Loading Technology

PROMStahl specialises in the design, manufacture, installation and service of loading dock equipment including – hydraulic dock levellers, mechanical dock levellers, dock shelters, dock houses, industrial doors and a wide range of loading bay accessories. Thanks to many years of experience in the loading technology industry and precise knowledge of the needs, we can guarantee the best level of service to our clients.


Make safety your no 1 priority. Thanks to our sophisticated accessories your loading and unloading procedures will be improved with respect to safety, reliability, and efficiency. Optimize your material handling processes by using PROMStahl accessories.

Sectional door

Industrial gates are the elements necessary to ensure the free flow of goods in the loading process. Whether aluminum sectional doors or ISO doors - we offer the best solutions for every company.
Type PTU

Hydraulic dock leveller with segmented telescopic lip

PROMStahl’s new product, the PTU, is a stationary electro-hydraulic dock leveller with a segmented telescopic lip. It represents the optimal solution for loading and unloading different types of vehicles like for example lorries and vans. This versatility leads to enormous cost savings.


The most important feature of this type of leveller is its segmented (3-part) telescopic lip. Depending on the type of vehicle docked (lorry or van) the operator chooses the related mode of operation on the control unit. For vans, only the 1200 mm segment in the middle of the telescopic lip is extended. In this case the leveller’s load capacity is 20 kN. Thanks to the PTU’s special design, the weight on the van is hydraulically reduced to about 100 kg.

More informations

For loading and unloading standard trucks, all three segments of the telescopic lip are automatically positioned on the lorry bed with their total width of 1.950 mm. In that case, the load capacity of the dock leveller is increased to 60 kN. The PTU is operated electric-hydraulically at the push of a button; after exact positioning of the lip on the lorry bed, it follows the height variations of the vehicle being loaded or unloaded (automatic floating position).


The PROMStahl PTU dock leveller meets all requirements of the European standard EN 1398.

Technical drawing

Dock levellerLE = 500LE = 1.000


NL = Nominal length, NW = Nominal width, LE = Lip extension, LH = Leveller height, A = Level equalisation above dock, B = Level equalisation below dock. Load capacity for vans: 20 kN; load capacity for lorries: 60 kN. Other load capacities and sizes are available on request.

Pit drawings

Pliki do uzupełnienia

Pit dimensioning foms

pliki do uzupełnienia