Four-Row Tapered Roller Bearing for Rolling Mill Replace NSK 165kv2252
Model No.: 165KV2252
Basic Load Ratings
Abutment and Fillet Dimensins
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Four-row tapered roller bearings are one kind of roll neck bearings, their radial and axial loading capacity are high, can carry heavy axial loads in two directions, and their radial loading capacity is 3 times heavier than single-row tapered roller bearings, but limiting speed is lower.
Four-row tapered roller bearings are suitable for accommodating great radial forces and are most widely used in the roll neck areas of rolling mill equipment. Their inherent benefit is the ability to provide an application with maximum load ratings while at the same time working within a smaller space requirement. maximum capacity in minimum space, combining the inherent high-load, radial/thrust capacity and direct/indirect mounting variables of tapered roller bearings.
Tapered roller bearings are generally separable, i.e. the cone, consisting of the inner ring with roller and cage assembly, can be mounted separately from the cup . This type of bearings use conical rollers guided by a back-face rib on the cone. These bearings are capable of taking high radial loads and axial loads in one direction.
The projection lines of all the tapered surfaces meet at a common point on the bearing axis. Their design makes tapered roller bearings particularly suitable for the accommodation of combined (radial and axial) loads. The axial load carrying capacity of the bearings is largely determined by the contact angle a; the larger a, the higher the axial load carrying capacity. An indication of the angle size is given by the calculation factor e; the larger the value of e, the larger the contact angle and the greater the suitability of the bearing for carrying axial loads.
Taper roller bearings can be grouped as follows:
single row tapered roller bearings
paired single row tapered roller bearings
double row tapered roller bearings
four-row tapered roller bearings
Tapered roller bearing, also called cone roller bearing ,is produced with a cone shape roller which is guided by inner ring.
Tapered roller bearing mainly sustain radial and axial load. Bearing capacity depends on the Angle of the outer ring raceway, The greater the angle is the greater load capacity will be. Tapered roller bearing belongs to separated type bearing.
Depending on the difference of contact (alpha), it can be divided into small cone Angle, large cone Angle and taper Angle three patterns, the larger the contact Angle is, the greater axial load capacity will be.
Outer ring and inner components (inner ring, roller and cage components) can be separated, easy to install.
The ability that Single-row tapered roller bearing axial burden can bear depends on the contact Angle, that is the outer ring raceway Angle. Greater the angle is , Greater the axial load capacity will be. There are two types of tapered roller bearing, including single-row and double-row tapered roller bearings, in which the single-row bearings are mostly used. Small sizes of double-row tapered roller bearings are used in the car's front wheel hubs. Four-row tapered roller bearings are used in large cold, hot rolling mills, and other heavy machines.
Separate bearing is fairly easy to install, especially with the combination of inner ring and outer ring, and tapered roller bearing is completely in line with this feature, it not only install easily, but also can carry the axial and radial load, which can distribute the load, and also is the best way to reduce friction.
As the taper roller bearing can reduce friction, it is widely used in car, rolling mill, mining, metallurgy, plastics machinery and also other industries.
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Product Categories : Rolling Mill Bearings
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