Ropes for cranes and cranes are very often non-rotating ropes, i.e. those whose torque is low. A wire rope has low torque if the rope does not or almost does not rotate about its longitudinal axis under the influence of an unguided load or if it exerts very little torque on the end attachments. This is achieved by having the core of the rope have a winding direction opposite to the winding direction of the rope in low-twist ropes. When loaded, two opposite torques are created.

Pressed strands of ropes for cranes and overhead cranes are strands made of round wires, the diameter of which is reduced - thickened - after the twisting process by drawing, rolling or hammering. Before the pressing process, the round wire strand has a larger strand diameter. With the same strand structure, a larger diameter strand allows the use of thicker wires. This means that the dense strand has a higher fill factor and a higher breaking force than a comparable conventional strand made of round wires of the same diameter. Especially with multi-layer windings, the outer strands of adjacent rope strands interlock and thus lead to severe external abrasion.

A characteristic feature of dense weaves is a smooth, cylindrical surface. Thanks to this, they are much more resistant to abrasion and transverse pressure forces than conventional strands.

The diameter of the wheels and rope drums of cranes and overhead cranes is closely related to the diameter of the ropes for cranes and overhead cranes.

We will be happy to help you determine the optimal design of ropes for cranes and overhead cranes. More information can be found in our catalog "Lifting equipment" on pages 45-51.