Conical-rotor brake motors

Simple, robust and reliable

Starting and stopping with maximum performance

Simple, robust and reliable – these are the key characteristics of our KB conical-rotor brake motors. Their unique brake operating principle eliminates the need for separate control or additional switching elements. This is due to the mechanical connection between the brake and rotor. The result:

  • particularly high braking performance
  • approval for operation with extremely high switching frequencies
  • two-speed pole-changing motors
  • drives for starting-and-stopping applications and for direct line-fed travel motions
  • resistance to temporary overload
  • KB motors can be connected to gearboxes via a coupling.

Your Contact

Demag contact

Demag Cranes & Components GmbH

Postfach 67
58286 Wetter
Germany

Phone:
+49 (0) 2335 92-0
Fax:
+49 (0) 2335 92-7676
Email:
[email protected]
Contact

Product information

The benefits at a glance

High-performance motor

  • Motor output up to 55 kW (at 40% CDF)
  • 2, 4, 6 or 8 poles
  • Two-speed pole-changing motors
  • KBA for starting-and-stopping drives
  • KBF for direct line-fed travel motions

Extremely robust brake

  • No switching elements needed
  • No separate control needed
  • Long brake lining service life thanks to effective dissipation of heat generated by the brake (through large surface area of brake cover)
  • Short overall length and good heat dissipation (brake disc simultaneously forms the motor fan)
  • Two brake disc designs – light for KBA motors, heavy and with increased moment of inertia for KBF motors
  • Extremely high switching frequency permitted
  • Resistance to temporary overload

Convenient online configuration with Demag Drive Designer

  • View technical data
  • Design support by means of 2D and 3D geometries in all standard file formats
  • Provision of electrical circuit diagrams
  • Delivery time indicator
  • Transfer selected configuration to Demag Shop
  • www.drives.demag-designer.com

Motor and gearbox combinations

Coupling connection

Gearbox and motor combinations with Demag coupling shaft end (Z cylindrical-rotor motors or KB conical-rotor brake motors) using intermediate flange and roller spider coupling

Coupling connection

Technical data

For outputs up to 55 kW: 4-pole KBA motors

 Designation  Output [kW]
40% CDF		 Braking torque
[Nm]
KBA 71 A4  0.48 6.7
KBA 71 B4  0.72  8.7
KBA 80 A4  1.05  14.5
KBA 80 B4  1.3  17.5
KBA 90 A4  1.65  23
KBA 90 B4  2.0  29
KBA 100 A4  2.4  38
KBA 100 B4  3  48
KBA 112 B4 A  3.6  56
KBA 112 B4  4.5  68
KBA 125 B4 A  6  82
KBA 125 B4  7.4  94
KBA 140 B4 A  9.6  130
KBA 140 B4  11.5  166
KBA 160 B4  20  215
KBA 180 A4  30  335
KBA 200 B4  40  430
KBA 225 B4  55  610
Conical-rotor brake motors - Technical data

Line-fed travel applications: 8/2-pole KBF motors

Designation Output [kW]
40/40% CDF		 Braking torque
[Nm]
KBF 71 A 8/2 0.04/0.2 1.4
KBF 71 B 8/2 0.06/0.3 1.6
KBF 80 A 8/2 0.13/0.5 3.2
KBF 90 A 8/2 0.2/0.8 5.2
KBF 100 A 8/2 0.26/1.2 7.0
KBF 112 A 8/2 0.42/1.9 11.8
KBF 125 A 8/2 0.65/2.9 17
KBF 140 A 8/2 1.1/4.5 24.3

 

Equipment options

Motors

Options Cylindrical-rotor motor
Z		 Conical-rotor brake motor
KB
Winding protection
PTC thermistor • •
Temperature detectors • •
Rotary encoder
Integral pulse generator • •
External pulse generator • •
Integrated external pulse generator •  
Electrical plug connector • •
Increased enclosure • •
Anti-condensation heater
Heating tape • •
Via motor winding •  
External fan
Additional integrated fan •  
Additional external fan • •
Heavy fan •  
Heavy brake disc   •
Canopy/round protection panel • •

Brakes

Options Cylindrical-rotor motor
Z		 Conical-rotor brake motor
KB
Manual brake release unit • •
Brake function monitoring •  
Brake adjustment monitoring •  
Sealed/increased enclosure •  
Various control modules •  
Enclosed brake compartment   •
Emergency-stop brake lining •  

 

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