AC Tech Drives Lenze Americas


Home   >   Products   >   INTORQ   >   BFK461   >   Spring-Operated Brakes

Lenze Group

The INTORQ range of spring-applied brakes is being expanded with the addition of the new BFK461 series of sealed designs. This brake has been specifically developed for application areas with high enclosure requirements. It is a self-contained system available in seven sizes and with braking torques of 4-235 Nm is ideal for use in wind power plants, cranes and textile machines.

Lenze INTORQ BFK461 Spring-Applied Brakes 4-235 Nm Distributors


Operating Instructions

INTORQ BFK461 spring-applied brakes are single-disc brakes with two friction surfaces. When de-energised, several compression springs are used to generate the braking torque through friction locking. The brake is released electromagnetically. During braking, the compression springs use the armature plate to press the rotor (which can be shifted axially on the hub) against the counter friction face.

If you are looking for INTORQ BFK461 Brakes, please call us at (844) 331-9371 or email us at we will do our best to help you find the INTORQ BFK461-06 spring-operated brake that you are looking for at the most competitive prices possible. If you are searching for INTORQ BFK461-08 brakes technical information (data-sheets) please use the datasheets or product selection guide page links.


  • Spring-applied brake, sealed design, IP65 enclosure
  • Designs with and without flange
  • Long maintenance intervals

When the brakes are applied, an air gap sair is present between the armature plate and the stator.

Fields of Application:

  • Brake motors
  • Wind power plants
  • Car wash systems
  • Cranes
  • Hoists
  • Textile machines

The stator's coil is energised with DC voltage in order to release the brake.

A Powerful & Complete Range:

  • 7 sizes
  • Standard voltages 24-V, 103 V, 180-V, 205 V
  • Torque range 4 - 235 Nm

The resulting magnetic force works against the spring force to pull the armature plate towards the stator.


  • The insulation system to temperature class F (155°C) ensures that the winding has a long service life
  • These brakes are designed for 100% operating time (current applied to the brake)

This relieves the spring force on the rotor which can then rotate freely.

Ready for Operation Immediately:

  • Preset air gap, quick and easy mounting
  • Special machining of the friction surfaces ensures that the characteristic torques are achieved after very few switching operations.
  • No fixed bearing is required on the brake

Whether we have INTORQ Spring-Operated Brakes in stock in Boise, Idaho or need to ship direct from Lenze to any USA cities; ACTECHDRIVES.COM can get INTORQ BFK461-10 brake to you fast and save you some money. Our industrial factory automation supplies distributors warehouse stocks some Lenze AC Tech products enabling us to further assist you in finding the correct INTORQ BFK 461-12 brakes in the USA, Canada, or Mexico. It will be very helpful if you have the INTORQ BFK 461-14 brake part numbers ready, then our sales representatives can provide you with a pricing and availability quote for INTORQ BFK 461-16 brakes that you are looking for in seconds. If you do not have the part numbers for INTORQ BFK 461-18 spring operated brake, our application engineers will be able to help you figure out the part numbers and get the price quote to you as soon as possible.

Stock Check
Part No:

Search Tips
Can't find a part number?
E-mail Us!

Vogel Gearboxes

Servo Gearboxes are increasingly in demand in numerous fields of machine and plant construction. The Oberboihingen-based gearbox specialist Vogel Antriebstechnik has played a major role in this development, having been committed to this highly precise and efficient technology from an early stage. Now, Vogel is publishing a catalogue that focuses solely on servo products for the first time.

Lenze Accessories

The Use of a Mains Choke slightly reduces the mains voltage at the Mains choke input of the inverter - the typical voltage drop across the mains choke at the rated values is around 4%. In the course of the product update, we have revised and simplified the assignments of the inverters. Hence, we can provide a uniform assignment for all inverters of our product range. This makes it easier for the customer to select