Tunnelling machines / Underground mining machines
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your reliable partner Tunnelling machines Underground mining machines Torque limiters Shaft couplings Safety brakes

Picture credits Title: shutterstock/waniuszka; Page 3 top: shutterstock/Banana Republic images; Page 3 left: Drawings: Michael Paetow; Page 5 ® top: shutterstock/VILevi; Page 7 top: shutterstock/weareone; Page 9 top: shutterstock/Evgeniy Isaychev; Remaining: mayr  power transmission

Protection and safety for the tough guys For more than 100 years, the company mayr® power transmission has stood for innovations and premium quality. The family-run company from the Allgau region can rely on decades of experience in development, manufacture and application, and still has a major influence on power transmission today with its path-breaking products. In the field of heavy load applications, such as in tunnelling or mining machines, mayr® power transmission stands for future-orientated solutions with high performance density as well as high torques and speeds. Wherever...

EAS®-HT torque limiters The destruction-free overload protection for high torques Faster, higher, stronger – the requirements on heavy machinery and all their components are increasing. Therefore, mayr® power transmission offers with the disengaging EAS®-HT element clutches ideal solutions at very high torques and speeds or high mass moments of inertia. These clutches are based on individual overload elements which are integrated into the flanges. The achievable torque results from the pre-tension force of the elements multiplied by the number of elements and the radius at which the...

Customer-tailored overload protection The high-performance EAS®-HT element clutches are essential components in order to achieve high productivity and to prevent downtimes due to overload damages. ● Positive locking torque transmission ● Adjustable torque EAS®-elements for installation in two bearingsupported flanges facing each other or for integration into existing constructions ● Separates through disengagement ● Accurate and non-destructive ● Easy repeat operation start-up ● Robust and with long service lifetime ● High performance density ● Modular concept with numerous branch-optimised...

EAS®-HTL housed torque limiter Clutches with dust and water protection Adverse ambient conditions frequently prevail in heavy mechanical engineering applications. Dust, water spray, heat or cold not only place strain on the system personnel, but also on the individual components of the drive line. Here mayr® power transmission offers with the EAS®HTL a housed torque limiter which cannot be affected by adverse ambient conditions. It is available with different effective principles, i.e. in synchronous, ratchetting or disengaging design. This last is also available as an EAS®-reverse with...

Disengaging clutch with automatic re-engagement The EAS®-reverse with patented disengagement mechanism is a disengaging clutch which automatically re-engages simply by rotating backwards slowly. • Easy handling • Long run-out time • Robust double bearing • Favourable service factor • Extremely low backlash (< 0.05°) • Hardened functional components • Housing with standard IEC or NEMA dimensions • Temperature range from -30 °C to +80 °C • Torque range from 80 - 5,000 Nm • Bore diameter to 100 mm On the EAS®-reverse, the use of cup springs with a negative characteristic curve causes an...

ROBA®-DS disk pack couplings High-performance shaft couplings for high torques The ROBA®-DS disk pack couplings by mayr® power transmission are robust, reliable and temperature-resistant. They are therefore particularly suitable for use in extreme ambient conditions. In addition, the ROBA®-DS couplings are wear-free, meaning that they reduce the required maintenance effort to a minimum. mayr® power transmission has equipped the large ROBA®-DS disk pack couplings for high torques, i.e. with a nominal torque range from 22,000 to 110,000 Nm, with an installation-friendly, positive locking...

Performance density combined with backlash-free function The large ROBA®-DS disk pack couplings with conical connection are easy to handle. • Low screw tightening torques • Can be installed / de-installed radially • Easy and quick installation / de-installation • No hydraulic installation tools required; can be installed with a torque wrench • Backlash-free torque transmission • FEM-optimized disk shape • High torsional rigidity • High performance density • Compensation of axial, angular and radial misalignments • Wear and maintenance-free • Flexibility through customer-specific hubs and...

With the ROBA-stop®-S, mayr® power transmission as leading manufacturer has developed a safety brake especially for critical ambient conditions and outdoor applications. It accords with Protection IP67 and is therefore completely dust-tight and waterproof. The compact and solid housing with an integrated terminal box and without any pockets and grooves makes the brake resistant to damage caused by external influences. In addition, the high-quality primer on the brake body, the chrome or nickel coating of the inner components or the manufacture in rustproof stainless steel provide permanent...

For peak loads with high friction work The ROBA-stop®-S safety brakes work as holding brakes during normal operation. During critical operational situations, e.g. with EMERGENCY STOP or power failure, the brakes are designed to absorb peak loads with high friction work. • Compact construction and small outer diameters • Simple installation and operation • Long maintenance intervals • Completely dust-tight and waterproof • Protection IP67 • Tacho attachment possibility • Integrated emergency hand release • Braking torque tolerance range 50 - 3,000 Nm The ROBA-stop®-M safety brakes are...