The cubic shape with integrated cooling fins permits a longer duty cycle,as the heat is dissipated more effectively,thus extending the service life of the lubricant.The surface coating simultaneously protects the jack against corrosion.
The housing material
The mechanical strength of the housing has been improved particularly at high temperature,through the use of spheroidal graphite iron instead of the former cast iron.This ensures greater reliability,even in tough service conditions.
Taper roller bearings on the worm shaft and heavy-duty ball bearings as the main thrust bearings make it possible to move higher loads,increase the safety reserve and extend the service life.
The trapezoidal screw(version N)is greased by radial lubrication holes on the worm wheel.The resultant lower friction and temperature extends the service life,particularly when operating with longer stroke lengths.