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.

A single row tapered roller bearing has an outer ring, whose inner ring and a set of tapered rollers are enclosed by a basket shaped cage as an inner ring component. The outer ring can be separated from the inner ring component. According to the ISO tapered roller bearing outline dimension standard, any standard model of tapered roller bearing outer ring or inner ring component should be able to achieve international interchangeability with the same model of outer ring or inner ring component. In addition to complying with ISO492 (GB307) for external dimensions and tolerances of the same model of outer ring, the cone angle and cone diameter of inner ring components must also comply with relevant regulations for interchangeability.

Usually, the cone angle of the outer race of a single row tapered roller bearing is between 10 ° and 19 °, and it can withstand both axial and radial loads simultaneously. The larger the cone angle, the greater the ability to withstand axial loads. A bearing with a large cone angle, with a trailing code B and a cone angle between 25 ° and 29 °, can withstand large axial loads. In addition, the clearance of single row tapered roller bearings can be adjusted during installation.

The outer ring (or inner ring) of a double row tapered roller bearing is a whole. The small end faces of the two inner rings (or outer rings) are similar, with a spacer ring in the middle. The clearance is adjusted by the thickness of the spacer ring, or the pre interference of the double row tapered roller bearing can be adjusted by the thickness of the spacer ring.

Four row tapered roller bearings have the same performance as double row tapered roller bearings, but they bear a greater radial load and a slightly lower limit speed than double row tapered roller bearings. They are mainly used in heavy-duty machinery.

Multi sealed double and four row tapered roller bearings, ZWZ provides long life, multi sealed double and four row tapered roller bearings. Personalized and brand new design of bearings, changing the traditional design method of fully sealed bearings, adopting a new sealing structure that combines sealing and dust prevention, improving sealing effectiveness and sealing performance. Compared with open structure bearings, multi sealed double and four row tapered roller bearings have a 20% to 40% longer lifespan; Reduce lubricant consumption by 80%.

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