Introduction ® TRASCO Jaw Couplings 1 www.jbj.co.uk/couplings.html #DriveLineHarmony Description ® The TRASCO flexible coupling is the flexible constant velocity coupling that assures the best performance in relation to the physical space occupied in its class. It has a very compact design and allows safe power transmission by absorbing peak loads and torsional vibrations. The elastic design of the polyurethane coupling element gear ring compensates for angular and radial misalignments and also absorbs small shaft length variation. The involute profile of the gear ring teeth prevents high stress concentrations on reduced surfaces and the crowned profile and avoids the transmission of axial stress. The high duty factor of these couplings is due to the fact that the elastomeric element works under compression and never under tension. TRASCO® couplings are suitable for working in both horizontal and in vertical positions and easily support any load variation or reverse motion. The two coupling halves are electrically insulated from each other. ATEX Directive 2014/34/EU It is possible to ask for specific certification for use in hazardous area according to ATEX Directive 2014/34/EU. TRASCO® couplings are available with specific mounting/operating instruction manual and conformity. For information, please contact the jbj Techniques Ltd. technical office, telephone: +44 (0)1737 767493 or email: info@jbj.co.uk TRASCO® flexible couplings consist of two precision machined metal hubs and an elastic gear ring (spider) which is resistant to oils, chemical agents, and heat. Hubs are available in cast iron GG25 or aluminum and, in case of special request, in steel or ductile cast iron GGG40. Each hub is available in version “A” and “B” (in standard or long hub “L” version) which can accommodate different size of bores, leaving unchanged the performance and the technical features. “A” Type “AR” Spider “B” Type “BL” Type “AL” Type
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