| January 14, 2013
Hydrostatic Travel Drives
Hydrotrac GFT-N drives allow faster travel speeds, along with proven performance and reliability.
These drives are three-stage planetary gears with pre-arranged spur gear specifically designed for mining excavators and track-laying cranes. With output torques between 600 and 1300 kNm and a dual motor configuration, they allow for faster travel speeds than single motor drive configurations by taking advantage of the faster speed rating of the smaller motor. The drives can be integrated as a complete unit into the undercarriage frame, with the sprocket mounted to the output side transmitting the required torque to the track. The offset motor mount also allows increased ground clearance. The compact, space-saving planetary gear complies with operational strength requirements, including those specified in DIN 3990, ISO 6336, AGMA, GL and DNV, while also reflecting customary standard design regulations for proven performance and reliability. Hydraulic motors are integrated as flanged-on fixed or variable displacement units plugged into the gearbox. As a standard supply feature, the gearboxes come with one or two spring-loaded hydraulically released multiplate parking brakes attached on the input side. The parking brake torque suits the respective motor torque.
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