Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Safe brakes for vertical axes

12.08.2011
New construction sizes, a higher protection and a new release monitoring system extend the possible fields of application

Vertical axis brakes from the ROBA®-topstop® construction series are used worldwide in machines and systems in order to increase safety, in particular in applications with gravity loaded axes. The innovations introduced at the 2011 Hannover Trade Fair now make this brake system even more versatile.


Exploded drawing of the ROBA®-topstop® with the IP 65 design sealing elements

The ROBA®-topstop® vertical axis brake is a safe brake system which, amongst other things, can contribute towards fulfilment of the harmonised standard 13849-1 for the Machinery Directive 2006/42/EC. In order to be able to use these safety brakes on larger servo motors and with Fanuc servo motors in a more flexible manner, this construction series has been extended by two further sizes. Size 175 has been especially conceived for mounting onto Fanuc motors. With a braking torque of up to 400 Nm, the new Size 260 is now capable of securing far larger loads than previously possible.
In many systems, the drive, and therefore the safety brake,
has to be installed directly into the machining chamber due to the constructional design of the drive. The brake is therefore subjected to water spray and various vapours. If these come onto contact with the friction linings, the braking torque may drop to an unpermitted level. In order to cope with these increased demands on the brake protection, all ROBA®-topstop® safety brake sizes are optionally available with protection IP65. Here special seals prevent humidity penetrating the brake.

Experience has shown that ROBA®-topstop® safety brakes are not only activated on emergency switch-offs and when the machine is completely switched off, but also on every cyclic stop. This results in a high quantity of switchings within a short time.

For this reason, mayr ® power transmission have switched to a contactless monitoring system with a proximity sensor for the release monitoring system.

This system is impact-resistant, shock-resistant, magnetic field-resistant and completely wear-free. In addition, it is extremely reliable (Reliability characteristic: MTBF value > 5000 years). This means that the inductive release monitoring system is far superior to the mechanical release monitoring system with microswitch previously used, which worked based on contact, in all ambient conditions.

Chr. Mayr GmbH + Co.KG
Eichenstraße 1, 87665 Mauerstetten
Tel. 08341/804-0, Fax 08341/804-421
E-Mail: info@mayr.de

Hermann Bestle | Chr. Mayr GmbH + Co.KG
Further information:
http://www.mayr.com

More articles from Materials Sciences:

nachricht Strange but true: Turning a material upside down can sometimes make it softer
20.10.2017 | Universitat Autonoma de Barcelona

nachricht Metallic nanoparticles will help to determine the percentage of volatile compounds
20.10.2017 | Lomonosov Moscow State University

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Neutron star merger directly observed for the first time

University of Maryland researchers contribute to historic detection of gravitational waves and light created by event

On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...

Im Focus: Breaking: the first light from two neutron stars merging

Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.

Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....

Im Focus: Smart sensors for efficient processes

Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).

When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...

Im Focus: Cold molecules on collision course

Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.

How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...

Im Focus: Shrinking the proton again!

Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.

It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ASEAN Member States discuss the future role of renewable energy

17.10.2017 | Event News

World Health Summit 2017: International experts set the course for the future of Global Health

10.10.2017 | Event News

Climate Engineering Conference 2017 Opens in Berlin

10.10.2017 | Event News

 
Latest News

Terahertz spectroscopy goes nano

20.10.2017 | Information Technology

Strange but true: Turning a material upside down can sometimes make it softer

20.10.2017 | Materials Sciences

NRL clarifies valley polarization for electronic and optoelectronic technologies

20.10.2017 | Interdisciplinary Research

VideoLinks
B2B-VideoLinks
More VideoLinks >>>