Tapered roller bearings are separable bearings, and both the inner and outer rings of the bearing have tapered raceways. This type of bearing is divided into different structural types such as single-row, double-row and four-row tapered roller bearings according to the number of rows of rollers installed. Single row tapered roller bearings can withstand radial loads and axial loads in one direction.Tapered roller bearings mainly bear the combined radial and axial loads mainly in the radial direction. The bearing capacity depends on the raceway angle of the outer ring. The larger the angle, the higher the bearing capacity. The larger the load capacity. This type of bearing is a separable bearing, which is divided into single-row, double-row and four-row tapered roller bearings according to 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 the user's requirements when the product leaves the factory, and does not need to be adjusted by the user. Tapered roller bearings have tapered inner and outer raceways with tapered rollers arranged in between. The projected lines of all conical surfaces meet at the same point on the bearing axis. This design makes tapered roller bearings particularly suitable for combined (radial and axial) loads. The axial load capacity of the bearing is mostly determined by the contact angle α; the larger the α angle, the higher the axial load capacity. The size of the angle is represented by the calculation coefficient e; the larger the value of e, the larger the contact angle, and the greater the applicability of the bearing to bear the axial load. Tapered roller bearings are usually separable, that is, the tapered inner ring assembly composed of the inner ring with the roller and cage assembly can be installed separately from the tapered outer ring (outer ring). Tapered roller bearings are widely used in automobiles, rolling mills, mining, metallurgy, plastic machinery and other industries.Single row tapered roller bearings: Inner diameter size range: 20mm~1270mm Outer diameter size range: 40mm~1465mm Width size range: 15mm~240mm Double row tapered roller bearings: Inner diameter size range: 38mm~1560mm Outer diameter size range: 70mm~1800mm Width size range: 50mm~460mm Four row tapered roller bearings: Inner diameter size range: 130mm~1600mm Outer diameter size range: 200mm~2000mm Width size range: 150mm~1150mm