Everybody needs one

Backlash-free, reliable servo couplings for all drive constellations Depending on the respective application, shaft couplings in servo axes are subject to very different requirements. mayr® power transmission therefore provides a wide and mature product portfolio and permanently extends its standard modular system. Furthermore, new, modern production processes guarantee favourable prices and short delivery times. A large number of different servo couplings is offered on the market. And their task seems easy: In the servo axes, the shaft couplings have the fundamental function of transferring the motor power accurately from one shaft onto another and of compensating for any occurring shaft misalignments. And so many couplings appear comparable at first glance – but the devil is in the detail. The couplings have to function and fulfil their task reliably. Poorly designed couplings, for example those with imprecise bores, steel bellows or disk packs, lead to restoring forces in the system and at worst to damages to the machine. So what characterises a good product? Know-how and experience High-quality products such as the servo couplings by mayr® power transmission are backlash-free – and not just in new condition. On these couplings, the backlash-free function is retained over the entire service lifetime. This protects them from wear and premature failure, above all at high speeds. In addition, mayr® power transmission makes sure, in particular in the high-speed range, that the individual parts are manufactured with high levels of precision and narrow axial run-out and shaft run-out tolerances, and that the couplings feature a high balance quality, as they must function accurately and reliably even under extreme conditions. To ensure this, the established family-run company has extensive testing possibilities at its disposal and tests the couplings comprehensively under the conditions prevailing in the real application. Even for so-called mass products such as servo couplings, a modern manufacturing process and the required experience and know-how in the field of power transmission are indispensable. And even though shaft couplings are frequently classed as simple accessory parts, they are in fact important components within the overall system. If questions should arise regarding the product, or should consultation be desired or necessary, mayr® power transmission supports its customers with technically-competent contact partners – and this not only in Germany, but with a global service network. An extensive product range In production systems, production accuracy, feed rates or lifetimes are mainly dependent on the quality of the servo axes and their components. Every drive has its own specific characteristics, and places very different requirements on the couplings. The power transmission experts from Mauerstetten offer a comprehensive and mature product portfolio for all different drive constellations. The company has different steel bellows, elastomer and disk pack couplings in its portfolio, covering a wide range of torques and speeds. This variety of versions provides a high degree of flexibility for various applications. Low price, high quality Just recently, the company extended its standard modular system with several new hub designs and intermediate sleeves, and so mayr® power transmission is in a position today to provide solutions for all drive constellations in servo technology easily and quickly. The intelligent modular system also ensures high availability and short delivery times for standard components. Furthermore, the company is equipping itself for the future and is reacting to continuously increasing challenges with new, modern production methods and optimised internal handling. For the customers, this means a large selection of servo couplings, short delivery times and favourable prices – naturally in the accustomed quality, made by mayr® power transmission in Mauerstetten. Proven clutch in a new design For the flexible ROBA®-ES claw coupling this means: proven quality in a new design and additional hub variants such as for example split-shell hubs, or camlock stud hubs for hollow shafts – to cover all the shaft-hub variants required on the market. The ROBA®-ES couplings are always used in servo axes when critical vibrations occur and when torsionally rigid shaft couplings reach their limits. They transmit the torque backlash-free and compensate for shaft misalignments. The damping compensation element protects the drive system against critical vibrations. However, the couplings are torsionally rigid in such a way that even with highly-dynamic servo drives, no compromises have to be made on accuracy. The damping characteristics and the rigidity of the couplings can be varied via different plastic Shore hardnesses. In addition, the ROBA®-ES claw couplings are characterised by maintenance-free, media-resistant and temperature-resistant properties and thus guarantee maximum operational safety. Steel bellows couplings: Precise and absolutely backlash-free With the smartflex® steel bellows coupling, mayr® power transmission provides a patented shaft coupling which is designed with a multi-layered steel bellows. This gives the coupling a high torsional rigidity, which in turn ensures high positioning and run-out accuracy and an absolute backlash-free and therefore error-free torque transmission between the two shafts. In addition, the multi-layered bellows design features a far higher misalignment compensation capability in comparison to single-layer bellows. Higher misalignment compensation capability also means higher reliability, operating safety and lifetime. Depending on the requirements, glued, welding or clamping solutions are available for the connection between hub and steel bellows. However, in practice the clamping connection has established itself today as the smart and permanently backlash-free solution, as welding, for example, can cause thermal stress at the point of connection, which can lead to bellows breakage in case of shaft misalignment when in operation. In comparison to clamping or welding, glue connections react sensitively to high temperatures and under certain circumstances also to cleaning agents or other aggressive media. The clamping connection, however, is not only the most gentle and good-natured variant, it also permits the smartflex® couplings to be assembled very easily and flexibly according to the modular principle, and easily adapted to the changed shaft diameter or to different shaft distances. In this way, for example, variable intermediate sleeves which are clamped between two short smartflex® designs can easily and quickly bridge larger shaft distances. Strong performance in a compact package Disk pack couplings such as the ROBA®-DS have the highest torsional rigidity compared with steel bellows and elastomer couplings. They are robust and resistant to different temperatures and are wear-resistant and maintenance-free, which is why they are especially suitable for use in extreme ambient conditions. A wide-ranging standard modular system with intermediate sleeves and a multitude of available hub designs ensures, in addition to high flexibility, adaptability in numerous drive constellations. The couplings with their appropriately-selected hubs can be easily and quickly installed and deinstalled, even in difficult ambient conditions. The nominal torques stated in the catalogue can be used for all ROBA®-DS disk pack couplings without any restrictions. The stated shaft misalignments can be utilised to the sum of 100% without influencing the transmittable torque. Complete solutions from a single source In addition to shaft couplings, mayr® power transmission has developed and produced ground-breaking, reliable safety brakes and overload clutches for decades. Their customers appreciate receiving everything from a single source and therefore if possible saving on additional suppliers and costs. Therefore, in many applications, for example, combinations of shaft couplings and torque-limiting safety clutches are used. The latter protect machines against expensive overload damage. mayr® power transmission provides the know-how and service from a single source for these complete solutions