Conical-rotor brake motors

Simple, robust and reliable

Conical-rotor brake motors

Conical-rotor brake motors

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 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

Demagcranes

29201 Aurora Road
Solon, Ohio 44139-1895
USA

Phone:
+1 (440) 248 2400
Fax:
+1 (440) 248 3874

Product information

The benefits at a glance

High-performance motor

  • Motor output up to 88 HP (55 kW)    (at 40% CDF)
  • 2, 4, 6 or 8 poles
  • Two-speed 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

Many further options and accessories

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 88 HP (55 kW): 4-pole KBA motors

 Designation Output HP [kW]
40% CDF
Braking torque
lb-ft [Nm]
KBA 71 A4 0.77 (0.48) 4.9 (6.7)
KBA 71 B4 1.15 (0.72)  6.0 (8.7)
KBA 80 A4 1.70 (1.05)  16.5 (14.5)
KBA 80 B4  2.1 (1.3)  13.0 (17.5)
KBA 90 A4  2.70 (1.65)  17.0 (23)
KBA 90 B4  3.2 (2.0)  21.0 (29)
KBA 100 A4  3.9 (2.4)  28 (38)
KBA 100 B4  4.8 (3)  35 (48)
KBA 112 B4 A  5.9 (3.6)  41 (56)
KBA 112 B4  7.2 (4.5)  50 (68)
KBA 125 B4 A  9.7 (6)  60 (82)
KBA 125 B4  12.0 (7.4)  69 (94)
KBA 140 B4 A  15.5 (9.6)  96 (130)
KBA 140 B4  18.5 (11.5)  122 (166)
KBA 160 B4  32 (20)  157 (215)
KBA 180 A4  48 (30)  246 (335)
KBA 200 B4  64 (40)  325 (430)
KBA 225 B4  88 (55)  450 (610)
Conical-rotor brake motors - Technical data

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

Designation Output HP [kW]
40/40% CDF
Braking torque
lb-ft [Nm]
KBF 71 A 8/2 0.07/0.32 (0.04/0.2) 0.81 (1.4)
KBF 71 B 8/2 0.10/0.48 (0.06/0.3) 1.2 (1.6)
KBF 80 A 8/2 0.21/0.8 (0.13/0.5) 2.0 (3.2)
KBF 90 A 8/2 0.32/1.3 (0.2/0.8) 3.2 (5.2)
KBF 100 A 8/2 0.42/1.95 (0.26/1.2) 4.6 (7.0)
KBF 112 A 8/2 0.67/3.1 (0.42/1.9) 6.6 (11.8)
KBF 125 A 8/2 1.05/4.7 (0.65/2.9) 8.6 (17)
KBF 140 A 8/2 1.8/7.2 (1.1/4.5) 14.2 (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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