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5 PCS Nema17 for 1.7A,4200g.cm,48mm length,2-Phases,0.9°,42BYGHM809 Wantai Motor  342-194-6073

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15-26 days
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EMS 5-16 days
UPS/DHL/Fedex IE/Fedex IP 3-7 days

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Product Details

This Item includes:

5 PCS Nema 17 for 1.7A ,4200g.cm,48mm length,4-Lead,2 phase Bipolar Connection Stepper Motor

1, Stepper Motor

Technical Specifications

Part No.: 42BYGHM809

Frame Size: NEMA17

Step Angle: 0.9 degree

Voltage: 2.8V

Current: 1.7 A /phase

Resistance: 1.65Ohm/phase

Inductance: 4.0mH/phase

Holding torque: 4200g.cm 60oz-in

Rotor inertia: 68 g -cm2

Detent torque: 0.22 g -cm

Number of wire leads: 4

Weight: 0.34 kg

Length: 48 mm

Motor shaft : 5mm

Front shaft length: 20mm

Introduction :

DQ420MA is a type of two-phase hybrid stepping motor driver, the drive voltage of which is from 12VDC to 36VDC. It is designed for use with 2-phase hybrid stepper motor of all kinds with 20mm to 42mm outside diameter and less than 2.0A phase current. This circuit that it adopts is similar to the circuit of servo control which enables the motor to run smoothly almost without noise and vibration. Holding torque when DQ420MA driver runs at high speed is also significantly higher than other two-phase drivers, what's more, the positioning accuracy is also higher. It is widely used in middle and big size numerical control devices such as curving machine, CNC machine, and computer embroider machine, packing machines and so on.


l High performance, low price

l Average current control, 2-phase sinusoidal output current drive

l Supply voltage from 12VDC to 36VDC

l Opto-isolated signal I/O

l Over-voltage, under voltage, over-current, phase short circuit protection

l 8 channels subdivision and automatic idle-current reduction

l 8 channels output phase current setting

l Offline command input terminal

l Motor torque is related to speed, but not related to step/revolution

l High start speed

l High holding torque at high speed


Electrical specification:

Input voltage


Input current


Output current

0.44A- 2.83A




Working Temperature -10~45

Stocking Temperature -40~ 70


No condensation, no water droplets


Prohibition of combustible gases and conductive dust



1. Pins assignments and description:

1) Connector Pins Configurations

Pin Function



Pulse signal, PUL+ is the positive end of pulses input pin

PUL- is the negative end of pulse input pin


DIR signal: DIR+ is the positive end of direction input pin

DIR- is the negative end of direction input pin


Enable signal: ENA+ is the positive end of direction input pin. This signal is used for enabling/disabling the driver. High level for enabling the driver and low level for disabling the driver.


ENA- is the negative end of direction input pin. Usually left unconnected (enabled)


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