The type code for taper roller bearings is 30000, and taper roller bearings are separate type bearings. Under normal circumstances, especially in GB/T307.1-94 "Rolling bearing centroid bearing tolerance" involved in the size range of tapered roller bearings between the outer ring and inner components is 100 percent can be used universally and interchangeably.

The Angle of the outer ring and the diameter of the outer raceway have been standardized with the external dimensions. Changes at design and manufacture are not allowed. So that the outer ring of tapered roller bearing and the inner assembly can be universally interchangeable worldwide.

Tapered roller bearings are mainly used to bear radial and axial combined load mainly by radial load. Compared with angular contact ball bearing, the bearing capacity is large, the limit speed is low. Tapered roller bearings can bear axial load in one direction and limit axial displacement of the shaft or housing in one direction。A single row tapered roller bearing has an outer ring, an inner ring assembly consisting of an inner ring and a set of tapered rollers enclosed by a basket cage. The outer ring can be separated from the inner ring assembly. According to the ISO tapered roller bearing dimensions, the outer ring or inner ring assembly of any standard type of tapered roller bearing should be internationally interchangeable with the outer ring or inner ring assembly of the same type. That is, the outer ring of the same model in addition to the external dimensions and tolerances to meet the requirements of ISO492 (GB307), the conical Angle of the inner ring assembly, the diameter of the assembly cone must also meet the relevant provisions of the exchange.

Usually, the taper Angle of the outer ring raceway of single row tapered roller bearing is between 10° and 19°, which can bear the joint action of axial load and radial load at the same time. The larger the cone Angle, the greater the ability to bear axial load. Bearing with large taper Angle, rear-mounted code plus B, taper Angle between 25° and 29°, it can withstand large axial load. In addition, single row tapered roller bearings can adjust the size of clearance during installation.

The outer ring (or inner ring) of double row tapered roller bearing is a whole. The small end faces of the two inner rings (or outer rings) are close, and there are diaphragms in the middle. The clearance is adjusted by the thickness of the diaphragms, and the thickness of the diaphragms can also be used to adjust the pre-interference of the double-row tapered roller bearings.

Four row tapered roller bearings, this kind of bearing performance and double row tapered roller bearings are basically the same, but than double row tapered roller bearings bear greater radial load, the limit speed is slightly lower, mainly used in heavy machinery.

Multi-seal double and four-row tapered roller bearings, ZWZ provides long-life, multi-seal double and four-row tapered roller bearings. The bearing CARRIES ON THE PERSONALIZED BRAND-NEW DESIGN, CHANGES THE fully SEALED BEARING TRADITIONAL DESIGN METHOD, ADOPTS THE SEALING AND DUSTPROOF COMBINATION NEW SEALING structure TYPE, IMPROVES THE sealing EFFECT, ENHANCES THE sealing PERFORMANCE. Compared with the open structure bearing, the life of multi-sealed double and four-row tapered roller bearings is increased by 20% ~ 40%; Lubricant consumption reduced by 80%.