Contents
With the new ROBA-stop® M 2000 and ROBA-stop® S Size 11, developed for high-torque maritime, port crane and heavy industry applications, we are pushing the boundaries. The accelerating electrification of industrial drive systems makes it possible to obtain much higher torque and power density from compact motors. MAYR® is meeting the critical safety requirement emerging in the high braking torque segment above 1,000 Nm with its new-generation "XL Safety Brake" solutions.
Heavy Loads and Harsh Environmental Conditions
Large-scale applications such as port cranes, offshore platforms, deck cranes and heavy industry hoisting mechanisms operate under exceptionally high loads and braking torques. In these systems, it is vital not only to hold loads statically, but also to safely decelerate and stop a load moving at full speed in the event of an emergency stop (E-Stop) or power failure.
Salt water, high humidity, abrasive dust and extreme temperature fluctuations in the environment directly challenge the reliability of safety brakes. mayr® power transmission has brought decades of engineering know-how and its proven spring-applied safety principle to these demanding conditions, extending the ROBA-stop® S and ROBA-stop M® series with new XL models.
New ROBA-stop M® 2000: High Dynamic Capacity
Developed for mounting on the free shaft end in the slewing, travel and hoist drives of construction and port cranes, overhead travelling cranes and in-plant heavy lifting systems, the ROBA-stop M® 2000 redefines the standards in its class.
During normal operation the system functions as a holding brake that engages when the shaft reaches zero speed, while in emergencies it offers high dynamic braking capability able to absorb peak friction work.
The new ROBA-stop M® 2000 provides a safe static holding torque of up to 3,500 Nm, as well as a dynamic braking capacity of 2,500 Nm during emergency stops. With IP54 protection for standard indoor use and fully sealed IP66 protection for harsh outdoor and construction site conditions, it provides uncompromising safety in heavy industry applications.
Built for Maritime Use and Salt Water: ROBA-stop® S Size 11
In offshore and port applications, protection requirements go far beyond standard industrial levels. For these environments, MAYR® has launched the new ROBA-stop® S Size 11 model, which has IP67 protection and superior corrosion resistance (1,200 Nm dynamic braking torque).
The brake housing is fitted with a special seawater-resistant primer and, with a top coat depending on the customer application, meets the highest corrosion protection classes (C5-M / CX) under the DIN EN ISO 12944 standard.
Ease of Installation and Maintenance: An Innovative Approach
In difficult mounting positions and on tall crane towers, maintenance work is a critical parameter in terms of both personnel safety and downtime costs.
On the new ROBA-stop® S Size 11, the rotor and friction linings can be accessed directly from the rear without removing the brake from the motor. When the friction linings wear, only the air gap needs to be adjusted, or at the end of the service life the rotor can be easily replaced via the rear cover. This innovation minimises service time and risk in offshore and construction site conditions.
Read in the e-magazine — Page 18
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Güç Aktarım
Güç Aktarım (Power Transmission)Güç Aktarım · Kasım 2026Read the latest issue free →
