Commonly used medium mill bearing equipment type

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Commonly used medium mill bearing equipment type

Source: China Bearing Network Time: 2013-11-21
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(1) Spherical Roller Bearings The equipment of the early rolling mill bearings on the rolling mill is different from the current one; at the same time, two sets of spherical roller bearings are used side by side on the same roll neck. This type of equipment is completely satisfactory. Production conditions; rolling speed up to 600 rpm. But with the advancement of speed; its defects are more and more outstanding: short bearing life, large cost, low precision of the product, severe wear of the roll neck, large axial roll of the roll.
(2), four-row cylindrical roller bearing + thrust bearing cylindrical roller bearing inner diameter and roller neck selection tight cooperation; accept radial force; with large load capacity, high limit speed, high precision, inner and outer rings can be separated and can be exchanged The processing is simple, the production cost is low, the device is easy to disassemble, and the thrust bearing receives the axial force; the detailed layout type can be selected according to the characteristics of the rolling mill.
Heavy-duty at low speed; with thrust roller bearing; with small axial clearance to accept thrust load. When rolling speed is high; with angular touch ball bearing; not only high speed limit; The gap can be strictly controlled to make the roll get tight axial guidance; and can accept the usual axial load force.
This type of bearing equipment not only has long bearing life; high reliability; it has many advantages such as high precision and easy handling of rolled products; so it is currently the most widely used; it is mostly used in wire rod mills, sheet mills, foil mills, double support rolls. Support rolls for rolling mill cold rolling mills and hot rolling mills.
(3) Four-row tapered roller bearing Tapered roller bearing can accept both radial force and axial force; no need to equip thrust bearing; therefore, the main machine becomes more compact. Tapered roller bearing inner diameter and roll neck are loose. Cooperation; installation and disassembly are very convenient; but sometimes due to loose cooperation, sliding creep; so the inner diameter is often processed with a spiral oil groove.
The current use of this type of equipment is still relatively extensive; such as four-roll hot rolling mill and cold rolling mill work rolls, blanking machines, steel beam rolling mills and other occasions.
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