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High-power drives are achieving higher and higher motor speeds and drive torque levels. However, despite the increased performance requirements, the installation space allocated for brakes is actually getting smaller. The innovative multi-coil technology forms the basis for this performance class.

Lenze INTORQ BFK468 Spring-Applied Brakes Performance Standard 100-2400 Nm Distributors


Operating Instructions

INTORQ BFK468 spring-applied brakes are single-disk brakes with two friction surfaces. When deenergised, several compression springs are used to generate the braking torque through friction locking.

The BFK468 models may only be operated with a half-wave bridge rectifier. The half-wave bridge rectifiers switch from bridge rectification to half-wave rectification after a fixed overexcitation time. Terminals 3 and 4 are connected to the brake's DC circuit, while the induced voltage peak during DC operation (please refer to the circuit diagram entitled "Abbreviated switch-off times") is limited by an integrated overvoltage protection on terminals 5 and 6.

If you are looking for INTORQ BFK468 Brakes, please call us at (800) 894-0412 or email us at we will do our best to help you find the INTORQ BFK468-18 spring-operated brake that you are looking for at the most competitive prices possible. If you are searching for INTORQ BFK 468-20 brakes technical information (data-sheets) please use the datasheets or product selection guide page links.

  • Up to twice the braking torque in comparison with the BFK458
  • Fixed or adjustable braking torque
  • Fast operating times
  • Long maintenance intervals thanks to large working air gap

The brake is released electromagnetically with holding-current reduction via an INTORQ half-wave bridge rectifier. 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.

Fields of Application:

  • Brake motors
  • Cranes
  • Port facilities
  • Stage machinery
  • Storage technology
  • Escalators

When the brakes are applied, the air gap sLN is present between the armature plate and the stator. A DC voltage is applied to the stator's coil to release the brake.

A Powerful & Complete Range:

  • 4 sizes
  • Standard voltages 205/103 V, 360/180 V (release voltage/holding voltage)
  • Torque ranges from 100 to 2,400 Nm

The resulting magnetic flux works against the spring force to draw the armature plate to the stator. This releases the rotor from the spring force and allows it to rotate freely.

Low Maintenance:

  • Long rotor/hub connection with low rate of wear and tried and tested involute gear
  • Low-wear, asbestos-free friction lining comes as standard

The DC voltage is then reduced to half by the accompanying switching device. Basic module E supports the use of the torque adjustment ring to reduce the braking torque.

Torque Transmission:

  • Can be frictionally engaged during dry running
  • Special machining of the friction surfaces ensures that the characteristic torques are already achieved after just a few switching operations
  • Fixed bearing is not required on the brake

Whether we have INTORQ BFK468-25 brakes in stock in Boise, Idaho or need to ship direct from Lenze to any USA cities; ACTECHDRIVES.COM can get INTORQ BFK 468-31 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 468-18 brakes in the USA, Canada, or Mexico. It will be very helpful if you have the INTORQ BFK 468-20 brake part numbers ready, then our sales representatives can provide you with a pricing and availability quote for INTORQ BFK 468-25 brakes that you are looking for in seconds. If you do not have the part numbers for INTORQ BFK468-31 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.

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