DOLL Fahrzeugbau AG

Long Timber Vehicles


The transport of long timber is one of the most demanding of all transportation tasks. Transporting log lengths of up to 22 m on forest tracks with steep gradients and lots of bends is a huge challenge. DOLL offers sophisticated transport solutions and an extensive product range. The basic components are the superstructure and the self-steering trailer. Besides the proven KOMPAKT and RATIO series there is the new steering system ratioplus. It combines the features of the DOLL self-steering trailer with the advantages of a forced-steering trailer.

The DOLL concept for the truck design consists of proven assemblies that can be flexibly adapted to the customers' requirements.

  • Additional structures for all common truck chassis and loading cranes
  • Design of the loading crane according to customer specifications
  • Quick change of the bolster on the trailer plate
  • Optional hydraulic or mechanical extension of bolsters

DOLL's core expertise in self-steering trailers is the hydraulic steering. It is offered in three variations.

  • DOLL KOMPAKT with 2-cylinder steering system and low weight
  • DOLL RATIO with 4-cylinder steering system for high drive stability in extremely rough terrain
  • DOLL ratioplus with 4-cylinder steering system with the proven featurs of the DOLL RATIO and the advantages of a forced-steering trailer.

The trailers are offered in different executions:

  • Two and three axle self-steering trailers
  • Inclined front and rear section for safe and quick loading and unloading

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