Brushless Servo Motors – a Complete Solution


Jayashree offers a complete solution with a brushless servo motor, encoder, AC vector control servo drive and optional brake in 30 W – 3000 W range. We work with OEMs to design and deliver a solution that meets their electrical and mechanical design specification.

230V Servo Drive & Servo Motor

230V Drive & Motor

The 230 V AC fully digital servo drive can be used to drive motors up to 400W for applications that require very precise position control and a fast response time.

Servo systems can be used in solar applications, antennae positioning, printing and packaging machines, CNC machining, factory automation, and robotics, and any other application that requires precise control over speed and position. Their main advantage over traditional DC or AC motors is the addition of motor feedback. This feedback can be used to detect unwanted motion, or to ensure the accuracy of the commanded motion. The feedback is provided by an encoder.

Servo Motor with integrated drive

Motor with integrated drive

Integrated low voltage servo drive & motor offers a very compact solution to many motion control problems in a wide variety of applications such as packaging, diamond cutting & polishing, embroidery machines, wood working machines, etc.

Simply provide 48/60 V DC power along with pulse & direction signals to operate and control the motor.

Eliminates unnecessary cables and clutter inside the machines and a separate panel to house the drives is no longer required.

Precise Control

State-of-the-art, closed-loop, AC vector servo gives you smooth, quiet and repeatable motion and control of position, speed & torque in any direction.

High Performance

Performance in a Small Package

Jayashree servo motors deliver great performance due to their characteristics of high peak torque, high continuous torque and high rated speed— with a low cogging torque.

  • High peak torque is achieved by using sintered Neodymium-Iron-Boron permanent magnets—not plastic-bonded Neodymium—and by optimizing skew angle and maximizing winding fill factor.
  • High continuous torque requires a motor that can manage heat. Tightly filled stator windings are designed to avoid build up of hot spots in the motor. The thermal design ensures even and easy heat dissipation. The Class-F (155ºC-rated) winding insulation protects the motor during long operating cycles, and there is no significant deterioration of the magnetic properties of its sintered rare earth magnets.
  • Jayashree servo motors show a flat torque curve over a wide range of speeds.

Smooth Performance

Many brushless motors have the problem of a high cogging or detent torque (Detent torque is the amount of torque that must be applied to a motor to overcome the static (magnetic) equilibrium of the motor when it is in an unpowered state of rest).  They also often have significant distortion in their back-EMF signature which leads to high torque ripple.

  • Jayashree brushless servo motors are designed for smooth operation with a low cogging / detent torque and a linear, low-ripple torque output.
  • Each rotor is individually balanced for a smooth performance at all speeds.
  • High quality sealed ball bearings complement the other design features to make a high performing motor.

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