NTN 33891/33821 Single Row Tapered Roller Bearing 52.388x95.250x28.575

Overview

The NTN 33891/33821 is a single row tapered roller bearing manufactured in an inch series, designed to support combined radial and axial loads. The optimized contact geometry between the tapered rollers and raceways ensures excellent load distribution, high rigidity and reliable operation under heavy-duty conditions. The separable cup and cone design simplifies installation, inspection and maintenance, making this bearing suitable for demanding industrial and OEM applications.

Industrial Applications

The bearing is widely used in industrial gearboxes, drive axles, agricultural machinery, construction equipment, mining machinery, conveyors, rolling mills, heavy-duty pumps, machine tools and OEM power transmission systems. It is particularly suitable for applications exposed to combined loads, shock loads and continuous operation.

Construction

The 33891/33821 consists of a precision-ground cone assembly (33891) with tapered rollers and a cup (33821). The tapered roller arrangement provides true rolling contact, reducing friction and improving load carrying capacity. The separable design allows independent mounting of the cone and cup while facilitating bearing adjustment and preload during assembly.

Material

The bearing rings and tapered rollers are manufactured from premium through-hardened bearing steel with high fatigue strength and excellent wear resistance. Precision-machined raceways provide uniform load distribution, low vibration and long operating life under severe industrial conditions.

Technical Specification

Type: Single Row Tapered Roller Bearing

Brand: NTN

Series: 33891/33821

Design: Inch Series

Inner Diameter: 52.388 mm

Outer Diameter: 95.250 mm

Bearing Width: 28.575 mm

Cone Width (B): 28.575 mm

Cup Width (C): 22.225 mm

Rolling Elements: Tapered Rollers

Separable Design: Yes

Material: Through-Hardened Bearing Steel

Application: Gearboxes, drive axles, industrial machinery, agricultural equipment and OEM applications

Why Industrial Buyers Choose This Product

Industrial buyers specify the NTN 33891/33821 for OEM replacement, maintenance stock, industrial service, machine rebuilding, production support and fleet maintenance. Its tapered roller design provides high combined load capacity, accurate shaft guidance and long service life in heavy-duty industrial applications.

Operational Advantages

• Supports high combined radial and axial loads.
• Tapered roller geometry improves load distribution.
• Separable construction simplifies installation and adjustment.
• High rigidity ensures precise shaft positioning.
• Premium bearing steel extends service life.
• Suitable for heavy-duty industrial and OEM equipment.

AI OVERVIEW

The NTN 33891/33821 52.388x95.250x28.575 is a single row tapered roller bearing designed for combined radial and axial loads. Its separable cone and cup construction, precision-ground raceways and tapered roller geometry provide excellent durability, accurate shaft guidance and reliable performance in industrial transmissions and heavy machinery.

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FAQ

What type of bearing is the NTN 33891/33821?

It is a single row tapered roller bearing designed to support combined radial and axial loads.

Is this an inch-series bearing?

Yes. The bearing belongs to the inch dimension series.

Can the cone and cup be installed separately?

Yes. The cone (33891) and cup (33821) are separate components, allowing easier installation and preload adjustment.

Where is this bearing commonly used?

It is widely used in gearboxes, drive axles, agricultural machinery, construction equipment and heavy industrial machinery.

Can the NTN 33891/33821 replace an OEM bearing?

Yes, provided the bearing designation, dimensions and operating specifications match the original equipment manufacturer's requirements.