Outer ring anti-napping side roller support bearing and eighteen-high mill thereof

Abstract

The invention relates to an outer ring anti-napping side roller support bearing and an eighteen-high mill thereof. The outer ring anti-napping side roller support bearing comprises an inner ring shaft, a support outer ring and a retainer, wherein the retainer is arranged between the inner wall surface of the support outer ring and the outer wall surface of the inner ring shaft; a first radial clearance M is formed between the outer ring surface of the retainer and the inner wall surface of the support outer ring; a plurality of pockets are formed in the retainer, pin rollers are respectively installed in the pockets, and notches are formed in the pockets in the outer surface of the retainer; second radial clearances N are formed between the pin rollers and the notches; the first radial clearance M is less than the second radial clearance N; and a friction contact surface is formed on the outer ring surface of the retainer. The clearance between the retainer and the outer ring is adjusted, so that the support outer ring can make contact with a part of the friction contact surface of the retainer when the support outer ring rotates during operation, the retainer is directly driven torotate by the support outer ring, the drag resistance of the retainer to each pin roller is reduced, and the operating resistance of the whole bearing is reduced.

Description

technical field [0001] The invention relates to an outer ring anti-snabbing side roll support bearing and an 18-high rolling mill thereof. Background technique [0002] In an eighteen-high rolling mill, it includes backup rolls, intermediate rolls, work rolls, and side rolls. Each side roll is matched with two sets of side roll support bearings to roll and cooperate with it to support the side rolls. [0003] When the side roll support bearing is working, its outer ring fits the side roll and rotates. There will be such a problem when it works for a long time. If the running resistance of the side roll support bearing is relatively large, sliding friction will occur between the outer ring and the side roll. Friction roughens the surface of the outer ring, which affects the surface of the side rolls, which in turn affect the work rolls, which ultimately affect the surface of the steel plate to be rolled. [0004] The analysis of the side roller support bearing shows that whe...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: to overcome the deficiencies of the prior art, provide an outer ring anti-snap side roll support bearing and its 18-high rolling mill, and solve the problem that the outer ring of the side roll support bearing is easy to pick due to high running resistance in the past

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