by Petra Lugner | Jun 05, 2018
The Pfaff-silberblau SHE-series worm gear screw jacks from Columbus McKinnon Engineered Products, Kissing, ensure reliable operation in the latest pavers of the global mechanical engineering company Linnhoff & Henne. Only two worm gear screw jacks are required to handle the forces of 400 kN produced during the mechanical laying of mastic asphalt. The screw jacks featuring self-locking, grease-lubricated trapezoidal screws can be positioned very precisely at speeds of 150 mm/min thanks to a high ratio (32:1) and a stroke of 0.5 mm per revolution. The pavers from Linnhoff & Henne thus enable large-scale paving on car parks, bridges, roads, footpaths, multi-storey car parks and halls.
Pavers are used for the mechanical laying of mastic asphalt. They compact the mix evenly over the entire paving width to produce a closed and level path. In order to be able to lift loads of up to 40 tonnes, Linnhoff & Henne was looking for suitable worm gear screw jacks and opted for the SHE series from Pfaff-silberblau due to the high load capacity, reliability and excellent mounting options. Thanks to the robust housing and case-hardened and ground worm-drive shaft, the SHE screw jack element reliably and durably withstands high loads.
A Pfaff-silberblau SHE worm gear screw jack with a stroke of 1300 mm is located on each side of the paver or chassis. The B configuration (screw-on-sided screw) ensures optimum load distribution and offers good mounting options. For example, the travelling nut can be easily integrated into the customer-supplied receptacle, whilst serving as the linear guide with optimal (tensile) loading direction. A flexible protection boot and the robust housing reliably protect the screws against the effects of weather and dirt ingress in the harsh conditions of asphalt laying.
Headquartered in Stadtoldendorf, Germany, Linnhoff & Henne develops and produces machinery for the transportation and laying of mastic asphalt. For laying asphalt and applying chippings in one operation, the pavers can also be designed with an integrated chipping spreader. The paving width can be determined by the number of variably replaceable paver bodies. Paving widths up to 14 m with chipping are possible with the Pfaff-silberblau worm gear screw jacks. For driving the machine, a wheeled chassis can be used for small and medium-sized pavers without chipping, or a 2 or even 4-track crawler type chassis for large pavers with an integrated chipping spreader. The SHE 25 worm gear screw jacks support all expansion stages.
Further information on worm gear screw jacks of the Pfaff-silberblau brand from Columbus McKinnon Engineered Products is available online at
Caption 1: Paver from Linnhoff & Henne with 4 crawler tracks (Source: Linnhoff & Henne)
Caption 2: Pfaff-silberblau screw jack SHE 25 for raising and lowering the paver (Source: Linnhoff & Henne)
About Pfaff-silberblau and Columbus McKinnon Engineered Products
The company Columbus McKinnon Engineered Products GmbH, Kissing/Germany, has ranked with its brand Pfaff-silberblau for many decades amongst the technology leaders in components and system solutions for mechanical motion and lifting technology. The portfolio ranges from sophisticated screw jack elements to innovative linear drives through to powerful lifting tables and wire rope winches. On the basis of these components, Columbus McKinnon Engineered Products also offers customized solutions for a wide range of different fields of application.
Columbus McKinnon Engineered Products is a subsidiary of the listed McKinnon Corporation (CMCO), Getzville/USA, a leading supplier of lifting and materials handling equipment.
Further information on Columbus McKinnon Engineered Products along with its brand Pfaff-silberblau is available online at www.pfaff-silberblau.com.
Engineered Products GmbH
Press: Petra Lugner
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In the South African Karoo semi-desert, astronomers working on the MeerKAT project are using 64 radio telescopes from the German manufacturer Vertex Antennentechnik to explore space. The elevation movement of the antennas is effected using the innovative technology from Columbus McKinnon Engineered Products.
The “Iron Gate”, on the Danube River in the southern Carpathian Mountains on the border from Romania to Serbia, is regarded as one of the most impressive gorges in Europe. Two river power stations built in 1972 – “Iron Gate” 1 and 2 – with a lockage had tamed what had been up until then the most dangerous section of the Danube River for navigation. For the maintenance of this lockage, Columbus McKinnon Engineered Products GmbH, Kissing/Germany, has now designed and installed a special lifting device. The linear lifting solution consists of four high-precision and proven heavy-duty screw jack elements SHE 100.1 made by Pfaff-silberblau. These lift and lower the heavy lock gate weighing some 200 t by 700 mm – with a deviation of less than 0.1 mm.
For natural gas filter towers in the Saudi-Arabian desert, Columbus McKinnon Engineered Products GmbH, Kissing/Germany, has developed and installed a special lifting and traversing system for exchanging filter elements. This involves the use of 19 specially designed trolleys in three different sizes and eight gantry cranes made from ATEX-compliant lifting elements and electric wire rope winches from Pfaff-silberblau. This extremely heavy-duty special solution is capable of withstanding temperatures of up to 50 degrees Celsius, sand and dust and even the explosive environment.
Thanks to their robust design, the successful SHE screw jack elements from Pfaff-silberblau are perfectly equipped for use in difficult environmental conditions. Designed specifically for use in the extremely aggressive conditions of the paper industry, the company Columbus McKinnon Engineered Products GmbH (Kissing/Germany) has now extended its versatile SHE range with the option “stainless”. The newly developed SSP series from Pfaff-silberblau with integrally cast swivel brackets is easy to clean and satisfies with ease the exacting requirements with regard to corrosion protection in the paper making and processing industry.
Hardly any other workplace has such harsh environmental conditions as a steel mill. In the face of scorching heat and the greatest dirt, the heavy work is mainly carried out by machines – and for this they must also be designed to be particularly robust. Pfaff-silberblau Hebezeugfabrik GmbH, Kissing, has developed a special push tube construction based on the SHE 150 for the adjustment of casting trolleys for the continuous foundry of a large German steel manufacturer. This encapsulated system solution from the Kissinger drive technology specialist has passed its "acid test" in the foundry and is now also suitable for other applications in heavy industry in which high loads have to be moved under unfavorable environmental conditions.
Lifting heavy loads under the harshest of conditions has always been one of the specialties for the jacking systems from Pfaff-silberblau Hebezeuge GmbH, with headquarters in the Southern German town of Kissing. With a clever special jacking system based on its versatile SHE worm-gear screw jacks, the company is now reducing downtimes for the steel industry’s galvanizing lines. The crucial feature: A special sensor monitors the temperature of the gearbox oil, and an active cooling circuit keeps it at the ideal level. Simultaneously, a contactless sensor constantly monitors the temperature at the screw and does not turn off the system unless there is a risk of overheating. In this way, system operators can ensure that their systems remain functional, but also help to minimize operational interruptions.
Reliable and safe performance is essential also in lifting applications for outdoor use as well as in aggressive and hygienically critical environmental conditions. Columbus McKinnon Engineered Products GmbH, Kissing (Germany), has extended its versatile SHE series of the Pfaff-silberblau brand with a “stainless” option.
With its innovative new design and featuring fully rust-proof components, the SHE-S series meets exacting of requirements in terms of corrosion protection and cleanability with its corrosion-resistant design. Also thanks to its cost-effective construction, the SHE-S “stainless” series by Pfaff-silberblau is attracting more and more customers, particularly from the food processing industry, pharmaceutical industry, paper industry, petrol industry as well as from steel hydraulics construction.
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