ROTARY UNIONS
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Rotary unions Giunti rotanti

ROTARY UNIONS: characteristics Rotating joints are mechanical devices used to transfer a heating or cooling, fluid or gas from a fixed piping to a rotating part, whether a rotating drum or cylinder, of an industrial application. The performance and efficiency of a rotating joint depend on the quality of the seals, that is the section of the mechanical device that joins the fixed part with the rotating part. The seal rings must be able to guarantee the correct passage of fluid or gas without any leaks. The rotation speed, the pressure and the type of fluid all contribute to wear the seal...

SERIE R ROTARY JOINTS FOR AIR AND VACUUM (high speedness) GIUNTI ROTANTI PER ARIA E VUOTO (alta velocita) The R series is the most widely used solution for transferring the working pressure to pneumatic clutches and expanding shafts. Suitable for use at high speed, they rotate on two ball bearings. Available in sizes ranging from1/8” to 1”. La serie R e la soluzione piu comune per trasferire la pressione di lavoro in frizioni pneumatiche e alberi espansibili. Adatto alle alte velocita, gira su due cuscinetti a sfera. Disponibili da 1/8” a 1” di grandezza. USE IMPIEGO Threaded G UNI 339/66...

SELF-SUPPORTING BALL BEARING ROTARY JOINTS (double bearings) GIUNTI ROTANTI AUTOSUPPORTATI SFERE (doppio cuscinetto) The U series is the most widely used version, supported by two ball bearings and available with graphite (for filtered air and water) or silicon carbide (for oil and water) seals. Available in one or two way versions and sizes ranging from 1/4” to 2” 1/2, with fixed or rotating siphon. Main features • Graphite seals vs stainless steel is used for air and water filtered at 20 micron at least. • For dirty water or hydraulic oil, silicon carbide seal vs silicon carbide...

UM SERIES SINGLE-FLOW JOINTS Fixed parts Parti fisse Rotating parts Parti rotanti UF SERIES DUAL-FLOW JOINTS (fixed siphon tube) SERIE UF GIUNTI DUE VIE (tubo sifone fisso) UR SERIES DUAL-FLOW JOINTS (freely rotating siphon tube) UT SERIES DUAL-FLOW JOINTS (rotating with sealing) SERIE UR GIUNTI DUE VIE (tubo sifone rotante libero) SERIE UT GIUNTI DUE VIE (rotazione con tenuta) L (wrench) L (chiave) Flow reversal allowed Inversione flussi ammessa

SELF-SUPPORTING GRAPHITE ROTATING JOINTS (double bearings) GIUNTI ROTANTI AUTOSUPPORTATI GRAFITE (doppio cuscinetto) The N series is supported by 2 carbon-graphite bearings, for use with steam, water and diathermic oils at temperatures of up to 316 °C. The treated carbon-graphite is suitable for spherical sealing; the seal is perfect and maintenance is quick and easy. Available in sizes ranging from 1/4” to 2”1/2. Main features • Self-support by means of two graphite bearings amply spaced out. • Seal ring is made of impregnated graphite and works in compression (the compression strength of...

Threaded rotor version Versione con rotore filettato NB SERIES SINGLE-FLOW JOINTS SERIE NB GIUNTI AD UNA VIA Ch (wrench flats) Ch (fresatura per chiave) NF SERIES DUAL-FLOW JOINTS (fixed siphon tube) SERIE NF GIUNTI DUE VIE (tubo sifone fisso) Threaded rotor version Versione con rotore filettato NR SERIES DUAL-FLOW JOINTS (rotating siphon tube) SERIE NR GIUNTI DUE VIE (tubo sifone rotante) Fixed parts Parti fisse Rotating parts Parti rotanti Type tipo

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