42 57 86 Differences between stepper motors

Source:Industry News     Release time:2022-03-07     Clicks:     Popular:Reduction motor manufacturer

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Stepper motors are specialized motors designed to precisely control position and speed. Its working principle is to use electronic circuits to convert direct current into time-sharing power, multi-phase sequential control current, and use this current as a stepper motor power supply. The stepper motor can work normally, and the driver is a time-sharing power supply and a multi-phase sequence controller for the stepper motor. Let me introduce to you the differences between 42, 57 and 86 stepper motors.


42 stepper motor refers to a stepper motor with a mounting base size of 42mm, and its maximum output torque is 0.5NM;

57 stepper motor refers to a stepper motor with a mounting base size of 57mm and a maximum output torque of 3.0NM;

86 stepper motor refers to a stepper motor with a mounting base size of 86mm, which is a high-precision motor.


42 series two-phase stepper motor parameters:

Step accuracy 5%

Temperature 80℃ Max

Ambient temperature -20℃—50℃

Insulation resistance 100M Ω Min 500VDC

Withstand voltage 500V AC 1 minute

Maximum radial runout 0.02mm (450g load)

Maximum axial runout 0.08mm (450g load)


57 series two-phase stepper motor parameters:

Insulation resistance 100M Ω Min 500VDC

Withstand voltage 500V AC 1 minute

Maximum radial runout 0.02mm (450g load)

Maximum axial runout 0.08mm (450g load)


86 series two-phase stepper motor parameters:

Step accuracy 5%

Temperature 80℃ Max

Ambient temperature -20℃—50℃

Insulation resistance 100M Ω Min 500VDC

Withstand voltage 500V AC 1 minute

Maximum radial runout 0.02mm (450g load)

Maximum axial runout 0.08mm (450g load)


The above content is an introduction to the differences between 42, 57 and 86 stepper motors. The biggest feature of the stepper motor is its "digitization". For each pulse signal sent by the controller, the stepper motor is driven by its driver. If a series of pulses are received, the stepper motor will continuously run the corresponding distance. At the same time, the motor speed can be directly controlled by controlling the frequency. Because the working principle of stepper motors is easy to learn and use, has low cost (compared to servo), and the motor and driver are not easily damaged, it is very suitable for microcomputer and microcontroller control applications.


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