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National Engineering Industries Ltd.
Khatipura Road Jaipur – 302006 Rajasthan, India
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Toll Free: 1800 3000 6222
Telephone: +91 141 222 3221
Fax: +91 141 222 1926, 222 2259
CIN: U29130WB1946PLC013643

Tapered Roller Bearings

What are Tapered Roller Bearings?

Taper Roller Bearings have a cup, cone and rollers which are tapered in shape. Rollers are restrained by a flange on the cone against which their large end slides. These bearings can take combined loads (radial and axial) simultaneously. Projection lines of the cup and cone raceways and rollers meet at a common point on the bearing axis. 

The axial load carrying capacity of bearings increases with the increasing contact angle. Bearings are separable so a cup can be separated from cone assembly. Hence both can be mounted separately. The raceway and rollers have crown profiles. Improved surface finish of flange enables cooler running by forming a full lubrication film with the roller head.      

Products Table

Products Principal Dimensions Basic Load Ratings
Dynamic Static
d [mm] D [mm] B [mm] C [kn] Co [kn]

Types of Tapered Roller Bearings

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Single Row Tapered Roller Bearing
Double row taper roller bearing
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Double Row Tapered Roller Bearing
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Four-Row Tapered Roller Bearings
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Tapered Roller Thrust Bearings

Features of Tapered Roller Bearings

Depending upon the application requirements taper roller bearings can come in different variants such as double row, four row, etc. The primary features of taper roller bearings are:

  • This variant of roller bearings can be customized to match specific speed, weight, temperature, etc.
  • The cup is made of the outer ring of the bearing and cone assembly includes inner ring, rollers and cage.
  • The design effectively helps combine two bearings for a higher impact on productivity.
  • The separable components ensure a safe mounting and unmounting.
  • Works well in high speed and high temperature applications.

Advantages of Tapered Roller Bearings

  • A rigid bearing application can be achieved by combining two tapered roller bearings and applying a preload making these highly customisable.
  • Amps up performance, reduces friction as well as increases power density simultaneously in applications.
  • The raceways make for smooth operations in high speed operations leading to low friction, less noise and vibration.
  • It has tenacity to function even under difficult circumstances ensuring minimal downtime.
  • Manages heat well and works for a longer service time.
  • Low maintenance ensures that the resources are utilised for longer periods of time.

Applications of Tapered Roller Bearings

  • Effective for various rolling mill functions
  • Also useful in work roll operations as well as mining units.


What are tapered roller bearings used for?

Tapered roller bearings are commonly used in applications where radial and axial loads need to be supported, such as automotive wheel hubs, truck axles, industrial machinery, and agricultural equipment.

They are designed to handle both radial and thrust loads efficiently, making them suitable for heavy-duty applications where precise rotation and durability are essential.

What is a roller bearing used for?

Roller bearings, including tapered roller bearings, are used to support rotating shafts or axles while minimizing friction and allowing smooth movement.

They find widespread use in various machinery and equipment, including automotive transmissions, industrial gearboxes, electric motors, and conveyor systems, where radial or axial loads need to be supported.

What are the 4 basic parts of a tapered roller bearing?

The four basic parts of a tapered roller bearing include the inner ring, outer ring, tapered rollers, and cage or retainer.

  • The inner ring fits onto the shaft, while the outer ring provides housing and support for the bearing assembly.
  • Tapered rollers are positioned between the inner and outer rings and are guided by the cage or retainer, ensuring smooth rotation.

What is the angle of a tapered roller bearing?

The angle of a tapered roller bearing, also known as the taper angle or cone angle, is the angle formed between the axis of the bearing and the surface of the tapered rollers. This angle determines the ability of the bearing to handle radial and axial loads and affects its load-carrying capacity and performance.

What material is used for tapered roller bearings?

Tapered roller bearings are commonly made from high-quality alloy steels, such as chrome steel or bearing steel, which offer excellent strength, hardness, and fatigue resistance. These materials are chosen for their ability to withstand high loads and harsh operating conditions, ensuring reliable performance and longevity.

What shape is a taper roller bearing?

Tapered roller bearings have a unique shape characterized by tapered rollers arranged in a conical design. The inner and outer rings of the bearing assembly are also tapered to match the profile of the rollers, resulting in a compact and efficient design that can accommodate both radial and axial loads.

What are the parts of a tapered bearing?

The main parts of a tapered roller bearing include the inner ring, outer ring, tapered rollers, and cage or retainer. These components work together to support radial and axial loads while allowing smooth and precise rotation of the bearing assembly.

How are tapered roller bearings installed?

Tapered roller bearings are typically installed by pressing the bearing onto the shaft or into the housing using a hydraulic press or bearing installation tool.

Proper alignment is essential to prevent damage to the bearing or shaft during installation. Once installed, the bearing should be securely mounted and aligned to ensure optimal performance and longevit

How are tapered roller bearings measured?

Tapered roller bearings are measured based on their bore diameter, outer diameter, and width dimensions. These measurements are standardized according to international standards, to ensure compatibility and interchangeability between different bearing manufacturers.

Additionally, the taper angle or cone angle of the bearing is also specified to determine its load-carrying capacity and performance characteristics.

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