Tapered Roller Bearings

definition:

The ability of a single row tapered roller bearing to withstand an axial load depends on the contact angle, ie the outer ring raceway angle, the greater the angle, the greater the axial load capacity. The largest number of tapered roller bearings are single row tapered roller bearings. In the front wheel hub of the car, a small-sized double-row tapered roller bearing is used. Four-row tapered roller bearings are used in heavy machinery such as large cold and hot rolling mills.

 

Structural features edit:

The type of tapered roller bearing is 30,000, and the tapered roller bearing is a separate bearing. Under normal circumstances, especially in the size range of GB/T307.1-94 "Rolling bearing radial bearing tolerance", the tapered roller bearing outer ring and the inner component are 100% interchangeably usable.

 

The angle of the outer ring and the outer race diameter have been standardized as the outer dimensions. Changes are not allowed at the time of design and manufacture. So that the outer ring of the tapered roller bearing and the inner component can be universally interchanged worldwide.

 

Tapered roller bearings are mainly used to withstand radial and axial combined loads based on radial loads. Compared with angular contact ball bearings, the bearing capacity is large and the limit speed is low. Tapered roller bearings are capable of withstanding axial loads in one direction and can limit axial displacement in one direction of the shaft or housing.

 

Category editing:

A single row tapered roller bearing has an outer ring, an inner ring assembly of the inner ring and a set of tapered rollers comprised of a basket cage. The outer ring can be separated from the inner ring assembly. According to the ISO tapered roller bearing external dimensions, any standard type of tapered roller bearing outer ring or inner ring assembly should be able to achieve internationality with the same type of outer ring or inner ring assembly. exchange. That is, the outer ring of the same model must meet the requirements of ISO492 (GB307) in addition to the external dimensions and tolerances. The taper angle of the inner ring assembly and the diameter of the component cone must also comply with the relevant provisions of the interchange.

 

Generally, the single-row tapered roller bearing outer ring raceway has a cone angle of 10 ° ~ 19 °, which can simultaneously bear the combined effect of axial load and radial load. The larger the cone angle, the greater the ability to withstand axial loads. Large cone angle bearing, rear code plus B, cone angle between 25 ° ~ 29 °, it can withstand large axial loads. In addition, single row tapered roller bearings can adjust the clearance during installation.

 

The outer ring (or inner ring) of the double row tapered roller bearing is a unitary body. The inner rings of the two inner rings (or outer rings) are similar, and the spacers are arranged in the middle. The clearance is adjusted by the thickness of the spacers. The thickness of the spacers can also be used to adjust the pre-interference of the double-row tapered roller bearings.

 

Four-row tapered roller bearings, the performance of this type of bearing is basically the same as that of double-row tapered roller bearings, but the radial load is larger than that of double-row tapered roller bearings, and the limit speed is slightly lower, mainly used for heavy machinery, such as Rolling mills, etc.

 

Multi-sealed double and four-row tapered roller bearings, ZWZ offers long-life, multi-sealed double and four-row tapered roller bearings. Personalized new design of the bearing, changing the traditional design method of the fully sealed bearing, adopting a new sealing structure type combining sealing and dustproof, improving the sealing effect and improving the sealing performance. Multi-sealed double and four-row tapered roller bearings have a 20% to 40% increase in life compared to open-frame bearings; lubricant consumption is reduced by 80%.