其他HFR系列锁紧螺母型号

THU – HFR NUT STANDARD TYPE

The principle

The principle of selflocking of the THU nut is to compress the thread of the flank of the male element on two sectors located on the same plane and symmetrically opposite.The plane of the sectors being perpendicular to the axis of the threading of the nut.

This principle is obtained by making two calibrated slots in the upper turret of the nut which are then crushed under a specific load to obtain a permanent deformation of the two slots (elastoplastic deformation).

During the assembly, the deformed slots in the upper turret of the THU nut are pushed by the thread of the male element. This push generates pressure on the male element’s net flank over two sectors creating a constant braking torque (called self-braking). This self-locking torque is independent of the torque applied when tightening the THU nut.

Applicable Industry

● Railway & Transports

Self-locking nuts are used on passenger’s trains,freight equipement, track works, electrification, metro, tram and buses.
Wheteher it’s for high speed train, metro or freight wagon, there is always a common purpose: that J. Lanfranco’s nuts are functional ans ensue the safety. When public safety is at staeke, there must be no risk taken with your fastening systems.

● Energy

Self-locking nuts have been chosen for their reliability in response to the most demanding requirements of players in the petrochemical industry. The use of J. Lanfranco nuts on compressors meets the unfailing expectations of the petrochemical industries. The company J. Lanfranco offers a complete range of self-locking nuts for all types of installations.

● Mining & Cement

Vibrating tables are subject to some of the most demanding service conditions: strong repeated shocks and vibration. This is often the bottleneck of mining since the premature loosening of screens causes unplanned shutdowns. The unanticipated sieve replacement results in: Reduced production throughput
、A decrease in profitability.Many customers have chosen ESL and ERM self-locking nuts for the operating performance, as well as for the ease and speed of maintenance.