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Bearings for linear guides
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NSK brand bearings
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FAG brand bearings
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Customized bearings
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Mountain bike bearings
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Stainless steel bearings
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Bearings for robots and manipulators
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Oilfield bearings
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Automotive Bearings-Gearbox Bearings
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Ceramic bearings with silicon nitride balls
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Automotive Bearings - Clutch Release Bearings
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INA brand bearings
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Automotive Bearings-Wheel Bearings
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Electrically insulated bearings
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Bearings for wind power
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Bearings for UAVs
Bearings for metallurgical rolling mills
Roll bearings are another name for metallurgical rolling mill bearings. They are key components designed to support the mill rolls and keep them in the correct position in the stand. Roll bearings are mainly divided into plain bearings and rolling bearings, and must have the characteristics of low friction, high strength and moderate rigidity.
Description
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Product Description
Roll bearings are another name for metallurgical rolling mill bearings. They are key components designed to support the mill rolls and keep them in the correct position in the stand. Roll bearings are mainly divided into plain bearings and rolling bearings, and must have the characteristics of low friction, high strength and moderate rigidity. Under operating conditions, rolling roll bearings are subject to high specific loads, have limited radial dimensions, operate over a wide speed range and under high ambient temperature conditions. About 40% of damage is caused by insufficient lubrication. Rolling bearings are often designed as double-row spherical roller bearings or four-row tapered roller bearings and are used in strip rolling mills; Sliding bearings include types of semi-dry friction and liquid friction, and the latter, through the use of hydrodynamic, hydrostatic and hydrostatic-dynamic modes, can improve rolling accuracy.
Features of work
Roll bearings support the rotating rolls and are an important element of the working stand of a rolling mill. They have the following features:
(1) High operating loads and limited radial dimensions. During the rolling process, large torques and shock loads occur. Due to technological requirements, the overall dimensions of the roll bearing housing must be less than the minimum diameter of the roll barrel, therefore the dimensions of the rolling roll bearings are limited and the specific loads are high.
(2) Significant speed range. The rotation speeds of different rolling mills vary greatly, for example from 0.2 to 120 m/s, and during reverse rolling the bearings often change direction of rotation. Therefore, different types of bearings should be used for mills with different speeds.
(3) Severe operating conditions. During hot rolling, the ambient temperature is high, causing cooling water and scale to splash; During cold rolling, technological lubricants (emulsions, rolling oils) are used to lubricate and cool the rolls and rolled products, which can also enter the bearings. In this regard, increased demands are placed on the seals of rolling bearings.
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