RU-STEEL

RU-STEEL Italia S.R.L. is a medium company specialized in the field of the transmission couplings, from its first times (1958), the company is grown, step by step, increasing their capacities together in designing and manufacturing transmission couplings.

Since the first coupling produced, RU-STEEL’s philosophy has been designing and manufacturing a complete range of transmission couplings (from Nm 3 to 300.000, including “elastic couplings”, “self-lubricating coupling”, “flexible couplings”, “super elastic coupling”) in order to meet all customer’s requests.
 

TYPES OF RU-STEEL COUPLINGS

1) ELASTIC COUPLING - The RU-STEEL elastic coupling is composed with two equal gear rings, whose teeth engage themselves respectively with interposition of high resistance resilient blocks, which work only by compression. The use of RU-STEEL coupling assures the relief of incidental little misalignments between the connected shafts, which may depend, for instance, on unavoidable mistakes in the assembly, on thermic expansion, on elasticity of supporting structures, on ground settling, or on other causes. Furthermore the said coupling cushions the transmission of axial thrusts between the two connected shafts, because of its structural characteristics. G250 cast iron execution with 80Sh oil-resistant rubber plugs. It offers an elastic transmission by absorbing any shocks or vibrations, available in various lengths and sizes. It can work from -30 °C to + 120 °C.

2)   SELF-LUBRICATING GEAR COUPLINGS - The coupling of the “GD” set has got the main characteristic in the gears made by elements easily changeable in very strong resistance and self-lubricating material, while it intensifies the softness of the transmission, also avoids a further lubrication. The mentioned elements intersect each other into bores made half on the outer annulus gear and half on the inner hub. In that way the two edges, the inside of the annulus gear and the outside of the hub, can be compared to cogged surfaces and the driving elements, placed between the two constant-mesh gears, work as solid lubricating. Furthermore, the gear coupling of the “GD” set owns the capacity of working in both directions of rotation and with reversible of rotation and allows vertical and blind assembly. Execution in three pieces, completely metal in C 45 UNI EN ISO 10083/1/93, with cylinders in Teflon or bronze. These materials called "self-lubricating" allow axial sliding during the transmission of power. 

3)  FLOATING TEETH COUPLING (ZEUS) - RU-STEEL couplings with floating teeth type “ZEUS” are designed and manufactured to join two rotating shafts by transmitting a torque in a torsionally rigid way. They are totally manufactured in carbon steel “C 45”, they are composed by some hubs, produced with a “SPHERIC” toothing and by flanged coupling sleeves with a “CYLINDRICAL” toothing. The torque is transmitted by the mutual engagement of the toothing’s junction of the flanges through some gauged bolts. Full steel execution in C 45 UNI EN ISO 10083/1/93. High transmission torques with small dimensions. 

4) RIGID COUPLINGS - Execution in cast iron G250 UNI ISO 185. Useful for connecting particularly long shafts of the same diameter, both with and without key. Completely rigid transmission.

5) FLEXIBLE ALL STEEL COUPLINGS - Full steel execution in C 45 UNI EN ISO 10083/1/93, with reinforced lamellar packs in AISI 304 10083/1/97 stainless steel, flexible but torsionally rigid, without spacer, ATEX certified.