SPECIAL BEARINGS FOR IRON AND STEEL INDUSTRY CUSCINETTI SPECIALI PER L’INDUSTRIA SIDERURGICA

A Worldwide organization Un’organizzazione globale UNITEC is a leading company in the design and manufacturing of special bearings for industrial applications and precision cylindrical roller bearings for machine tools and general industry. UNITEC bearings can be used in each stage of the iron and steel production process, i.e. from the UNITEC è leader nella progettazione e costruzione di cuscinetti speciali per il settore industriale e produce cuscinetti di precisione a rulli cilindrici per macchine utensili. Per quanto riguarda il processo produttivo dell’industria siderurgica, UNITEC è presente...

most industrial sectors worldwide. Other companies belonging to Mondial Group are: ITM-UNITEC, a company that distributes the wide range of UNITEC products on German market with a focus on bearings for industrial applications like steel and metal industry, paper industry, screw extruders and for various application fields. TMT a company specialized in development and manufacture of linear systems with head office in Milan. unitcc ENGINEERED BEARINGS \J UNITEC is represented globally by a distributors who L^re able to provide customers with a comprehensive service. UNITEC belongs to Mondial Group, whose...

UNITEC production capability Capacità produttiva UNITEC Located near Piacenza at the crossroads of the major arteries that connect Italy with the rest of Europe, UNITEC production plant extends over an area of 30,000 Sq m of which 13,500 are covered. The production plant is organized in two main areas: precision cylindrical roller bearings and special bearing for the industry. The plant is equipped with automated processes and the most recent machine tool technology. At each stage of the production, specialized personnel perform on-site quality controls to ensure that UNITEC products conform...

UNITEC production capacity ]sJC> Minimum bore diameter: 8 - 10 mm; Maximum outer diameter: 800 mm; Precision: from P0 to P4, UP; Material for rings: 100Cr6 and 100CrMo7 through hardening steel, 18NiCrMo5 case hardening steel, stainless steel and other steels for special applications; Material for cage: bronze, ergal, aluminum, polyamides, stainless steel or other suitable for special applications. Capacita produttiva UNITEC • Foro minimo: 8 - 10 mm; • Diametro esterno max: 800 mm; • Precisione: da P0 a P4, UP; • Materiale per anelli: Acciaio tutta tempra 100Cr6, 100CrMo7; Acciaio da cementazione...

UNITEC for steel Industry UNITEC per la siderurgia Continuous casting machines Self-aligning bearings, page 10 Colata continua Cuscinetti autoallineanti, pagina 10 Raw material Materie prime Continuous casting machines Colata continua Hot rolling Laminazione a caldo Hot rolled long products Multi-row cylindrical roller bearings, page 12 Laminatoi per prodotti piani e profili Cuscinetti a rulli cilindrici a più corone, pagina 12 8

Product examples for operating phase Esempi di prodotto per fase operativa Tension levellers, Straightening machine Combined straightening rollers with cam followers, page 18 Spianatrici per prodotti metallici piani Controrullo combinato con perno, pagina 18 Cold rolling Laminazione a freddo Sendzimir mills Chain conveyors Laminatoi Sendzimir Backing bearings, page 14 Rulli di contrasto, pagina 14 www.unitecbearings.com Radial rollers, page 20 Ruotino radiale, pagina 20

Continuous casting Continuous casting machines Colata continua The initial stage of steel manufacturing process is characterized by harsh conditions. All mechanical components, which are part of the continuous casting machines, are subjected to high temperatures, which reduce bearing service life. UNITEC can manufacture bearings with increased clearance and stabilized steel, which can work at high temperatures. For this reason two kind of bearings are suggested to be used: cylindrical roller bearings with aligning rings and split roller bearings. Lo stadio iniziale del processo di produzione...

Double row bearing with cage Cuscinetto a due file di rulli con gabbia Colata continua Split roller bearing Cuscinetto in due metà Self-aligning bearing Cuscinetto autoallineante Self-aligning bearing with extended inner ring Cuscinetto autoallineante con anello interno allungato

Hot rolled long products Laminazione prodotti piani e profili Multi-row cylindrical roller bearings are used in rolling mills for the manufacturing of flat, long and pipe products, and in operating conditions with heavy loads and low rotation speed. An additional thrust cage can be added and integrated, offering a complete solution in those applications with axial loads. To facilitate efficient lubrication, the multi-row cylindrical roller bearings can be supplied with lubrication holes, or with an annular groove and lubrication holes on the outer ring. UNITEC can manufacture bearings with increased...

Laminazione a caldo Four-row cylindrical bearing with cage Cuscinetto radiale a quattro file di rulli con gabbia Combined full complement bearing Cuscinetto combinato a pieno riempimento Outer ring with rollers and cage Anello esterno più rulli e gabbia Inner ring Anello interno

Sendzimir mills Laminatoi Sendzimir Backing bearings are roller bearings with a particularly thick outer ring. They are mounted on stationary support shafts, forming a cluster together with the work rolls. The forces from the work rolls are transmitted via the support shaft and a system of support saddles to the rolls or machine stands. The logarithmic profile of the rollers contact allows obtaining an optimum load distribution under all load conditions and even in case of bearing misalignment under load. UNITEC backing bearings are subjected to heat treatments that improve surface structure...

C design Esecuzione C UNITEC has developed a wide range of backing rollers for Sendzimir mills which are able to meet different requirements. Here below three standardized series: • Design A: 3-row bearings, rollers guided by a bronze cage and outer ring without ribs. • Design B: double row bearings with cage and ribs to guide the rollers. • Design C: single row full complement bearings, outer ring without ribs and inner ring with ribs to contain the rollers. UNITEC ha sviluppato diverse configurazioni di cuscinetti per laminatoi Sendzimir, ciascuna delle quali e in grado di soddisfare le particolari richieste...