Electromagnetic brake ROBA-stop M®

Product overview
The ROBA-stop M® is a shaft-mounted electromagnetic safety brake designed for standard electric motors. A wide range of sizes, rotor designs and options allows configuration for static holding or dynamic braking tasks. A sealed-housing option is available up to IP66 and a Cold Climate Version (CCV) supports operation down to −40 °C.

Key highlights

• Shaft-mounted motor safety brake
• Multiple rotor types and size range (small to very large frames)
• Sealed housing option up to IP66

Product features

• Mounting position
  • Mounting on the free shaft end
• Application
  • Shaft-mounted motor brake for holding and emergency stop braking
• Duty cycle
  • Permitted for 100% duty cycle (depending on configuration)
• Safety
  • Fail-safe principle
  • Suitable for emergency-stop applications
  • Switching condition monitoring (optional)
• Design
  • Electromagnetic, various rotor materials (friction-lining, metal, fibre composite)
• Additional options
  • Cold Climate Version (CCV) to −40 °C
  • Wear monitoring
  • Customer-specific flange plate
  • Anti-condensation heating
  • Double-rotor design
  • Special friction materials
  • Backlash-free option
  • Special coil voltages
  • Lockable hand release
• Assembly & maintenance
  • Easy mounting
  • Low maintenance

Variants and applications

• ROBA-stop M® Eco
• ROBA-stop M® Servo-Pitch (pitch drives for wind turbines)
• ROBA-stop M® CCV (Cold Climate Version)
• Dynamic brake (regular dynamic braking)
• Holding brake (high holding torque for emergency stops)

Configurator — key tables (extract)
Table: Sizes 2 / 4 / 8 / 16 / 32
Size | 2 | 4 | 8 | 16 | 32
Braking torque M_N [Nm] | 2 | 4 | 8 | 16 | 32
max. speed n_max [min^-1] | 6,000 | 5,000 | 4,000 | 3,500 | 3,000
min. hub bore d_min [mm] | 8 | 10 | 11 | 14 | 19
max. hub bore d_max [mm] | 15 | 15 | 20 | 25 | 30
Outer diameter D [mm] | 81 | 92 | 108 | 134 | 154

Table: Sizes 60 / 100 / 150 / 250 / 500 / 1000 / 2000 (example)
Size | 60 | 100 | 150 | 250 | 500 | 1000 | 2000
Braking torque M_N [Nm] | 60 | 100 | 150 | 250 | 500 | 1,000 | 2,000
max. speed n_max [min^-1] | 3,000 | 3,000 | 4,200 | 3,600 | 3,000 | 2,500 | 2,500
min. hub bore d_min [mm] | 22 | 24 | 30 | 40 | 50 | 75 | 80
max. hub bore d_max [mm] | 35 | 45 | 50 | 60 | 80 | 90 | 110
Outer diameter D [mm] | 174 | 206 | 227 | 266 | 318 | 392 | 460

Rotor / braking torque options

• Dynamic brake: suitable for regular dynamic braking — braking torque approx. 0.7 to 1,400 Nm; max speed 2,500–6,000 rpm
• Holding brake: suitable for occasional dynamic braking / emergency stop — braking torque approx. 4 to 1,800+ Nm; max speed 1,500–6,000 rpm
• Friction lining rotor and fibre composite rotor for lower torques; metal rotor for higher torques (see configurator)

Certifications

• ATEX
• CSA
• UL

Technical data (excerpt)

• Brand: mayr®
• Commercial name / model: ROBA-stop M®
• Type: Electromagnetic, spring-applied, shaft-mounted safety brake
• Mounting: On the free shaft end
• Protection rating: Sealed housing up to IP66 (option)
• Duty cycle: Configurations available for 100% duty
• Safety principle: Fail-safe
• Special features: wear monitoring, anti-condensation heating, double rotor, customer-specific flange, lockable hand release, Cold Climate Version to −40 °C

Downloads
Product sheets, catalogues, installation and operating instructions and CAD files are available in multiple languages via the product downloads section.