Leading hydraulic products manufacturer Holmatro Industrial Equipment
recently delivered two custom-made double-acting lock nut cylinders for the Polish mining industry.
Featuring a capacity of 400 tons each, the two cylinders were hardly bigger than gravity return lock nut cylinders. The new double-acting lock nut cylinders will be used for machine maintenance.
Traditional double-acting lock nut cylinders need to have the plunger lengthened to obtain the correct guidance and seal, making the cylinder impractically tall. However, these cylinders are in great demand as they allow loads to be controlled with extreme accuracy.
Holmatro therefore, decided to design double-acting lock nut cylinders with a lower build-in height. The new design has the cylinder fitted with an intelligent return plunger instead of a stop ring, resulting in considerably lower build-in height and making the double-acting lock nut cylinder a suitable tool for levelling, climbing, synchronised lifting and lowering applications.
Holmatro can custom-design and manufacture double-acting lock nut cylinders with varying tonnages and lengths of travel on request.