Single row tapered roller bearings are widely used in many applications. They consist of a tapered inner ring assembly and an outer ring. Even under the harshest conditions, the tapered single roller bearing series easily accommodates radial and axial loads and offers the benefit of low friction during operation. AUB offers single row tapered roller bearings in a wide range of inch and metric sizes. Single row tapered roller bearings are available in two types, small cone angle and large cone angle. The small cone angle mainly bears the combined radial and axial loads dominated by radial loads. Often used in pairs, installed in reverse. The inner and outer rings can be installed separately, and the radial and axial clearances can be adjusted during installation and use; the large cone angle mainly bears the combined axial and radial loads, mainly axial loads. Generally, they are not used alone to bear pure axial loads, but they can be used to bear pure radial loads when arranged in pairs (the opposite ends of the same name are installed).
Single row tapered roller bearings are designed to accommodate combined loads, ie radial and axial loads acting simultaneously. The extensions of the raceways intersect at the same point on the axis of the bearing for true rolling. Therefore, single row tapered roller bearings have a low frictional moment during operation. The axial load of a single row tapered roller bearing depends on the contact angle. They are usually installed in pairs. In this case, proper internal clearance can be obtained by adjusting the axial distance between the inner or outer rings of the two opposing bearings. The axial load capacity of single row tapered roller bearings increases with the increase of contact angle α. The size of the contact angle (usually 10° to 30°) is related to the calculated coefficient e. The larger the e value, the larger the contact angle. Single row tapered roller bearings are available in both metric and inch sizes.
Measuring system: imperial, metric
Chromium steel is the most commonly used material for single row tapered roller bearings because of its high load capacity and low noise. 440c stainless steel is recommended when used in anti-rust environments. This stainless steel can withstand high loads and high speeds at the same time, and the material is also rust-resistant.
Factors to consider when selecting an ABEC grade include radial and axial runout requirements, bore and outside diameter fit, and audible noise levels. AUB Bearing offers these types of grades which show the available bore and outside diameter dimensional tolerances, as well as the runout limits for each grade. ABEC Grade 3 is preferred for routine applications. In general, raceway finish and raceway geometry are superior to ABEC 5. These grades are generally recommended for precision assemblies where low noise, minimal runout and long life are important considerations for single row tapered roller bearings.
Single row tapered roller bearings are available in various seal types. They are open single row tapered roller bearings, sealed (rubber seal) single row tapered roller bearings and protected (metal shield) single row tapered roller bearings. Open single row tapered roller bearings are the most common, while other sealed classes of tapered roller bearings require customization.
AUB's single row tapered roller bearings are supplied by default with solid brass window cages with ribs (suffix: MP) or steel sheet cages with rolling elements. Other cage designs are available on request or selected for specific applications and marked accordingly on the bearing.
The operating clearance or prestress of a tapered roller bearing is adjusted after assembly with the positioning of a second tapered roller bearing in a mirror image arrangement.
low friction
The optimized roller design on the ribs and the surface finish of the ribs promote the formation of a lubricating oil film, thereby reducing friction. This reduces frictional heat and wear on the flanges. In addition, single row tapered roller bearings can better maintain preload and reduce noise levels during operation.
long lasting
Convex raceways s, in detail, logarithmic raceways s of single row tapered roller bearings are shaped to optimize load distribution along the contact surfaces, reduce stress peaks at roller ends, and reduce sensitivity to misalignment and shaft deflection sex.
Improve operational reliability
Optimized surface treatment of the roller-raceway contact surfaces promotes the formation of a hydrodynamic lubricating film.
Consistency of drum profile and dimensions
The rollers integrated in single row tapered roller bearings are manufactured with such exacting tolerances and dimensional accuracy that they are nearly identical. This provides optimum load distribution for single row tapered roller bearings, reduces noise and vibration levels and enables more precise preload.
Rigid Bearing Applications
In some applications, single row tapered roller bearings often need to be adjusted together with another tapered roller bearing. Rigid bearing applications can be achieved by applying a preload.
Temperature drop peak run-in period
Single row tapered roller bearings usually have a running-in period. During this time, single row tapered roller bearings of conventional designs are subject to high friction, which can lead to wear. This will cause the bearing temperature to rise.
As long as the bearing is installed correctly and lubricated effectively, Lili Bearing can provide you with the best solution. This solution significantly reduces friction, wear during operation and the large amount of heat generated during friction.
Separability and Interchangeability
Single row tapered roller bearings are separable by design. The inner ring (Cup) with roller and cage assembly can be mounted separately from the outer ring (Cup). Additionally, tapered roller bearing assemblies of the same size are fully interchangeable. These features facilitate smooth installation, removal and maintenance inspections.
Compensation for angular deviation
Single row tapered roller bearings have limited suitability for misalignment compensation. The permissible misalignment between the inner and outer rings depends on the bearing size, internal bearing design, clearance fit, and the effects of forces and moments. Misalignment can cause unwanted movement of the rolling elements and create additional stress in the bearing, reducing its service life.
Temperature
The permissible operating temperature of the bearing is limited by the cage material, the dimensional stability of the bearing components (ball rings and rolling elements) and the lubrication. Plain chrome steel single row tapered roller bearings are available by default at a constant temperature of 120°C or at intermittent temperatures up to 150°C. Above these temperatures, the load carrying capacity of chrome steels will decrease. Through special heat treatment process and adding high temperature grease, we can also customize high temperature resistant single row tapered roller bearings.
