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Optimum weight distribution

06 December 2018

Torsion Control Products (TCP) has developed a customised coupling, which combines shaft bearings and coupling in a single assembly, for a tractor manufacturer.

The agricultural machinery manufacturer and long-time customer of Torsion Control Products wanted to develop a new tractor to meet the needs of the modern farmer. A key part was changing from having the transmission directly mounted onto the engine to having it remotely mounted in order to improve the weight distribution. A remote mount configuration requires a drive shaft to transmit torque between the transmission and engine. In order to accommodate this change, the customer needed a completely new type of coupling that could support the drive shaft while tuning the system and achieving the necessary performance.

The engineers of the American coupling specialist created a custom coupling configuration that provided shaft support and a coupling in one assembly. This coupling solution minimised costs by eliminating the need for a bearing housing while meeting the technical requirements of the application. The coupling is also short, which allows for a small deflection angle of the cardan shaft.

These products attenuate torsional vibration, isolate resonance, protect against overload and shock, reduce noise, improve the service life of bearings and gears, and increase system durability. The all-steel construction of the spring couplings is space-efficient and ensures a long service life, while their performance remains consistent throughout the products’ lifespan. Ambient temperature has virtually no impact on the performance or durability of the couplings. They can be used in both lubricated and non-lubricated environments and continue to operate and attenuate drivetrain vibration in even the roughest applications.

With their Smart Damping system, the spring couplings can be tuned to supply damping only when needed and pure isolation when damping is detrimental. This reduces torsional spikes at startup, shutdown and transient events, improving durability and coupling life.  

The range of spring couplings comprises various versions and covers a torque range from 27 to 27,000 Nm. In addition to agricultural vehicles, the couplings are used in gearboxes, hydrostatic pump drives, power shifts and hybrid transmissions in construction machinery and industrial plants.

 
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