Microstepper Motor

  • Holding Torque up to 5,700 Once-Inches
  • Nema 08 to 42
  • 1.8 and 0.9 Degree Options
  • Up to Four Stack Lengths, squared-Bodied Design
  • Four, Six or Eight Lead Wires, or Conduit Boxes
  • Several Windings in Each Frame Size
The Stepper Motor product line ranges from the smallest 08Y series with 2.5 ounce-inches of torque, to the largest 42K series, with up to 5,700 ounce-inches of torque!
  • Torque up to 1,575 Once-Inches
  • 1.8 Degree, Round Bodied, “Legacy” Motors
  • Nema 23 to 42
  • Up to Three Stack Lengths
  • Several Windings in Each Frame Size
  • Six or Eight Lead Wires, or Conduit Boxes
  • Torque up to 17 Ounce-Inches
  • Diameters from 15mm to 57 mm
  • Step Sizes Ranging from 7.5 to 18 Degrees
  • Brushless, Permanent Magnet Design
  • Compact Size, High Precision
  • Ideal for Medical Semiconductor, Pumps, Robotics, and Rotary Applications
The Permanent Magnet Stepper Motor is used when low power consumption, precision and reliability are required. It is compact in size, lightweight and low noise.
  • Torque up to 1,575 Once-Inches
  • 1.8 Degree, Round Bodied, “Legacy” Motors
  • Nema 23 to 42
  • Up to Three Stack Lengths
  • Several Windings in Each Frame Size
  • Six or Eight Lead Wires, or Conduit Boxes

Frequently Asked Questions

What temperatures are stepper motors able to run at?
Most stepper motors are made with Class B insulation. This allows the stepper motor internal wiring to sustain temperatures of up to 130° C. With an ambient temperature of 40° C, the stepper motor has a temperature rise allowance of 90° Celcius. Stepper motors can run continuously at these temperatures.

What applications would a bipolar stepper motor be used for?
A bipolar stepper motor is best used in a situation that would require high torque at low speeds.

What is the difference between a Unipolar and a Bipolar stepper motor?
The main difference between unipolar and bipolar stepper motor is the center tap connections. A unipolar motor is wound with six lead wires, each of these having a center tap. These would be used in applications needing high torque with high speed. Whereas a bipolar stepper motor has four lead wires but has no center tap connections. Bipolar stepper motors are used when you require high torque at low speeds.

What applications would a unipolar stepper motor be used for?
A unipolar stepper motor would be best used in an instance where you would require a motor with high speed and high torque.

What is a stepper motor?
A stepper motor is a brushless DC electric motor that works by dividing a full rotation into a number of equal steps. The motor can be stopped at any of the steps without any feedback sensor as long as the motor is accurately sized for the application.

What is the difference between a closed loop and an open loop stepper motor controller?
In an open loop stepper motor controller, there is no feedback going from the motor to the controller, so the controller cannot make any necessary adjustments. This type of controller is effective when the motor is bearing a constant load at a consistent speed, in which case few if any adjustments will ever be necessary. In applications with a variable load or speed, a closed loop motor controller, where feedback is sent back to the controller for adjustments, may be preferable. When an open loop controller is suitable, it is often preferable because of its low cost and lack of complexity.

When should I use microstepping?
microstepping is used in applications requiring the motor to operate at less than 700 PPS. At low pulse rates, stepper motors to less smooth and often vibrate.

What is a unipolar stepper motor?
A unipolar stepper motor is one of the two basic types of two phase stepper motors. The unipolar motor has one winding with a center tap per phase. Typically the center tap is made common, giving three leads per phase and six leads for the typical two phase motor. Mostly these two phase commons are internally joined making the motor have five leads. A micro controller or stepper controller can be used to control drive transistors in the right order, creating an ease of operation making the unipolar stepper motor the cheapest way to gain precise angular movements.

What is a bipolar stepper motor?
A bipolar stepper motor is a type of two phase stepper motor that has a single winding per phase. The current in t5he winding of this type of motor needs to be reversed in order to reverse a magnetic pole, thus making the drive control on bipolar stepper motors much more complicated. The winding's of a bipolar motor are used much more efficiently that that of the unipolar motors, they are much more powerful than a unipolar motor of the same size.

What is a brushless DC motor?
A brushless DC motor also referred to as electronically commutated motors are a type of synchronous motor that is powered by a DC electric source by way of a integrated inverter. This inverter will produce an AC electric signal to drive the motor. Additional sensors will control the inverter output. Brushless motors are often referred to as stepper motors, however stepper motors are designed to be frequently stopped at predetermined intervals and angular positions.

What is the difference between a closed loop stepper motor controller and an open loop stepper motor controller?
Whereas with a closed loop motor controller feedback is sent back to the controller for adjustments, feedback is not being sent from the motor back to the controller with an open loop motor controller. This makes open loop controllers preferable for applications in which the motor is bearing a load at a constant and consistent speed. In such cases as these, adjustments should rarely be necessary. Closed loop controllers are more suited to applications in which load and/or speed varies.

What do Stepper Motor brakes do?
Brakes only hold the shafts of the motor in place, they do not slow it down. The brake is "released" if 24V is supplied to the brake and the motor shaft is free to spin. If 24V is not supplied to the brake, it will lock in position, and hold the motor shaft in place.

What is a stepper motor?
Stepper motors are DC motors that turn in distinct steps. At every step the motor holds its position needless of power, thus eliminating the necessity for feedback positioning sensors, so long as the motor is properly sized and no steps have been skipped. The removal of feedback requirements and the digital nature of a stepper motor makes it simple to integrate into digital systems.

What are the differences between Step and Servo motors?
Step motors are permanant magnet motors that 'Step' one increment each time the computer gives its control electronics one pulse. These motors do not need position feed back (if run within their limits). When stopped they automatically hold their position. Servo motors are DC motors with an encoder feedback loop. The computer reads the position of the motor and controls the power that is applied to the motor. Servo's move faster point to point and are better at accelerating heavy machinery. They have more power at high speeds than a stepper motor, and can spin much faster, generally 3000-6000 rpm. A step motor has lots of low speed power, however it should not be run faster than 800 rpm since torque falls off quickly. A Servo system knows where the machine is while cutting, and knows whether the motor is under heavy load or an axis has jammed and will stop the machine. A stepper system does not have feedback and does not know whether or not it has jammed or lost position. In this aspect, a servo is more reliable. Step motors are just as accurate as Servo and, additionally, are simpler and maintance free in harsh and/or dusty applications. The Servo motor's encoder, however, is succeptable to dirt and vibration causing problems.

What is stepper motor resonance?
Resonance refers to an unstable condition while running a step motor. Resonance often occurs between 2-4 rev/sec, and can be alleviated in many situations by placing a load on the motor, changing from full stepping to half or micro-stepping, and/or increasing your acceleration through the resonance zone.

What is the maximum speed of a stepper motor?
Modern stepper motors can reach rotation speeds of up to 1500 RPM, taking into consideration that the motor torque curve decreases considerably with the increasing of the step frequency. If a screw of 4 mm is run at 1500 RPM, we obtain a displacement speed of 1500*4mm=6000mm/min or 6 m/min. Therefore, in practice, the stepper motors runs at max 600 RPM because the torque decrease above that values.

What is a stepper motor controller?
A stepper motor controller, commonly referred to as a motion controller, is a system that controls the rotation of motors with the purpose of moving a mechanical component to a determined position. Motion controllers should not be confused with motor drivers, which are the power component of a positioning system. The leaders are those systems based on a PC that give the signals for the motors through the parallel port.

Can I operate one or two relays at the same time as I operate a stepper motor?
If you are operating one stepper motor using a board which has the GenStepper firmware installed, and if that motor does not require use of the double current operation mode, then it is possible to operate up to 2 relays at the same time as you operate the stepper motor.

I need to add a gearbox to a stepper motor that I have purchased from another company. How do I go about it?
Because motor manufacturer's specifications vary, the best way to select a gearbox for your stepper motor is to refer to Required Motor Data To Mount Gearboxes, to verify critical dimensions and optional features required. The link for this Data drawing is located on each gearbox page.

What frame sizes do the High Torque Stepper Motors come in?
Our NEMA Frame sizes range from 08-42 for our High Torque Stepper Motors.

What is the IP65 Rated Sealed Stepper Motor protected against?
The IP65 is a rating of its protection. The "6" tells us it is completely sealed from dust. The "5" means that its is resistant to jets of water from any angle.

What type of environments are ideal for Stepper Motors that are IP65?
Stepper Motors that are IP65 rated for harsh environments. These IP65-rated stepper motors meet the splash-proof requirements of most applications with humid or damp environments.

Are the Shafts sealed on the IP65 Stepper Motors ?
Yes, the sealed shafts add protection for the stepper motors, which allows for longer life cycles.

Can you provide a custom IP65 stepper motor?
Special shaft modifications are available, as well as cable, connector and encoder adders.

Can IP65 stepper motors come in higher IP ratings?
Yes, they can come in higher IP ratings. It is recommended that customers call in and discuss application requirements.

Stepper Motors Unipolar vs. Bipolar
Unipolar – A unipolar driver’s output current direction cannot be changed. Bipolar – A bipolar driver’s output current direction can be changed. 100% of the winding is utilized in the bipolar drive.

How fast can I run my step motor?
Most stepper motors are designed for low speed (3000 rpm or less) operation. Once you get into higher speeds, servo motors are typically used.

How fast can our stepper motors run?
Most stepper motors are designed for low speed (3000 rpm or less) operation. Once you get into higher speeds, servo motors are typically used.

What is the minimum number of steps to get the best step accuracy out of our Stepper Motors?
When running in Full Step, run motor in increments of 4 steps. This way, the motor will end in the ‘A’ position every time, which is the rotor’s natural position.

What are the six types of stepper motors that we sell?
The six different types of stepper motors that we carry and sell are High Torque (Square) Stepper Motors, Standard (Round) Stepper Motors, Permanent Magnet(PM) Stepper Motors, IP65 Rated Seal Stepper Motors, Stepper Motors with Integrated Drivers, and Stepper Motors with integrated Drivers and Controllers.

How can 4 wire, 6 wire and 8 wire stepper motors be connected?
First of all two drivers exist Unipolar and Bipolar, Unipolar drives output to 6 leads of a step motor and Bipolar output to 4 leads of a step motor. So a 4 lead motor can only be connected to a Bipolar driver. A 6 lead and 8 lead motor can either be connected to a Unipolar driver and or a Bipolar driver. A wiring diagram shows the possible connections.

How many electrical phases are in a stepper motor?
The number of electrical phases in a stepper motor is defined as the number of independent winding coils being used.

Which Stepper Motors are compatible to stepper motor drIver DPD?
The stepper motor driver is compatible to high-torque stepper motors, consider our popular 23Y, 34Y, 42Y. Or standard torque (round-bodied) motors: 23W, 34W, 23D, 34D, and 42D.

Out of all the different types of stepper motors we sell which one(s) are not bought from Anaheim Automation?
From all the types of stepper motors we sell 5-Phase Stepping Motors is the only stepper motor that is not an Anaheim Automation brand.

What and how many shaft options are there for Standard (Round) Stepper Motors?
There are only two shaft options to choose from. They're Single and Dual Shaft options available.

What are the available frame sizes for IP65 Rated Sealed Stepper Motors?
The available sizes that we sell are NEMA 17,23,34, and 42.

Which stepper motors do we sell are made for harsh environments?
The two stepper motors we sell that are made for harsh and humid environments are IP65 Rated Stepper Motors and Stepper Motors with Integrated Drives and Controllers.

Which type of stepper motor(s) has the least amount of frame options?
The stepper motor with the least amount of frame options is Stepper Motors with Integrated Drivers and Controllers. It has only two frame options; NEMA 17 and 23.

Which 5-Phase Stepper Motor series has a hollow shaft?
The only 5-Phase Stepper Motor that is hollow is the AHK series.

Is software included with the Stepper Motor with Integrated Drivers and Controllers?
Yes. Easy-to-use, Free software with a purchase.

Which stepper motor(s) are our lightest in terms of weight.
Our lightest stepper motors weighs in at 0.02 lbs. They are MMAA-TSM15-180-12-12V-007A-PINS and MMAA-TSM15-180-12-12V-007A-LW4.

Which stepper motor(s) are our heaviest in terms of weight.
It is MMAA-42Y312S-LW8 that weighs the most among all stepper motors. It weighs a total of 26 lbs.

Which stepper motor(s) is splash-proof?
There is only stepper motor that is consider splash-proof that we have are our IP65 Rated Sealed Stepper Motors.

Which stepper motor(s) have a round body type?
From the different types of stepper motors that we sell of them only two have a round body type. They are Standard (Round) Stepper Motors and Permanent Magnet (PM) Stepper Motors.

Which is the easiest way to tell the difference between a High Torque and Standard Stepper Motor?
The easiest way to tell the difference by just looking at them is to look at the body shape. The High Torque Stepper Motors are square while the Standard are round.

What drivers are compatible for the 08Y series of the High Torque Stepper Motors?
The compatible drivers that we carry for the 08Y is the MBC15081 driver and the MBC25081TB driver.

What are the only available frame sizes for our Stepper Motors with Integrated Drivers and Controllers?
The only available frame sizes are NEMA 17 and 23.

What is the step angle of a Standard Round Stepper Motor?
The step angle for all standard stepper motors (that means all series as well) is 1.8°.

What types of 5 Phase Stepper Motor Drivers does Autonics carry?
Autonivs has to different types of 5 phase drivers available, Multi Axis and standard. Both types of 5 Phase stepper drivers offer very similar features.

Does Motion Marketplace offer any kind of motor controls?
Motion Marketplace offers numerous variations of motor controls such as 5 Phase Stepping Drivers, Stepping Motor Controls, Brushless Controllers, Hitachi VFDs, Stepper Controller and Indexers, Stepper Motor Drivers with and without Controllers.