New EHS skidder drive
Published on: Wednesday 22nd May 2013
BRANTFORD ON, MAY 22, 2013 – Similar to the field-proven and revolutionary hydrostatic drive system that Tigercat initially developed and released in 1996 with the first 630 skidders, EHS consists of two variable displacement motors as inputs to the Tigercat transfer case. Front and rear output shafts are connected directly to the front and rear axles.
While the current electronically controlled hydrostatic drive system found in the D-series skidders performs exceptionally well, EHS is capable of providing the tractive effort of the deepest gear ratio offered in Tigercat’s standard transfer case as well as the top speed of the shallowest gear ratio offered in the standard transfer case.
This is accomplished with more sophisticated computer logic and the ability to take one of the drive motors offline when high tractive effort is not required. In this case, all pump flow is directed to one hydraulic motor, increasing both travel speed and motor efficiency.
When operating conditions demand high tractive effort, both hydrostatic motors are working. When tractive effort requirements are minimal — for instance, when traveling empty — all of the pump flow is directed to one motor for higher travel speeds.
Tigercat is offering EHS standard in the 610C and the new 615C and expects end users to see higher productivity and improved fuel efficiency in the majority of applications.
Tigercat Industries designs and manufactures premium quality forestry and off-road equipment with manufacturing facilities in Canada and worldwide distribution. The diverse product range includes complete full-tree and cut-to-length harvesting systems, a growing line of land clearing and vegetation management equipment and specialized off-road industrial and material handling machinery.