【文章內(nèi)容簡介】 ng tapered segment guaranties a wear and maintenancefree operation.Torque limiters with damping PropertiesR+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 hardnessThere 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 sealedFor applications in the food area it is mostly required to oftect the coupling against aggressive cleaning detergents , liquid media, or dirt. Sealed couplings are also used in cleanroom technology and in very dusty applications. A plete sealing that is optionally offered by R+W avoids leaking grease and at the same time penetration of coupling damaging substances. This solution ofvides all the sealing elements integrated in one ponent. An Oring is inserted in the base element of the coupling and covered by an extended Actuation ring. This system makes sure that the external dimensions of the coupling stay the same. Costly solutions where the coupling was sealed with a housing are therefore unnecessaryThe plete programm is additionally offered in stainless steel version. Nitrocarburizing, oxidizing, or nickelplating is possible for steel types. Aluminum can be anodized, other materials and surfaces can be offered on request.Function of the patented R+W prinzipleR+W’s patented operational principle guarantees reliable and safe protection against overload even with heavy loads. Due to the spring loaded ball detent design of the coupling high repeating accuracy of the preset disengagement torque is reached and continuous operation is ensured when using a ball detent design Torque Limiter vs. a slip clutch. Overload protection does not allow any ofmises in regard to reliability and quality of the individual ponents although Torque Limiters are always designed for an economic use. R + W conceived a solution which stands out.Function always assuredAt the factory the Torque Limiters are adjusted to the exact disengagement torque requested by the customer. After installation the disengagement value can easily be changed to siut actual requirements.The torque adjustment range is engraved on the adjustment nut. An outstanding feature opf the R+W design is an easy radial adjustment which clearly facilitates adjustment of the coupling. Due to the positive stop on the adjustment nut, disengagement of the coupling is allways assured.For each coupling model there are four different function systems available:single position = attempting reengagement automatically in the same position (360176。)multiposition = attempting reengagement in several positions per revolutionfull disengagement = plete load separation, must be reengaged manuallyload holding = no disengagement occurs but an external sensor can be instantly triggered.With these four function systems R+W offers a solution for every application.ConclusionMost importantly in mass production situations, machine down time causes high loss of Production which inevitably results in rising unit costs. When using a Torque Limiter, which separates driving force and driven force in milli