Tapered roller bearings belong to separate type bearings, and both the inner and outer rings of the bearings have tapered raceways. This type of bearing is divided into different structural types based on the number of rows of installed rollers, such as single row, double row, and four row tapered roller bearings. Single row tapered roller bearings can withstand radial loads and axial loads in a single direction. When the bearing is subjected to radial load, an axial component will be generated, so another bearing that can withstand the opposite axial force is needed for balance.

Product Information

Tapered roller bearing refers to a radial thrust type rolling bearing with a tapered roller as the rolling element. There are two types: small cone angle and large cone angle. The small cone angle mainly bears combined radial and axial loads, mainly radial loads. It is often used in pairs and installed in reverse. The inner and outer races can be installed separately, and the radial and axial clearance can be adjusted during installation and use; The large cone angle mainly bears the combined axial and radial loads mainly composed of axial loads, and is generally not used separately to bear pure axial loads. It can be used as a pair configuration (with the same end installed relative to each other) to bear pure radial loads.

Product definition

The ability of a single row tapered roller bearing to withstand axial load depends on the contact angle, i.e. the angle of the outer ring raceway. The larger the angle, the greater the axial load capacity. The most commonly used tapered roller bearing is a single row tapered roller bearing. In the front wheel hub of a sedan, small-sized double row tapered roller bearings are used. Four row tapered roller bearings are used in heavy-duty machines such as large cold and hot rolling mills.

Structural characteristics

The type code of tapered roller bearing is 30000, and the tapered roller bearing is a separate type bearing. In general, especially within the size range mentioned in GB/T307.1-94 "Rolling Bearings - Radial Bearing Tolerances", the outer ring and inner components of tapered roller bearings can be interchangeable and used 100% universally.

The angle of the outer ring and the diameter of the outer raceway have been standardized and specified to be the same as the external dimensions. Changes are not allowed during design and manufacturing. To enable universal interchangeability between the outer ring and inner components of tapered roller bearings worldwide.

Tapered roller bearings are mainly used to withstand combined radial and axial loads, mainly radial loads. Compared with angular contact ball bearings, it has a larger load-bearing capacity and lower limit speed. Tapered roller bearings can withstand axial loads in one direction and limit axial displacement of the shaft or casing in one direction.

Product Application

Tapered roller bearings mainly bear radial and axial combined loads. The bearing capacity depends on the raceway angle of the outer ring, and the larger the angle, the greater the bearing capacity. This type of bearing belongs to the separated type and is divided into single row, double row, and four row tapered roller bearings based on the number of rows of rolling elements in the bearing. The clearance of single row tapered roller bearings needs to be adjusted by the user during installation; The clearance of double row and four row tapered roller bearings has been given according to user requirements when the product leaves the factory and does not require user adjustment.

Tapered roller bearings have tapered inner and outer raceways, with tapered rollers arranged between them. The projection lines of all conical surfaces converge at the same point on the bearing axis. This design makes tapered roller bearings particularly suitable for bearing composite (radial and axial) loads. The axial load capacity of bearings is mostly determined by the contact angle α Determined; α The larger the angle, the higher the axial load capacity. The angle size is represented by the calculation coefficient e; The larger the e-value, the greater the contact angle, and the greater the applicability of the bearing to withstand axial loads.

Tapered roller bearings are usually of the separated type, that is, the conical inner ring component composed of inner rings with roller and cage components can be installed separately from the conical outer ring (outer ring).

Tapered roller bearings are widely used in industries such as automobiles, rolling mills, mining, metallurgy, and plastic machinery.