Spring-applied brake - Intelligent design

Convincing performance in its most compact form

Our INTORQ BFK551

With the new INTORQ BFK551, we are taking our product portfolio in the field of small, compact spring-applied brakes to a new level.

Compact size
The new BFK551 upgrades our range of compact spring-applied brakes to a new level. The BFK551 offers the market significant improvements and added flexibility in terms of performance and customization compared with equivalent brake models.

Superior alternative
With its space-saving size, the BFK551 can be easily integrated into new and existing drive solutions. The special housing design significantly increases the friction radius, which makes the BFK551 the more powerful solution compared with competitors’ products.

Intelligent design
Recesses in the brake housing allow the connecting cables to be conveniently routed along the outside of the housing. The cable exit is equally ingenious and ensures that the minimum circumscribed circle (MCC) of the brake remains unchanged irrespective of the mounting direction.

Future-proof quality
Optimized subassembly prefabrication and final assembly at the customer’s site guarantee sustainable future-proof quality. Our international network of production plants and service facilities ensures excellent global reach and availability – wherever you are in the world.

Features at a glance

  • Dynamic or holding brake with emergency stop function
  • Compact design with rotor and flange
  • Fully assembled with integrated Torx® mounting screws
  • 5 different brake sizes
  • Brake torques between 0.24 and 4 Nm
  • UL-listed insulation system
  • Simple brake installation on motor shaft
  • Factory-set air gap – secured against accidental adjustments

Optional versions

  • Different hub bore diameters per size
  • Manual release for sizes 03/04/05

Technical Details

Size 01 02 03 04 05
Height 31.1 mm 31.2 mm 31.8 mm 31.8 mm 34.8 mm
Power 5.2 W 6.2 W 9.3 W 10.9 W 12.4 W
Brake torque 0.24 Nm 0.5 Nm 0.5 / 1 Nm 1 / 2 Nm 2 / 4 Nm
Supply Voltage 24 VDC 24 VDC 24 VDC 24 VDC 24 VDC

Downloads

Brochures and Flyers
Brochure | INTORQ BFK551 | Spring-applied brake
PDF - 2 MB
PDF - 2 MB
Operating instructions
Operating instruction | INTORQ BFK551
PDF - 2 MB
PDF - 2 MB
CAD Files
3D-Models | INTORQ BFK551
ZIP - 25 MB
ZIP - 25 MB

Video - New spring-applied brake INTORQ BFK551

The new INTORQ BFK551 spring-applied brake is now available on the market. With its sophisticated and space-saving design and torques from 0.24 - 4 Nm, it is perfect for small motor applications. Watch this video to find out more about the benefits of the brake.
Industrial Brakes
Sales Team Kendrion INTORQ Aerzen

Visit us on our fairs!

Meet us at LogiMAT 2026-
Kendrion offers a comprehensive portfolio of future-proof solutions for efficient and smooth material flow in logistics:

- Swing drives for continuous material flow
- Safety solutions for shuttle systems and cobots
- Electromagnetic pallet stoppers
- High-performance brakes for industrial trucks
- State-of-the-art control technology for logistics

Visit us and experience our braking, holding and control solutions live in operation in the cobot.
Hall: 1, Booth: Gallery, Booth 1GA35.
Messepiazza 1
70629 Stuttgart
Germany
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