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Motion control > 8LT torque motors

8LT three-phase synchronous motors

High-torque drives

Modern machine concepts demand dynamics and precision. The high-torque servo motor series from B&R offers a high level of dynamics and positioning accuracy with compact sizes and enables the user the highest degree of flexibility for the machine design.
8LT torque motors
Drehstrom-Synchronmotoren 8LT
Three-phase synchronous motors from the 8LT series are permanently excited torque motors for applications that require extraordinary dynamic characteristics and positioning precision as well as compact size and reduced weight. These are available in self-cooling or externally-cooled format.

 

The 8LT series torque motors provide the user with the highest degree of flexibility - the ideal basis for mechatronic and efficient machine design.

 

The short, compact design of the motors can eliminate the need for angular gears in many cases. All motor components are designed in such a way that saves maintenance.

 

This motor series features a relatively compact structure with a higher degree of rigidity and more dynamic properties as well as low detent torque. The externally-cooled format additionally ensures intensive surface cooling - the motor does not cause the environment around it to heat up.

 

The 8LT three-phase synchronous motors are designed as complete motors. Unlike built-in motors, there is no need to install bearings and encoders.

Three-phase synchronous motors from the 8LT series are permanently excited, electronically commutated synchronous motors for applications that require excellent dynamic characteristics and positioning precision as well as compact size and reduced weight.

 

  • NdFeB permanent magnets
  • Sinusoidal commutation with high resolution EnDat encoders as the feedback unit
  • Three-phase winding with star connection
  • No elasticity in the power transmission system
  • Minimum moment of inertia because of favorable rotor construction results in very good dynamic properties
  • High overload capability/peak torque
  • Low torque ripple
  • No mechanical transfer elements that are subject to wear in the power transmission system, therefore high level of availability
  • Long life-span, all motor parts except for bearings are free of wear
  • Power dissipation generated in the stator diverted directly to the flange via the housing
  • Preloaded, grooved ball bearings which are sealed on both sides and greased
  • Complete motor system with stall torque ranging from 50 Nm to 408 Nm
  • Connection using two SpeedTEC circular plugs
  • Energy savings by reducing mechanical losses
  • Control via ACOPOS servo drives (2 1251) or ACOPOSmulti drive systems
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