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Electromagnetic Brakes (E.M.)

Miki Pulley is a manufacturer of premium clutches and brakes that are used in a range of high-performance applications within various motion control industries worldwide. With decades of experience, our designs have been tested and refined for unparalleled quality and reliability.

What are Electromagnetic Brakes?

Electromagnetic (or EM) brakes are electrically actuated but are specifically designed to halt & hold torque mechanically. EM brakes utilize an electromagnetic field produced by the internal stator coil. Depending on type and design, the EM field either engages or disengages mechanical components.


Electromagnetic Clutch Brake Performance Factors

Certain factors can influence precise performance. Temperature extremes can impact the amount of torque created by an EM brake. Please check each product's rated temperature to ensure proper operation in your environment. Dust, debris, and moisture exposure on friction surfaces will also impact performance.

Electromagnetic Braking System Applications

Electromagnetic brakes are used in a wide range of applications. Some of the common uses include:
  • Linear Motion Z-axis
  • Robotics
  • Automated Guided Vehicles (AGV’s)
  • Servo and Stepper Motors
  • Factory Automation Equipment
  • Packaging and Food Processing Equipment
  • Material Handling Equipment
  • Gaming Equipment
Most EM brakes use a single friction surface to slow or stop motion, but other configurations are available such as toothed-type or multi-disc style. Please contact us directly to assist in selecting the optimal choice for your application.

Electromagnetic Brake Considerations

Important considerations in selecting the right brake for your application include:
  • Performance (halting, holding, or both)
  • Type (power-on, power-off engaged)
  • Torque
  • RPM
  • Mechanical input & output
  • Size & type
  • Mounting style

Electromagnetic Brake & Disc Options

Miki Pulley manufactures electromagnetic braking options in several styles and configurations to meet various industry requirements. Mounting options include shaft-mounted and flange mounted. Power-on engaged brakes also feature different armature styles.  

Spring Actuated Brakes

Spring Actuated Brakes function as power-off engaged; when no voltage is applied to the coil, the brake halts and holds rotation. Power-off engaged functionality is achieved by internal compression springs that push the armature plate into the friction disc to stop and hold the rotor disc. This brake style provides exceptionally stable and reliable holding force and is ideal for long-term holding applications, especially important for applications involving battery power.
Miki pulley provides spring actuated EM brakes in different variants, including slim profile / low-weight designs.  Our larger standard brakes are rated up to 55Nm. The spring actuated brakes offer practical solutions for standard and emergency braking and holding applications and operate in ambient temperatures between -10°C and 40°C. (14°F to 104°F)

Electrically Actuated (Power-On) Brakes

Electrically Actuated (Power-On) Brakes are ideal for applications requiring quick stops and are offered in shaft or flange mounting styles. Typical applications include printing, paper processing, packaging, and textile applications.
Our 111 model provides a standard configuration with three armature options, and the BSZ model offers a slimmer profile design and two armature styles.
Our Actuated Brakes are suitable for operating ambient temperatures between -10°C and 40°C. (14°F to 104°F), feature a zero backlash design and provide rated torque up to 320Nm depending on the model selected.

Electromagnetic Micro-Brakes

Electromagnetic Micro-Brakes have a compact design for small precision equipment such as ATMs, copy machines and optical machines, where fluctuations in torque and response cannot be tolerated.
Miki Pulley EM Micro-Brakes are available in three different armature options, are a zero-backlash design, and provide friction torque up to 2.4Nm. They are suitable for operating ambient temperatures between -10°C and 40°C. (14°F to 104°F).

Electromagnetic Clutch/Brake Combo Units

We also offer electromagnetic clutch and brake combination units, available in eight different configurations with torque ratings up to 320Nm. Our EM Clutch / Brake combo units include fully enclosed models, dual-clutch and brake models, and models including a motor and reducer.

Contact Miki Pulley for Electromagnetic Braking, Disc & Clutch Options Today

Miki Pulley offers Electromagnetic Brakes and Clutches in a range of options with custom configurations available. Contact us at 800-533-1731 to discuss your application or request a quote today.