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 Nagoya University researchers break down plastic waste
29.05.2017 | Nagoya University

nachricht A new tool for discovering nanoporous materials
23.05.2017 | Ecole Polytechnique Fédérale de Lausanne

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: New Method of Characterizing Graphene

Scientists have developed a new method of characterizing graphene’s properties without applying disruptive electrical contacts, allowing them to investigate both the resistance and quantum capacitance of graphene and other two-dimensional materials. Researchers from the Swiss Nanoscience Institute and the University of Basel’s Department of Physics reported their findings in the journal Physical Review Applied.

Graphene consists of a single layer of carbon atoms. It is transparent, harder than diamond and stronger than steel, yet flexible, and a significantly better...

Im Focus: Strathclyde-led research develops world's highest gain high-power laser amplifier

The world's highest gain high power laser amplifier - by many orders of magnitude - has been developed in research led at the University of Strathclyde.

The researchers demonstrated the feasibility of using plasma to amplify short laser pulses of picojoule-level energy up to 100 millijoules, which is a 'gain'...

Im Focus: Can the immune system be boosted against Staphylococcus aureus by delivery of messenger RNA?

Staphylococcus aureus is a feared pathogen (MRSA, multi-resistant S. aureus) due to frequent resistances against many antibiotics, especially in hospital infections. Researchers at the Paul-Ehrlich-Institut have identified immunological processes that prevent a successful immune response directed against the pathogenic agent. The delivery of bacterial proteins with RNA adjuvant or messenger RNA (mRNA) into immune cells allows the re-direction of the immune response towards an active defense against S. aureus. This could be of significant importance for the development of an effective vaccine. PLOS Pathogens has published these research results online on 25 May 2017.

Staphylococcus aureus (S. aureus) is a bacterium that colonizes by far more than half of the skin and the mucosa of adults, usually without causing infections....

Im Focus: A quantum walk of photons

Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.

The quantum computer has fuelled the imagination of scientists for decades: It is based on fundamentally different phenomena than a conventional computer....

Im Focus: Turmoil in sluggish electrons’ existence

An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.

We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Marine Conservation: IASS Contributes to UN Ocean Conference in New York on 5-9 June

24.05.2017 | Event News

AWK Aachen Machine Tool Colloquium 2017: Internet of Production for Agile Enterprises

23.05.2017 | Event News

Dortmund MST Conference presents Individualized Healthcare Solutions with micro and nanotechnology

22.05.2017 | Event News

 
Latest News

3D printer inks from the woods

30.05.2017 | Life Sciences

How circadian clocks communicate with each other

30.05.2017 | Life Sciences

Graphene and quantum dots put in motion a CMOS-integrated camera that can see the invisible

30.05.2017 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>