Close together, far apart – The precision Schmidt-Kupplung

Wherever driven equipment is required to be axially displaced during operation, problems tend to arise. This is usually because the displacement can be disproportionate to the distance between shaft ends (DBSE). This can mean that, using conventional shaft couplings, it becomes impossible to transmit loads through a large parallel shaft offset without increasing the distance between shaft ends (DBSE). This has the effect of increasing the machine's footprint, which is not an acceptable outcome in most instances. In addition, other coupling designs may suffer from a degradation of torque capacity and increased backlash during operation when required to accommodate such a high degree of parallel offset. Fortunately, a viable alternative to this problem does exist in the form of the Schmidt-Kupplung range of shaft couplings offered by Abssac. The Schmidt-Kupplung allows for exceptional radial movement while reliably transmitting backlash-free torque. This well-balanced system transmits torque without adding side loads to the drive. Most importantly, the Schmidt-Kupplung delivers all these advantages in an extremely compact design. For example it is possible to have a parallel shaft offset of 275mm in an overall length of 284mm. A classic design for extreme parallel offset, the Schmidt-Kupplung is a compact, torsionally stiff performance shaft coupling that compensates for variable parallel shaft offset during operation. The Schmidt-Kupplung is the ideal precision component for shaft connection in confined spaces. Through its modular construction both torque transmission and radial offset capacity can be optimised for each application. The well-balanced design means that the Schmidt-Kupplung is used in many applications, in fact the design can be used in any transmission design where high torque, high shaft offset and small DBSE is present. The precision coupling transmits torque under constant velocity at all possible offsets and can transmit torque ranges from 35 Nm to 6610 Nm. The couplings are able to transmit huge amounts of torque because the central disc is always defined. Indeed, it is a mechanical guarantee that the centre disc finds its location and is always in the same place when the device is offset. Typical applications for the Schmidt-Kupplung range include printing machines, roll forming machines, laminating machines and corrugated paper and papermaking machines. Of these, however, printing makes up the largest area of application. One reason for this is that shaft couplings for the printing industry are required to work with absolute precision to guarantee a register pressure and therefore ensure a high print quality. The Schmidt-Kupplung is available in three basic series for various performance levels (Standard; Power Plus and Offset Plus). There are three different shaft-hub connections available: a taper lock, standard bore or flange mount. T: 01386 421005 F: 01386 422441 www.abssac.co.uk E: sales@abssac.co.uk