Press Release
PI.6.39.EN
Mauerstetten, 21.03.2016
Longversion
Certified Safety
Pneumatic brake system ROBA®-linearstop tested by TÜV Süd
On gravity-loaded axes in machines and systems, there is always a potential risk of crashing loads. In order to protect people and materials reliably against injury and damage in spite of this risk, mayr®power transmission has therefore long provided a full-quality safety brake for vertical axes which has been tested by the TÜV (German Technical Inspectorate) with its ROBA®-linearstop. Now, the company has also had its pneumatic clamping unit certified by the TÜV Süd (Southern German Technical Inspectorate). In addition to the required test criteria for holding brakes, 100 dynamic braking procedures were conducted during the test – the brakes were also easily able to fulfill these requirements.
In order to secure gravity-loaded axes in machines and systems, linear brakes, among others, are particularly effective, as they take effect on separate brake rods independent of the drive line. Therefore, no toothed belts, couplings or spindle nuts are located in the safety line of the brake. With its ROBA®-linearstop, mayr®power transmission has developed a reliable safety brake specially designed for braking and holding linearly moved masses, and which takes effect on a separate brake rod. The brake works according to the fail-safe principle, generating the braking force through thrust springs. Depending on the design, it is released hydraulically,pneumatically or electromagnetically; it is available as a full-quality brake for dynamic braking actions or as a clamping unit.
Most linear brakes available on the market today usually function as static clamping units designed to hold axes safely at a standstill. However, people may remain under suspended loads during operation, maintenance or even during the production process, without the load transfer having been made onto the mechanical linear brake. If the drive were to fail completely in these operating conditions, the linearbrake alone would be responsible for the reliable deceleration of the load. Therefore, the ROBA®-linearstop clamping units by mayr®power transmission are dimensioned so that they are also suitable for emergency braking procedures. And this has now also been confirmed by the TÜV Süd.
TÜV-inspected linearbrakes
“In addition to the required testing criteria for holding brakes, we have also conducted 100 dynamic braking actions with our pneumatic clamping unit during the certification procedure by the TÜV Süd“, explains Bernd Kees, the Product Manager at mayr®power transmission. “This test, which is not normally part of the TÜV test for holding brakes, was important to us, as dynamic braking actions occur repeatedly in practical application.“ The pneumatic clamping unit was therefore tested under realistic conditions and was able to fulfill all the requirements without any trouble at all. In addition to the pneumatic holding brake, mayr®power transmission offers another pneumatic version of the linearbrake, which has been inspected and confirmed by the TÜV Süd as a full-quality dynamic braking device a while ago. It easily fulfils the basic test principles for emergency braking actions with holding function for linear movements (GS-MF-28) of the Berufsgenossenschaftlichen Instituts für Arbeitsschutz (Trade Association Institution for Occupational Protection,German abbreviation: BIA). This basic test principle defines 1 million switchings, both with load transfer and without, as well as an additional 1000 dynamic braking actions.
Chr. Mayr GmbH + Co. KG
Eichenstraße 1, 87665 Mauerstetten
Tel. 08341/804-0, Fax 08341/804-421
E-Mail:
About Mayr power transmission
The family-run company Mayr power transmission (founded in 1897) is a leading manufacturer of safety brakes, torque limiters and shaft couplings. These products are primarily designed for application in electrically driven machines and systems. They can be found, for example, in filling plants, in machine tools, in packaging and printing machines as well as in elevators, in wind power plants and in stage technology. Currently, approximately 600 employees work at the headquarters in Mauerstetten, in the Allgäu region. Worldwide, Mayr power transmission has more than 1000 employees. With production plants in Poland and China, sales subsidiaries in the USA, in France, Great Britain, Italy, Singapore and in Switzerland as well as 36 additional country representatives, the company is active around the globe.
Fig. 1:
File: F-6-74-Bild1.jpg
The pneumatic clamping unit ROBA®-linearstop has been certified by the TÜV Süd. In addition to the required test criteria for holding brakes, 100 dynamic braking procedures were conducted during the test – and the brake was also able to fulfil these requirements without any trouble at all.
Fig.: mayr® power transmission
Fig. 2:
File: F-6-74-Bild2.jpg
Another pneumatic design of the ROBA®-linearstop has been tested and confirmed by the TÜV Süd as a full-quality dynamic braking device a while ago. It fulfils without question the basic test principles for emergency braking actions with holding function for linear movements (GS-MF-28) issued by the Berufsgenossenschaftlichen Instituts für Arbeitsschutz (Trade Association Institute for Occupational Protection).
Fig.: mayr® power transmission
Fig. 3
File: F-6-60-Bild2.jpg
As is the case for all mayr® products, the ROBA®-linearstop brakes are also subjected to careful quality control: The braking force, switching times and positioning accuracy have been examined in detail on the drop test bench especially designed for linear brakes.
Fig.: mayr® power transmission
Press Contact:Simone Dauer
Press Officer
Tel. 08341/804-2332
Fax 08341/804-492332
E-Mail:
Press Release
PI.6.39.EN
Mauerstetten, 21.03.2016
Short version
TÜV-tested Linear Brake
With its ROBA®-linearstop, mayr® power transmission has developed a reliable safety brake specially designed for braking and holding linearly moved masses. It has long been tested by the TÜV (German Technical Inspectorate) as a full-quality safety brake a while ago. Now, mayr® has also had its pneumatic clamping unit certified by the TÜV Süd (Southern German Technical Inspectorate).
The linear brakes available on the market today usually function as static clamping units and are designed to hold axes safely at a standstill. However, people may remain under suspended loads during operation, maintenance or even during the production process, without the load transfer having been made onto the mechanical linear brake. If the drive were to fail completely in these operating conditions, the linear brake alone would be responsible for the reliable deceleration of the load and the safety of the operators. Therefore, the ROBA®-linearstop clamping units by mayr® power transmission are dimensioned so that they are also suitable for emergency braking procedures. And this has now also been confirmed by the TÜV Süd.“In addition to the required testing criteria for holding brakes, we have also conducted 100 dynamic braking actions with our pneumatic clamping unit during the certification procedure by the TÜV Süd“, explains Bernd Kees, the Product Manager at mayr® power transmission. “This test, which is not normally part of the TÜV test for holding brakes, was important to us, as dynamic braking actions occur repeatedly in practical application.“ The pneumatic clamping unit was therefore tested under realistic conditions and was able to fulfill all the requirements without any trouble at all. In addition to this clamping unit, mayr® power transmission offers another pneumatic version of the linear brake, which has been inspected and confirmed by the TÜV Süd as a full-quality dynamic braking device a while ago. It easily fulfils the basic test principles for emergency braking actions with holding function for linear movements of the Berufsgenossenschaftlichen Instituts für Arbeitsschutz (Trade Association Institution for Occupational Protection, German abbreviation: BIA). This basic test principle defines 1 million switchings, both with load transfer and without, as well as an additional 1000 dynamic braking actions.