Piazzalunga MOTION CONTROL TECHNOLOGIES

Piazzalunga torque limiters are active safety devices designed for use in the entire kinematic chain of any machine or plant. Their versatility and reliability, ease of installation and adjustment, effective performance at high speed and in applications combined with excellent response time make them preferable to less effective electronic devices. Use of our limiters resolves numerous problems connected with secure complete protection of your plant or machinery from overloads, with consequent reduction of down time and unproductive machines, entirely in compliance with standard EN ISO 13489-1....

Coaxial assembly # 4* # # • fli • «s « & LF/GC LF/GS LF/GE LSE/GC LS-LR/GT LS-LR/GR LS-LR/GE LSG/GS/LK LSG/GS/MX LSG/GF Parallel axis assembly

LF LF/CK LF/GC LF/GS LF/GE LSE/C LSE/F LSE/GC LS – LR LS – LR/F LS – LR/GT LS – LR/GS LS – LR/GE LSG/P LSG/N LSG/GF LSG/GS AEROSPACE INDUSTRY HEAVY INDUSTRY TIMBER WORKING MARINE ENGINEERING MACHINE TOOLS PAPER INDUSTRY TRANSPORT SYSTEMS

Friction limiter LF • Overload control by transmission part slipping • Friction rings without asbestos • Excellent in dusty environments • Protection in both directions of rotation • Torque adjustment system with simple precise engagement by means of an adjustable ring nut • Complete with transmission organ (crown, pulley, etc.) • Friction rings with different compounds for special applications • With hole and keyway or set up for shrink discs or other locking types • With anticorrosion surface treatment TRANSMITTABLE TORQUES

LF series friction torque limiter • Overloads from 2 to 23000 Nm Available with: • Spiral springs as alternative to standard disc springs • Customised alignment, interchangeable with competitors' products (distance “L”) • With statically balanced GR type radial ring nut • Anticorrosion surface treatment TECHNICAL DATA • On request data not binding P-Q*: on the Gr.025 the hole for grub screw is made on the side of the ring nut instead of the flange side. Technical details: the weights refer to the torque limiter (LF) pilot bore.

LF/CK model with overload response signal • Overloads from 3 to 23000 Nm • Overload response signal • Automatic re-engagement • Friction rings with different compounds for special applications • Spiral springs as alternative to standard disc springs TECHNICAL DATA • On request data not binding Technical characteristics: the weights refer to the torque limiter (LF/CK) pilot bore.

LF/GC series model with chain coupling GR TECHNICAL DATA • On request data not binding Technical characteristics: the data given refers to the complete unit (LF/GC). Technical characteristics: the weights refer to the complete unit (LF/GC) pilot bore.

TECHNICAL DATA • On request data not binding ... + GS (misalignments)*: the data refers to the normal red star 98 Sh-A. Technical characteristics: the data and weights given refer only to the application (GS/GE), for the data of the torque limiter see page 7.

LSE series compact ball torque limiter • Simple and compact, an excellent alternative to the friction type • Overload control by ball detent device • Standard version wit re-engagement in phase at 360° • Available with customised re-engagement (30°, 45°, 60°...) • Available only with finished bore, maximum 55 mm • Standard crown transmission for chain (../C) or flange (../F) • Simple precise balanced ring nut adjustment of the torque • Set up for shrink disc or other locking types. • Microswitch or proximity switch for automatic stop when overloaded TRANSMITTABLE TORQUES

LSE series compact ball torque limiter • On request data not binding Technical characteristics: the data given refers to the complete unit (LSE/F - LSE/F/TAC). Technical characteristics: the weights refer to the complete unit (LSE/F - LSE/F/TAC) pilot bore.

LS + LR series ball or roller torque limiter • Overload control by ball or roller device • Ideal for use in moist and oily and environments with low friction • Very rapid response times • Standard version with re-engagement at equidistant phase or 360° • Simple precise balanced ring nut adjustment of the torque. • Complete with transmission part (crown, pulley, gear) • Set up for shrink disc or other locking types • Spiral springs for applications at low operating torque • With re-engagement at customised phase (30°, 45°, 60°..) • Microswitch or proximity switch for automatic stop when overloaded...

TECHNICAL DATA • On request data not binding Technical characteristics: the weights refer to torque limiters (LS or LR) pilot bore.

LS/F + LR/F series model with support flange TECHNICAL DATA * With deep keyway in accordance with UNI7510 data not binding Technical characteristics: the weights refer to the torque limiter (LS/F) pilot bore.

LR/L series roller type torque limiter phase with free rotation ID • On request * With deep keyway in accordance with UNI7510 data not binding Technical characteristics: the weights refer to the torque limiter (LR/L) pilot bore.

LS/GT + LR/GT series model with torsionally rigid disc coupling TECHNICAL DATA • On request data not binding Technical characteristics: the data given refers only to the application (LR/GT - LR/GS), for the data of the torque limiter see page 15. Technical characteristics: the weights refer only to the application (LR/GT - LR/GS) pilot bore.

DIMENSION TABLE • On request data not binding Technical characteristics: the data given refers only to the application (GEC), for the data of the torque limiter see page 15. Technical characteristics: the weights refer only to the application (GEC) pilot bore.

LSG series torque limiter without angular play • No angular play • Standard version with re-engagement at equidistant phase or at 360° • Available only with finished bore • Immediate response • Simple precise balanced ring nut adjustment of the torque. • In stainless steel for use in alimentary or pharmaceutical plant • With interface flange for the more common index drives • Complete with transmission part (crown, pulley, gear) • With customised re-engagement (30°, 45°, 60°...) • With microswitch or proximity switch for automatic stop on overloading TRANSMITTABLE TORQUES