Angular contact tapered roller bearings are designed to accommodate combined simultaneously acting radial and axial loads. The bearing ability to accommodate the axial load is largely determined by the taper angle of the outer ring raceway, called the contact angle. When increasing the contact angle, the axial load capacity of the bearing increases with the corresponding decrease of the radial load capacity and permitted rotation speed. Even slight shaft misalignment relative to the housing is unacceptable when using angular contact tapered roller bearings.

Angular contact tapered roller bearings are produced in a single row accommodating only axial load in one direction, as well as double row and four-row accommodating axial load in both directions. It is possible to supply single row bearings matched in pairs and completed with intermediate rings to secure the necessary clearance. In the general engineering fields, the most common are single-row bearings, double row, and four-row bearings are usually used in heavy machinery. Angular contact tapered roller bearings have a split design, which makes their mounting easier.

Angular contact tapered roller bearings are produced with pressed steel cages. Large-size bearings are equipped with massive cages made of steel or brass and for special applications cages made of glass fiber reinforced polyamide can be produced.

As a rule radial spherical roller bearings have two rows of rollers with a common sphered raceway in the outer ring. They have higher radial load capacity compared to other types of bearings with equal dimensions and they are able to compensate for significant misalignment and shaft deflections (up to 3°). They can also accommodate the combined radial and axial load. However, it is not recommended to operate them under heavy axial loads, because only one row of rollers will work in this case. Radial spherical roller bearings are used in the supports of pumps, powerful fans, smoke exhausts, saw frames, gears, propeller shafts, rolling mills, and in the supports of other machines and mechanisms, which operate under heavy radial loads and inevitable misalignment of seats.

Bearings can be produced with both cylindrical and tapered bores in the inner rings. The latter is mounted on the tapered shaft neck or on an adapter or withdrawal sleeve. Radial spherical roller bearings are usually mounted on the long shafts subjected to significant deflection, or in the supports of detached housings. The bearings with adapter sleeves are mounted on smooth multi-supporting shafts. As a rule, bearing with the tapered bore as well as bearings with withdrawal sleeves are mounted on the terminal supports of the shaft or axis. The presence of a tapered bore in the bearings considerably facilitates their mounting and dismounting.

Lately radial spherical roller bearings in a sealed version with contact seals on both sides are more often used for heavy-duty operation; and usually seals come out slightly the dimensions of the bearing side surface, which requires some extra space in the bearing unit.

Radial spherical roller bearings have pressed steel, glass fiber reinforced polyamide, or machined brass cages.

Taper Roller Thrust Bearing

CAN Taper Roller Thrust bearings include rollers that have conical sections? These bearings are designed primarily to support axial loads at contact angles between 30˚ and 90˚. These bearings are suited for applications where extremely high thrust loads like in crane hooks, coal pulverizers, etc. These bearings can be supplied with a full complement of rollers.

Thrust Ball Bearing

The Thrust Ball bearings are used for high axial loads at low speeds. These cannot operate at high speed when centrifugal or radial force cannot be handled by the bearings. They can be located endwise in one direction only.

Due to various application possibilities and relatively low prices, deep groove ball bearings are the most common out of all the variety of rolling bearings. They have a simple design and the ability to operate at high speed and moderate load. When operating, they do not practically need maintenance. These bearings are able to accommodate both the radial loads and the axial loads in both directions.

Compared with other types of rolling bearings, deep groove ball bearings operate with minimal friction losses. The alignment of seats for these bearings shall be kept within such limits that the misalignment of the outer rings relative to the inner rings was slight, even with the increased bearing clearance. The bearings shall be mounted on hard double-seat shafts which deflection under the influence of the external forces does not cause excessive misalignment of the shaft axis relative to the mounting bore axis.

Deep groove ball bearings with protective metal shields or contact and contactless seals are widely distributed. They are used in the cases when due to the limited size or maintenance inconveniences, mounting of special sealing devices to protect the bearing from dirt or to keep the lubrication in is undesirable.

Deep groove ball bearings are usually fitted with pressed steel cages. The bearings with more durable and strong cages made of glass fiber reinforced polyamide, which provide higher speed, low noise, and less weight are produced recently. Bearings with the particular requirements, operating in special conditions, as well as large-size bearings, are produced with brass, aluminum alloys, and other materials cages.

Radial cylindrical roller bearings are intended to accommodate the radial loads. They have much greater radial load capacity compared to the deep groove ball bearings of equal dimensions, but they are inferior to them as per high-speed characteristics. Cylindrical roller bearings are very sensitive to the misalignment of inner rings relative to outer rings when tension concentration at the edges of rollers appears. To reduce this tension the modern roller bearings' contact geometry between roller and raceway has a special «logarithmic» profile.

Single row radial cylindrical roller bearings are produced in many structural modifications, the most common of which are: without flanges and with one flange on the inner ring, with one flange on the inner ring and flat thrust ring, without flanges and with one flange on the outer ring. If it is necessary to reduce the unit radial dimensions, single-row roller bearings can be supplied without inner or outer rings, in this case, the second raceway is formed directly on the shaft or in the housing of the unit. Double row and multi-row radial cylindrical roller bearings are produced for various special applications.

Radial cylindrical roller flanges ring. If it is necessary to provide extremely high radial load capacity, these bearings can be bearings are manufactured with cages made of glass fibre reinforced polyamide, pressed steel cages or machined cages of brass, bronze and aluminium alloys. Machined cages are usually centred on double produced without cages with the maximum number of rollers.