Double Acting Lock Nut Cylinders
An intelligent solution by Holmatro : Double-acting lock nut cylinders with a capacity of 400 tons. Exceptional, in view of the fact that these cylinders are hardly bigger (read: taller) than gravity return lock nut cylinders. The cylinders supplied are used for machine maintenance in the Polish mining industry.
Extremely low build-in height
Traditional double-acting lock nut cylinders are rarely supplied. This is because the build-in height of these cylinders is too high. For the double-acting version the plunger must be lengthened in order to obtain the correct guidance and seal. Which makes the cylinder impractically tall... Nevertheless, there is regularly demand for double-acting lock nut cylinders that make it possible to control loads with extreme accuracy. A reason for us to study the possibilities with regard to constructing this type of cylinder with a lower build-in height. The result is a completely new concept, in which the cylinder is not fitted with a stop ring, but with an intelligent return plunger. This results in a considerably lower build-in height that makes the double-acting lock nut cylinder a suitable tool for levelling, climbing, synchronized lifting and lowering.