screw insert bearing be used?

Set screw locking bearings are recommended for applications requiring simple installation, secure shaft fixation and reliable operation under moderate to heavy loads.

What are the most common causes of insert bearing failure?

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

How can bearing life be extended?

Install the bearing correctly, tighten the set screws according to the manufacturer's recommendations, relubricate at scheduled intervals and prevent contamination.