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The Roba-quatrostop from Mayr Power Transmission is a compact multi-circuit brake that is designed for applications within the film, stage and theatre industries.

The brake offers redundancy without doubling the brake torque; this allows gentle system braking, reducing stress on associated components.

The Roba-quatrostop comprises four independent braking circuits: three ensure the necessary safety, with the fourth offering the required redundancy — therefore braking torque is increased by only 33 per cent.

The unit is an electromagnetic, spring-applied safety brake; when power is removed from the system, it offers reliable and safe stopping in any position, according to Mayr Power Transmission.

Key specifications

• Factory tested and set, eliminating risk of adjustment errors during service and maintenance

• Independent release monitoring for each circuit ensures maximum safety

• Only periodic inspection of friction linings is required

• Noise damped to offer minimum disruption when switching

• All braking circuits can be switched and tested independently

• Range of electrical accessories available

Mayr Transmissions

Mayr are the first choice for torque limiters, clutches, electromagnetic safety brakes and precision shaft couplings.

Mayr combine more than 110 years of innovation, manufacturing technology and quality control with world-class levels of customer service to ensure we maintain our market leading position.

Torque limiters and friction clutches

  • Backlash free ball indent, magnetic and friction torque limiters for the protection of rotating machinery and other drive systems.
  • Torque range from 0.1 to 100,000Nm.

Electromagnetic safety brakes

  • Single and multi-circuit, holding and dynamic fail-safe brakes with EN81, IP67 and BGV C 1 options.
  • Torque range from 1.1 to 50,000Nm.

Precision shaft couplings

  • Torsionally rigid, backlash-free, flexible shaft couplings in a range of designs including metal disk, carbon spacer, bellows and elastomeric spider.
  • Torque range up to 110,000Nm.

Mayr’s products can be found in many of today’s most demanding of applications including:

  • Stage and theatre
  • Winching and hoisting
  • Water treatment
  • Wind energy
  • Bottling and packaging equipment
  • Machine tools
  • Food processing.

With a huge range of standard products and the ability to design and make application specific designs, you can be sure Mayr will have the perfect product for your equipment. Please contact us to discuss your requirements.

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