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Jacking systems


DLT design and supply a range of specialist jacking systems for heavy lifting operations. Our jacking systems were formerly sold under the name of Zalcon, which has since become part of DLT. Our designs are based on many years of experience of using the equipment ourselves to carry out many of the heavy lifting operations featured on this web site. All DLT jacking systems are designed for reliability, ease of handling and maintenance in the field and are tested and independently certified prior to leaving our works. Our systems are used around the world by many of the top international contractors. If you have a heavy lifting operation to carry out we will be pleased to provide expert advice on the most appropriate system for your needs. If required, we can also engineer and supervise the heavy lift operation for you and train your staff in the use and maintenance of our equipment.

DLT Strand Jack systems
We offer a range of strand jacks, hydraulic power packs and control systems to cater for all requirements and will be happy to advise on the right system for your project. Our strand jacks incorporate the latest safety features and range from light DL-S15 (15 tonne lifting capacity per jack) ‘super tirfors’ through to our DL-S914 (914 tonnes lifting capacity per jack) and can be safely used in combinations of up to 40 jacks by a single operator using our DL-P40 computer control system. Please see our brochures page to download a power point presentation showing the operating sequences for lifting and lowering using a strand jack.

DL-S185 strand jack
DL-L30/4/E power pack
DLT Climbing Jack systems
Climbing jacks offer an attractive alternative to strand jacks where it is desirable to keep the load path beneath the item being lifted. We have used climbing jack systems ourselves for lifting bridge structures, roofs and petrochemical vessels and find them to be a rugged and useful addition to our fleet. Sometimes referred to as ‘Koala bear jacks’, they work by climbing a square compression bar that transfers the lift load down to its base. Each jack can have a lifting capacity of between 100 and 450 tonnes. The square bar is restrained from compression buckling by light restraints, which can be fitted to building columns, bridge piers etc. Safety, power and control systems are as offered for our strand jacks. Please see our brochures page to download a power point presentation showing the operating sequences to lift and lower using a climbing jack.
DL-C125 climbing jack
DL-L7.5/1/E power pack
DL-M4 control panel