【文章內(nèi)容簡介】 movement of the Actuation ring can be sensed, and used to control and shut down the machine. Immediate availabillity of the machine after reengagement of the Torque Limiter can be assured. Increased economic efficiency Optimized disc springs and materials adapted to the use of the coupling allow for the pact and reliable design, better performance and wer mass. Also a long service life and maintenance free operation are importtant consierations when selecting couplings. Smaller couplings bined with a higher torque density additionally result in a cost advantage due to smaller dimensioning. On average the size of the Torque Limiter has been reduced by approx. 1/3 pared to other available products. This results in a reduced separation of masses in case of a crash due to the reduced weight and a smaller technical diameter. When paring the facts, it is clear that R + W develops and delivers the most pact Torque Limiters available period. A great variety The advantage of ball detent design Torque Limiters is the separation of the drive and the driven elements in milliseconds in case of an overload. Easy handling reliability are further advantages. Machine designs with little installation space or difficult to access areas do however often require special solutions. The R+ W range facilitates the easy modification by means of a modular concept. The hub type that is appropriate for the application is selected and integrated for the ideal design. The pressfit principle that has been developed by R+W uses the axial spring force of the metal bellows to pretension a tapered male part into the corresponding counterpiece slightly axially. An axial pretensioning of the metal bellows of only millimeters assures the absolutely backlashfree torque transmission. The selfadjusting tapered segment guaranties a wear and maintenancefree operation. Torque limiters with damping Properties R+W has designed and launched a new overload protection with damping Properties. This bines the known elastomer couplings with a torque limiting portion. Between the safety element with clamping hub and the other coupling half, there is an elastomer insert made of thermoplastic polyurethane (TPU) absorbing the drive vibrations. Owing to its elasticity, it is able to pensate axial, angular and lateral misalignment, vibrations, and impacts. During operation in machines with frequent impact, change or vibration load, its high damping capacity can have a positive effect on the service life of the connected aggregates. This however only applies to firstquality couplings which consist of individual elements showing the necessary truth of running and concentricity of the bores. Poor manufactured couplings may cause pulsating radial forces onto the rotational axle during operation. Choice of different Shore hardness There is a choice of elastomer inserts with different Shore hardness 98 A, 64 D, and 80 A. The inserts are calibrated most precisely in order to ensure perfect mounting of the coupling. The otherwise usual, but high pretension of the inserts is thus reduced and the assembly is much easier. If on the other hand the inserts are pressed in at too high pretension, the radial forces occurring with lateral misalignment on the shafts will increase. In addition, there is the risk of too much inner heating of the inserts because of increased flexing work. Made of special steel, even pletely sealed For applications in the food area it is mostly required to oftect the coupling against aggressive cleaning d