WIRTGEN HT08 pick holder

Reinforced toolholder system for lower operating costs

With HT08 toolholder systems, the toolholder is welded to the milling drum. They are preferred on milling drums with small cross-section diameters or various cutting wheels. The ideal shape and material distribution enable high component strength and a longer service life.

The ideal shape and material distribution enable high component strength and a 75% longer service life..

• Wear path (see dimension x):
  • HT01 = 0.4 in (10 mm)
  • HT08 = 0.7 in (17,5 mm)

The revised interface geometry between the toolholder and the milling drum assures proper re-positioning when the toolholder needs to be replaced.

• Length of the positioning cylinder (see dimension z):
  • HT01 = 0.4 in (10 mm)
  • HT08 = 0.7 in (17,5 mm)
• Diameter of the positioning cylinder:
  • HT01 = 0.3 in (7.5 mm)
  • HT08 = 0.4 in (10 mm)

The improved geometry of the HT08 toolholder permits smaller milled recesses for the toolholder. Along with the low mechanical processing effort, this especially benefits the milling drum wall thickness in the area of the square-profile ring.

• HT08 (left)
• conventional, e. g., HT01 (right)

HT08 is designed for replacement of the round shaft pick using an automatic pick ejector. Under normal field conditions, this results in significantly reduced downtime.

Improved access to all toolholders on the milling drum, simplifies replacement of the round shaft pick.

• HT08 (left)
• conventional, e. g., HT01 (right)

Intelligent positioning of the toolholder in the area of the square-profile ring significantly reduces square-profile ring wear on the milling drum when milling tight radii.