A trencher's job is obviously to dig a trench. How the machine gets that job done can happen in two ways: with a mechanical or a hydrostatic drive. In order to figure out which type of drive system is ...

Gearmatic has added a new line of hydrostatic track drives to the company’s product mix, with maximum torque output ratings from 12,539 to 162,264 lb-ft. (17,000 to 220,000 Nm). The TD Series offers a ...

Doosan Construction Equipment literature makes the point that “while Doosan is a relatively young brand in the North American construction-equipment market, the organization has a heritage in ...

It's still cheaper to trench long runs where there's not a lot of finished surface to repair, and the economy is forcing utilities to make that call rather than over-using directional boring. Ditch ...

The dozer PR 764 on display at MINExpo is the largest of the current Liebherr product line. The machine is powered by a Liebherr D 9508 V-8 engine developing 422 HP (310 kW). The engine is ...

Through the years, tractor manufacturers kept expanding the number of forward speeds for farm tractors to enable the farmer to select a more optimum speed for the operation being performed. By the mid ...

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 ...

The flow state of oil film in the hydrostatic lead screw directly affects the transmission performance of the screw pair. The static and dynamic characteristics of a new type of double driven ...