GreenGearTrasmissioni
Application sectors
Iron and steel
The iron and steel field requires components that withstand extreme stresses and demanding environmental conditions. GGT designs and manufactures robust, tailor-made slipper spindles, gear spindles, couplings and universal spindles that ensure the transmission of high torque with precision and reliability. Thanks to internal lubrication solutions and sealed systems, we reduce maintenance and ensure continuous operation. The experience gained in mill plants all over the world allows us to offer products that improve plant efficiency and safety.
Mining
Mining plants operate in heavy duty environments with sudden stresses and a high level of dust. GGT universal spindles and couplings for the mining sector are designed to withstand impacts and vibrations, to bear high loads and to compensate for misalignments. Our range includes solutions fitted with overload protection systems and corrosion-resistant materials, ideal for crushers, conveyor belts and excavating machinery. Custom design ensures adaptability to any configuration and reduces plant downtime.
Waste treatment
Waste treatment requires reliable transmissions able to handle variable loads and abrasive conditions. GGT offers universal spindles and couplings designed for this sector, with reinforced structures and special coatings that withstand dust and aggressive substances. Our couplings can incorporate torque limiting devices to protect shredders and sorting plants, ensuring continuity of service and lower maintenance costs.
Power generation
Power generation applications require high-speed couplings able to transmit high torque with precision. GGT manufactures balanced special couplings that tolerate angular, radial and axial misalignments. The use of high-performance materials and secure fastening systems ensures a long lifetime, reduced vibration and ease of assembly. These solutions are ideal for turbines, generators and other rotating machines.
Cement plants
In cement plants, transmissions must withstand impacts, high temperatures and abrasive dust. GGT heavy-duty couplings and universal spindles ensure very high torque, tolerate large misalignments and resist wear thanks to heat-treated materials and dynamic balancing. We offer customised solutions for rotary kilns, crushers and mills that reduce downtime and ensure production continuity.
Transport
In the field of industrial and marine transport, transmissions must be safe and flexible. For marine applications we offer special couplings, with a nitro-oxidation treatment that resists corrosion and salt air, able to reduce vibration and noise for smoother running. Dedicated solutions are also available for railway vehicles, pumps and handling systems.
Tunnel Boring Machines (TBM)
Full-face mechanical boring machines, also known as TBMs (Tunnel Boring Machines), require transmissions that distribute the torque over several motors and protect the cutter head. GGT supplies safety couplings which, in the event of an overload, quickly disengage the transmission, preventing damage and allowing rapid re-engagement. Their robust structure and high torque capacity ensure reliability even in the most heavy duty applications.
Lifting
For cranes, hoists and other lifting equipment, GGT offers drum couplings that safely connect the gear box to the winding drum. These couplings compensate for misalignments caused by structural bending and withstand high loads, ensuring a long lifetime and reducing wear on mechanical components. The integration of simple wear indicators makes preventive maintenance easier.
Sugar mills
In the sugar and food industries it is essential to use corrosion-resistant stainless steel components. GGT offers couplings and universal spindles made of food-grade certified stainless steel, which operate even at pronounced working angles and ensure hygiene and a long lifetime. Thanks to the quality of the materials and the possibility of customisation, these products are ideal for centrifuges, refiners and conveyors in the sugar industry.
Paper mills
Paper mills need transmissions that coordinate numerous rolls throughout the production process. GGT universal spindles for the paper sector are sized to optimise bearing life and reduce vibration, and can be equipped with composite material tubes to increase speed and reduce weight. Reliability and simplified maintenance improve the efficiency of complex plants such as those used for paper production.

