Heavy load transporters present big technical challenges. Each single axle is steered by an IMO Slew Drive requiring the maximum axial, radial and tilting moment capacity. The WD-H 0300 with steering torques of 19914,12 ft-lb is an excellent solution.

In May 2004 the world record for the heaviest load moved on wheels was claimed with this Self Propelled Modular Trailer (SPMT). The trailer was equipped with a total of 470 axle lines and 1880 wheels.

The patented IMO-Slew drives, used as steering gear, took their share in reaching the world record.

Side loader with the steering gears of the WD-L 0223 and WD-L 0419 series; the high operating time requires the use of bronze worm gears.