NTN HM804849/HM804810 Tapered Roller Bearing – 48.412x95.25x30.162 mm

Product Overview

The NTN HM804849/HM804810 is a premium-quality single-row tapered roller bearing manufactured in the inch dimension series. Designed to support both radial and axial loads simultaneously, it offers exceptional durability, high load capacity and long service life in demanding operating conditions.

This bearing consists of two matching components:

• HM804849 – tapered cone (inner ring with tapered rollers)
• HM804810 – cup (outer ring)

The precision geometry of the tapered rollers ensures optimal load distribution, reduced friction and reliable operation under heavy loads and varying speeds.

With dimensions of 48.412 mm bore, 95.25 mm outside diameter and 30.162 mm total width, the NTN HM804849/HM804810 is widely used in trailers, agricultural machinery, industrial gearboxes, wheel hubs, construction equipment and heavy-duty power transmission systems.

Technical Specifications

Key Features

The NTN HM804849/HM804810 offers:

• Genuine NTN quality
• High radial and axial load capacity
• Inch-series precision dimensions
• Optimized tapered roller geometry
• Pressed steel cage
• Excellent running accuracy
• Low rolling resistance
• Long service life
• High durability under shock loads
• Reliable performance in heavy-duty applications
• Easy installation and maintenance

Typical Applications

The NTN HM804849/HM804810 tapered roller bearing is commonly used in:

• Trailer wheel hubs
• Agricultural machinery
• Construction equipment
• Industrial gearboxes
• Mining machinery
• Forestry equipment
• Axles and wheel hubs
• Heavy-duty industrial transmissions
• Material handling equipment
• Off-road vehicles
• General industrial machinery

Bearing Design Explained

HM804849

The HM804849 is the cone assembly, consisting of the inner ring, tapered rollers and pressed steel cage.

HM804810

The HM804810 is the matching outer ring (cup) designed specifically for the HM804849 cone.

Tapered Roller Design

Tapered roller bearings provide:

• Simultaneous support of radial and axial loads
• Excellent rigidity
• High load capacity
• Accurate shaft guidance
• Long operating life
• Low friction and smooth operation

Inch Series

This bearing belongs to the imperial (inch) series, commonly used in North American vehicles, trailers, agricultural equipment and industrial machinery.

Why Choose NTN Bearings?

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

NTN bearings are recognized for:

• Precision engineering
• Outstanding manufacturing quality
• Excellent durability
• High load ratings
• Long operating life
• Reliable performance
• Worldwide OEM acceptance

Frequently Asked Questions (FAQ)

What are the bearing dimensions?

The bearing measures 48.412 × 95.25 × 30.162 mm.

Is this a complete bearing?

Yes. HM804849/HM804810 includes both the cone (inner ring with rollers) and the matching cup (outer ring).

What loads can this bearing support?

It is designed to support both radial and axial loads simultaneously, making it suitable for heavy-duty applications.

Is this an inch-series bearing?

Yes. It belongs to the imperial (inch) bearing series.

Where is this bearing commonly used?

It is widely used in trailer hubs, agricultural machinery, industrial gearboxes, wheel hubs and heavy-duty industrial equipment.

Frequently Asked Questions from Engineers

Why use a tapered roller bearing instead of a ball bearing?

Tapered roller bearings provide significantly higher load capacity and can simultaneously accommodate both radial and axial loads.

What are the most common causes of bearing failure?

• Incorrect preload
• Improper installation
• Contamination
• Insufficient lubrication
• Overloading
• Misalignment
• Excessive operating temperatures

How can bearing life be extended?

Use the correct preload, apply high-quality lubrication, prevent contamination, inspect seals regularly and avoid overload conditions.