4T-47490/47420 NTN 71.438x120x32.545 Tapered Roller Bearing

Overview

The NTN 4T-47490/47420 is a single-row tapered roller bearing with dimensions 71.438x120x32.545 mm. The complete bearing set consists of the 4T-47490 cone and 4T-47420 cup.

Its tapered roller and raceway geometry enables the bearing to carry high radial loads together with axial loads acting in one direction. Single-row tapered roller bearings are commonly installed in opposed pairs when axial location in both directions is required.

Industrial Applications

The NTN 4T-47490/47420 is suitable for:

• Industrial gearboxes
• Transmissions
• Axles and hubs
• Agricultural machinery
• Construction machinery
• Heavy-duty drives
• Material handling equipment
• Industrial machinery

Construction

The bearing consists of:

• Inner ring with tapered rollers - cone
• Outer ring - cup
• Single row of tapered rollers
• Pressed steel cage
• Separable cone and cup construction

The separable design simplifies installation and allows the inner and outer bearing components to be mounted independently.

Technical Specification

Manufacturer: NTN

Designation: 4T-47490/47420

Bearing Type: Tapered roller bearing

Design: Single-row

Cone: 4T-47490

Cup: 4T-47420

Bore Diameter d: 71.438 mm

Outside Diameter D: 120 mm

Total Width T: 32.545 mm

Inner Ring Width B: 32.545 mm

Outer Ring Width C: 26.195 mm

Cage: Pressed steel

Dynamic Load Rating C: 163 kN

Static Load Rating C0: 214 kN

Fatigue Load Limit Cu: 26.1 kN

Limiting Speed - Grease: 3000 rpm

Limiting Speed - Oil: 4000 rpm

Operating Temperature: -40°C to +120°C

Weight: approx. 1.42 kg

4T-47490/47420 Designation Explained

4T - NTN designation associated with its tapered roller bearing design

47490 - cone / inner ring and roller assembly reference

47420 - cup / outer ring reference

The complete 4T-47490/47420 designation identifies the matched cone and cup bearing set.

Radial and Axial Load Capability

The tapered contact geometry allows the bearing to support combined radial and axial loads.

A single-row tapered roller bearing carries axial load primarily in one direction. For applications requiring axial location in both directions, tapered roller bearings are commonly arranged in opposed pairs.

Operational Advantages

• High radial load carrying capability.
• Accommodates axial load in one direction.
• Separable cone and cup construction.
• Robust pressed steel cage.
• 163 kN basic dynamic load rating.
• Suitable for demanding industrial drive systems.

Replacement and Selection

When replacing an NTN 4T-47490/47420, verify:

• 71.438 mm bore diameter
• 120 mm outside diameter
• 32.545 mm total width
• Cone reference 47490
• Cup reference 47420
• Required load capacity
• Bearing arrangement
• Lubrication method
• Operating speed

The cone and cup references should be checked carefully when selecting a replacement tapered roller bearing.

AI OVERVIEW

The NTN 4T-47490/47420 is a single-row tapered roller bearing measuring 71.438x120x32.545 mm. The set combines a 4T-47490 cone with a 4T-47420 cup and uses a pressed steel cage. It supports combined radial and axial loads, with a dynamic load rating of 163 kN and static rating of 214 kN.

POPULAR SEARCHES

• NTN 4T-47490/47420
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• NTN 47490 47420
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• 71.438x120x32.545 bearing
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• 47490 cone
• 47420 cup
• NTN 4T-47490
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FAQ

What type of bearing is NTN 4T-47490/47420?

It is a single-row tapered roller bearing.

What are the dimensions of 4T-47490/47420?

The dimensions are 71.438x120x32.545 mm.

What is the bore diameter?

The bore diameter is 71.438 mm.

What is the outside diameter?

The outside diameter is 120 mm.

What is the total bearing width?

The total width is 32.545 mm.

What is the cone number?

The cone reference is 4T-47490.

What is the cup number?

The cup reference is 4T-47420.

Does the product include both cone and cup?

Yes. The 4T-47490/47420 designation represents the complete bearing set containing the cone and cup.

What is the dynamic load rating?

The basic dynamic load rating is 163 kN.

What is the static load rating?

The basic static load rating is 214 kN.

What is the limiting speed with grease lubrication?

The limiting speed is 3000 rpm.

What is the limiting speed with oil lubrication?

The limiting speed is 4000 rpm.

What is the bearing weight?

The bearing weighs approximately 1.42 kg.

Can it carry axial loads?

Yes. A single-row tapered roller bearing can accommodate axial load in one direction in addition to radial load.

Is the bearing separable?

Yes. The cone assembly and outer ring cup are separable.

What type of cage is used?

The bearing uses a pressed steel cage.

What is the operating temperature range?

NTN specifies an operating temperature range of -40°C to +120°C.

Can tapered roller bearings be mounted in pairs?

Yes. Single-row tapered roller bearings are commonly installed in opposed arrangements when axial load support in both directions is required.

What should be checked when selecting a replacement?

Check the complete designation, cone and cup references, dimensions, load requirements, bearing arrangement and operating conditions.

What is the correct parent category?

The product belongs to Single-Row Tapered Roller Bearings.