Mechanical jacks with a lifting capacity of 10 to 100 tonnes and a stroke varying from 125 to 350 mm. The jacks are made of cast iron and are resistant to continuous heavy operating conditions like shipbuilding, bridge works and civil construction works. Holmatro's Journal Jacks can be used close to welding works and under water. 

Besides cast iron mechanical jacks, Holmatro also offers aluminium mechanical jacks. These compact and light-weight cilinders have a lifting capacity from 10 to 25 tonnes and a stroke varying from 80 to 100 mm. See below for the entire assortiment.

Tough perating conditions, minimum maintenance

Holmatro's extensive range of mechanical tools is produced to withstand tough operating conditions over long periods. The sustainable cast iron construction makes the tools suitable for use during welding work and for use under water. Despite these rough conditions, the tools are extremely maintenance-friendly. The parts are practically wear-resistent and the cast iron construction is dust proof. The self-locking property of the fully closed ratchet mechanism prevents entrance of the plunger under the pressure of heavy loads, thus making it even safer during use.

Lightweight construction with particularly low closed height

The aluminium mechanical jacks are compact and lightweight. The ball bearings usually used under the ratchet mechanism have been replaced by a special sliding pad. This results in a particularly supple movement of the plunger and a lower closed height of the jacks and makes them extremely suitable for applications in which the space available is restricted. From an ergonomic viewpoint, all jacks have a handle.

Variety of tonnage and stroke length

Holmatro offers  a total of 13 cast iron jacks with 7 different capacities: 10, 15, 25, 30, 35, 50 and 100 tons, and 7 different strokes: 105, 125, 130, 150, 200, 250 and 350 mm. All jacks, with the exception of the 100 tons model, can be expanded with an appropriate traversing bed and/or base plate. The aluminium jacks are available in 3 different capacities: 10, 15 and 25 tons, and 2 different strokes: 80 and 100 mm.