Tigercat skidders deliver wood to roadside at the lowest cost in a variety of terrain conditions, tree sizes and species. Build quality, durability and operator comfort is unmatched.
Tigercat's unique skidder drive system combines hydrostatics with electronic control technology, resulting in unparalleled productivity and efficiency. Some of the benefits of Tigercat's hydrostatic drive system include:
No gear shifting
The skidder operator commands infinitely variable speed control from zero to maximum simply by depressing the drive pedal. The operator does not have to continually shift to maintain the optimal gear for the terrain and load. Operator fatigue is significantly reduced. (During an average work shift, the operator of a conventional skidder shifts gears as many as 1500 times!)
The wheels will maintain the speed commanded by the drive pedal, regardless of the traction or pulling torque required. When maximum horsepower is reached, speed reduction occurs automatically. Smooth and continuous traction allows Tigercat skidders to operate with minimal wheel spin. The result is reduced site disturbance, longer tire life, less driveline stress and improved performance in soft or steep terrain.
Automatic variable engine speed maximizes fuel efficiency, yet full tractive effort is always available regardless of engine speed. That means there is no need to sacrifice performance or productivity for higher efficiency and better fuel economy.
Because skidder travel ceases as the drive pedal is released, Tigercat skidders rarely rely on the secondary braking system and brake service is seldom required. The operator can maintain excellent control of the skidder on slopes.
EHSTM (efficient high speed drive) improves performance and efficiency. 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 sophisticated computer logic that takes 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 or when loaded on flat terrain -- all of the pump flow is directed to one motor for higher travel speeds.
In addition to the standard drive system, EHS is currently available on the the 610, 615, 620 and 630 series skidders.
With TurnaroundTM, forward and reverse have become meaningless terminologies. Thanks to Tigercat's advanced hydrostatic drive technology, the operator can drive comfortably with the full speed range available either blade-forward or grapple-forward. The operator has control of all machine functions in either seating position.