Single row tapered roller bearings are designed to accommodate combined loads, i.e. radial and axial loads acting simultaneously. The extension lines of the raceways meet at the same point on the bearing axis to achieve true rolling and therefore low friction torque during operation. The axial load capacity of tapered roller bearings increases with increasing contact angle α. The size of the contact angle is usually between 10° and 30°. The size of the angle is related to the calculation coefficient e: the larger the value of e, the larger the contact angle.
The optimized roller design on the ribs and the surface finish of the ribs promote the formation of a lubricant film, thereby reducing friction. This also reduces frictional heat and flange wear. In addition, the bearings maintain preload better and reduce noise levels during operation.
Basic Bearing Design Bearings and Convex Raceways Logarithmic raceway shapes optimize load distribution along the contact surface, reduce stress peaks at the roller ends, and reduce sensitivity to misalignment and shaft deflection with conventional straight lines.
Optimized surface treatment of the roller and raceway contact surfaces facilitates the formation of a hydrodynamic lubricant film.
The manufacturing tolerances and dimensional accuracy of the rollers integrated in tapered roller bearings are so precise that they are almost identical. This provides optimal load distribution to reduce noise and vibration levels and enables more precise preloading.
A single row tapered roller bearing usually needs to be adjusted in conjunction with another tapered roller bearing. By applying preload, rigid bearing applications can be achieved.
Tapered roller bearings typically have a running-in period during which conventionally designed tapered roller bearings experience significant amounts of friction, resulting in wear. This effect is noted as a temperature spike. The use of tapered roller bearings can significantly reduce friction, wear and frictional heat, provided the bearings are installed and lubricated accurately.
That is, the inner ring with roller and cage assembly (inner ring assembly) can be installed separately from the outer ring. Additionally, the detachable parts are interchangeable. This facilitates installation, removal and maintenance inspection procedures.
