Bearing

Abstract

The invention relates to a bearing, which comprises outer rings, inner rings, cages, steel balls, a separation ring and a bushing, wherein the two inner rings and the two outer rings are supported bythe cages, the cross section of the separation ring is rectangular, the cavity of the separation ring is filled with bearing oil, and the outer wall of the separation ring is provided with micro-holes. According to the present invention, when the bearing bears two-way axial force, the two rows of the rolling bodies steel balls can simultaneously bear the force, such that the axial load bearing ability of the bearing is high, is twice the axial load bearing ability of the four-point contact ball bearing, and is higher than the axial load bearing ability of the double row angular contact bearing; and the bearing can work under the high speed heavy load, is convenient to install and disassemble, has long service life, can be conveniently used in the transformation and application of rolling mills, and is the ideal rolling mill roller double row ball thrust bearing.

Description

technical field [0001] The invention belongs to the field of rolling mills for rolling metal strips, and relates to a rolling bearing for rolling mills, in particular to a bearing. Background technique [0002] At this stage, rolling bearings of rolling mill rolls have replaced Bakelite supports, which has greatly improved the rolling speed and precision. However, there is still a big problem after rolling bearings are used in rolling mills, that is, there is no thrust bearing for rolling rolls. A good structural form, such as: double row angular contact ball bearings, this type of bearing has two rows of rolling elements with a large width, suitable for working under high-speed and medium axial load conditions, because only one row can withstand axial force Force, so its ability to bear axial load is small. Another example is double-row tapered roller bearings. This type of bearing has a large axial load, but there are many shortcomings in use. ①The limit speed is low and ...

AI Technical Summary

Problems solved by technology

[0002] At this stage, the rolling bearings of the rolling mill rolls have replaced the bakelite support, which has greatly improved the rolling speed and precision. However, there is still a big problem after the rolls use rolling bearings, that is, the thrust bearings of the rolls have not yet been compared. A good structural form, such as: double row angular contact ball bearings, this type of bearing has two rows of rolling elements with a large width, suitable for working under high-speed and medium axial load conditions, because only one row can withstand axial force Force, so its ability to bear axial load is small

Another example is double-row tapered roller bearings. This type of bearing has a large axial load, but there are many disadvantages in use. ①The limit speed is low and cannot be suitable for high-speed rolling; ②The large end surface of the roller and the middle rib are sliding friction , when the instantaneous axial force is very large, the bearing is very prone to burns; ③The width of this type of bearing is large, occupying a large space in the bearing box, which increases the volume of the bearing box; ④This type of bearing can bear both radial force and When bearing the axial force, since the inner ring cannot fit tightly with the diameter of the roll, the phenomenon of shaft holding and burning is easy to occur during rolling, which is the deficiency of the thrust bearings used in existing rolling mills

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