Basic Definition:

Tapered roller bearings are separate bearings, and 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 a single direction. When the bearing is subjected to a radial load, an axial component will be generated, so that another bearing that can withstand the axial force in the opposite direction is needed to balance.

Classification:
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 (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.

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%.

Before-sales 

1>.Offer bearing related consultation about technology and application;
2>.Help customers about bearing choice, clearance configuration, products' life and reliability analysis;
3>.Offer highly cost-effective and complete solution program according to site conditions;
4>.Offer localized program on introduced equipment to save running cost
5>.Design and develop non-standard bearing to support customers' technology innovation

 After-sales Service 

1>.Offer training about bearing installation and maintenance;

2>.Offer guidance about bearing installation, adjustment and testing at site;
3>.Help customers with trouble diagnosis and failure analysis;
4>.Visit customers regularly and feedback their rational suggestions and requirements to company.

We also provide bearings as follows:

 1.How many is the MOQ of your company?
Our company MOQ is 1pcs.
2.Could you accept OEM and customize?
YES, OEM is accepted and we can customize for you according to sample or drawing. 
3.How about the corner?
In stocks,some are white ,and some are black.
But we can process the white corner to black,also black to white.
4.Do you have stocks?
YES, we have most of the bearings showing on alibaba in stock,especialy big bearings.
5.Do you have only big bearings?
We have big,medium and small bearings in stock.But large bearing is the advantage
of our products compared with other companies.