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Stepper Motors for Low Cost and Low Maintenance

Stepper motors are known for several advantages. This low cost and low maintenance device can produce high torques even during startup phase or at low speed. A typical step motor is able to operate in open loop control systems and in most types of environments, and is less likely to slip or stall. Its relatively simple construction and ruggedness makes maintenance cheap and easy, too. For applications where cost is a concern, a DC stepper motor can be used for motion control.

Stepper Motors Defined

Stepper motors are electromechanical devices that generate mechanical movements by converting electrical pulses. Digital pulses make them work instead of continuously applied voltage. Hence, unlike typical continuously rotating electric motors, stepper motors step or rotate in fixed angular increments. They are typically used for applications where costs are a major factor and position control is crucial, like in linear actuators, mirror mounts, goniometers, and rotation stages, as well as in commercial products like slot machines, plotters, printers, camera lenses, 3D printers, and CNC machines. A design that consists of a stepper motor, driver, and controller system ensures that the stepper motor will abide by digital instructions.

Stepper motors typically consist of a shaft, stator and rotor laminations, copper and lead wires, bearings, magnets, washers, and end and front covers. The shaft is usually made of stainless steel metal, and the rotor and stator laminations are made of silicon steel, which is known for superb electrical resistivity to lower core loss. Magnets are supplied in different types to suit various applications, but they are usually Nd-Fe-B bonded, ferrite sintered, or ferrite plastic magnets.

There are three basic types of stepper motors: permanent magnet, variable reluctance, and hybrid NEMA stepper motors. A variable reluctance stepper motor has multiple soft iron rotors and a wound stator, large step angles, and provides no detent torque. A permanent magnet stepper motor has a rotor that is made up of a permanent magnet. Hybrid NEMA stepper motors are a combination of VR and PM stepper motors and can be applied to a wider range of applications, including CNC equipment. These are the basic reasons why stepper motor are preferred over other traditional motors.

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A Motor to Meet All your Industrial Applications: NEMA 42 Stepper Motors

NEMA 42 stepper motor is the largest stepper motor of the stepper motor family. This is known to be the finest type of stepper motor. It has the unique features of both, permanent and variable reluctance motor. It is an electronically driven motor, and it is used in the robotics industry and many other industries. The stepper motor is mainly used in the applications where precise and efficient motion control is required whether the motion is linear or rotational. In case of rotational motion, when it receives digital pulses in an accurate sequence it allows the shaft of the stepper motor to rotate in discrete step increments.

Industrial Applications of NEMA 42 Stepper Motor:

Robotics Industry:

NEMA 42 stepper motor is widely used in the field of robotics as it provides high torque and has the quality to work for precise control. Nowadays as the world is getting dependable on the technology robotics industry has got a great chance to grow. The growing field of robotics is partially dependable of NEMA 42 stepper motor for their growth, as it is the best electrical motor to be used for the robotics applications.

CNC Industries:

CNC (Computer Numeric Control) industries are those who manufactures CNC equipment like CNC routers, CNC milling machine, and various other CNC products. These equipment are computer controlled devices that are used for cutting applications. These applications also require precise control and hence NEMA 42 Stepper motor is highly preferred electrical motors for CNC applications.

3-D Printing or Rapid Prototyping Industries:

3-D printers requires precise control and accuracy for their operation and hence these type of printers use NEMA 42 Stepper motors. These motor provide a high level of precision because of the direct relationship between the rotation angle and the input pulse. They can be paused, and the direction of rotation can be reversed with a great precision, making the NEMA 42 Stepper motor an excellent component to be used for rapid prototyping applications.

The above paragraphs clearly explains that the NEMA 42 Stepper motors finds a wide application in the fields where precision and accuracy is required.

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