How Are Tapered Roller Bearings Made?

- Jun 19, 2020-

If you are looking for a bearing that is strong enough to hold large radial forces while absorbing large axial forces, you will probably need a tapered roller bearing. The inner ring of the roller located in the cone is separated from the outer ring or cup by a thin layer of material such as steel, aluminum, sheet steel and/or stainless steel. 


The roller is designed as a tapered segment so that the conical surface of the raceway and the roller axis meet. Tapered roller bearings have tapered rollers arranged in a roller and angled so that both the inner and outer ring and raceways taper simultaneously during projection, causing the surfaces of each roller to converge to form the axis of a bearing. 

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Each bearing is unique in that it can handle a large amount of load, as most bearings can handle both axial and radial loads. Single-row tapered bearings are limited in that they can only accommodate high axial loads in one direction. The adjustment of the second tapered roller bearing counteracts the axial load due to the set radial load in both directions. 


This enables the bearing to absorb both high radial and axial loads in several directions. Axial ball bearings are capable of handling shaft displacements and are designed for use in all applications, but primarily under axial loads. The bearing is also more flexible than a single row tapered roller bearing, as it can be adjusted in two directions simultaneously, allowing it to absorb high radial or axis loads from multiple directions. 


Axial bearings are designed to transfer loads from one side of the bearing to the other, which means that they can accommodate radial and axial loads. 


Rolling bearings generally tolerate a misalignment poorly compared to ball bearings, but spherical roller bearings remedy this defect. Finally, spherical roller bearings are used due to their ability to tolerate deflections caused by both static and dynamic loads. These bearings also have the self-alignment capability, making them ideal for use in a variety of applications, such as power transmission and power distribution systems. 


When using a single row version, spherical roller bearings have low thrust, but with a double row version, they can handle up to 1,000 pounds of thrust per square inch. 

The sealing and shielding of rolling bearings is not as simple as with ball bearings, but the cylinder and taper roller, in this case, is made of hardened alloy steel, ensuring superior durability and reliability. Tapered roller bearings, such as the TAPER series, have carbonated components in the single- and double-row versions. 

This further contributes to reliable bearing performance, but without the carbonated components, the twin-pin bearings would fail due to excessive friction-induced heat. 

Timken has managed to significantly reduce friction on its axle bearings by adding tapered elements that roll when the load is transferred from the axle to the frame, making them extremely durable. This is used in applications involving rotating axes and gear shafts. Their durability is crucial for waves, which often need to be maintained after hundreds or thousands of kilometers of operation. 

The load is spread over a wide range, allowing the bearings to cope with a much wider range of conditions, such as high pressure, low pressure and high temperatures. 

Like ball bearings, roller bearings are available in single-, two- and multi-row designs and can be designed for radial or axial loads. Unlike ball bearings, they can contain a cage that separates the roll from the ball, as well as a single or more series of bearings. 

Single row tapered roller bearings can be dismantled to allow separate mounting of inner and outer rings, as well as used in a variety of other applications. 

KRW supplies tapered roller bearings according to DIN for a wide range of applications, such as in the automotive industry. Tapered roller cones are standardized by KRW in their design and construction, whereby a variety of different sizes, shapes, and sizes are available. 

They feature matching single-row, tapered bearings, resulting in a contact angle that transmits the force at the same angle to the rear of the rolling cone as the contact point on the front of each rolling bearing. 

At larger angles, the bearing is able to handle thrust loads, but at smaller angles, the thrust load induces a radial load, which proportionally reduces the load-bearing capacity of the radial loads. For this reason, tapered roller bearings are always combined with a second bearing. In addition to the radial forces, this pair is particularly suitable for medium and high speeds and absorbs both axial and combined forces. 

A bearing equipped with a single row of tapered rollers can only withstand axial loading in one direction. Tapered roller bearings are manufactured in a variety of shapes and sizes, e.g. single row, double row, and double row.