Wittur Tools
Gearless synchronous traction machines


Flat design for MRL and MR solutions; rope tension in all directions



  • For fast lifts with an excellent ride comfort
  • High efficiency, reduced power consumption, extreme low-noise level
  • Rope tension in all directions
  • Solid construction for permissible shaft loads FS at the traction sheave up to 55kN
  • Safety brake system with electro-magnetical release, multi-pole spring-operated brakes, contacts for brake control
  • EC type-examination certificate according to EN81-20/50, can be used for UCM solution
  • Interchangeable traction sheave, positive locking with rotor, groove profiles according to lift system
  • Synchronous motor, 22-pole, with high-efficiency permanent magnets, insulation class 155 (F), temperature control, terminal box
  • Inverter compatible measuring devices
  • Degree of protection IP41
  • Variable options regarding voltage, speed, torque, measuring system and traction sheave parameters

Content of Supply

  • Synchronous lift drive with brake system, traction sheave, measuring system (encoder)
  • Two- or Three-Brake system (option according appliction)
  • Mechanical evacuation system (option)
  • Remotely controlled bowden cable for brake (option)
  • Selectable encoder system (option)
  • Connecting cable for encoder, motor and brake (option)
  • Selectable colouring (option)
  • All technical documents necessary for approval and detailed operation manual
  • UL/CSA execution (option)


Technical sheet


Suspension 2:1 Rated Load up to [kg] 1.600
Rated Speed [m/s] 0,63 ... 2,5
Suspension 1:1 Rated Load up to [kg] 800
Rated Speed [m/s] 1,0 ... 5,0
Shaft load up to [kN] 55
Traction sheave diameter [mm] 340, 400
EU Type examination certification EU-BD 715
UL/CSA approved yes
Motor synchronous,
22 poles
Dimension (approx.) [mm] 836 x 720 x 404
Weight (approx.) [kg] 298 ... 420