The metals industry is a vital driver of the global economy, and its close ties with other industrial sectors make it indispensable. We offer a complete product portfolio of high-performance, customer-oriented bearings covering all metallurgical equipment and rolling mill technologies. Our application-specific bearing designs, optimized combinations of bearings, materials, and seals, are specifically tailored for applications with complex operating conditions and highly variable running conditions.
The converter is used to refine molten iron into steel. A fully loaded converter vessel can weigh up to 2,000 tons.The converter vessel is supported in trunnions by long-life sliding bearings, which are installed within the converter shell and have a tilting casting function.
Under enormous mass and high impact loads, the tilting motion of the converter is typically performed at low speeds. Therefore, the bearings must have extremely high static load capacity while also compensating for misalignment and deformation in the structure. For this operating condition, high-strength self-aligning roller bearings with outer diameters up to 1,750 mm have been developed. The main gears in the gearbox are typically supported by deep groove ball bearings or cylindrical roller bearings; in such applications, bearing diameters exceeding 2,000 mm are not uncommon.
We provide bearing solutions perfectly suited to the operating conditions of continuous casting equipment, including: machined needle roller bearings, self-aligning roller bearings, cylindrical roller bearings (open or sealed), bearing housings with cooling water circulation, split self-aligning roller bearings and cylindrical roller bearings for hard-to-access mounting locations, and full complement cylindrical roller bearings.
Hot rolling is carried out at temperatures above the material’s recrystallization temperature. Depending on the product type, it can be categorized into: plate, hot-rolled strip, section, bar, and wire rod mills.
By adjusting the angle of the mill bearing housing (bearing box), the following can be used in radial supports:
Four-row tapered roller bearings
Multi-row cylindrical roller bearings
The design of radial bearings depends on the specific application conditions:
Angular contact ball bearings: suitable for high-speed, low-axial-load rolls
Double-row tapered roller bearings and thrust self-aligning roller bearings: suitable for bearing sections subjected to large axial loads.
In cold rolling, strip steel is typically formed without heating.
Compared to hot rolling, cold rolling offers:
Higher dimensional accuracy
Superior surface quality
Smaller sheet thickness
Four-row cylindrical roller bearings can meet extremely high precision requirements, performing exceptionally well even in high-speed aluminum rolling mills.
In multi-roll mills used for difficult-to-roll materials, cylindrical roller bearings are used as support roll bearing systems, ensuring uniform sheet thickness and stable surface quality even under extremely high load conditions.
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