4-Axis Robotic Arm with NEMA 17 Stepper Motor

SKU: 101-20-172 2 reviews Variants ID: 32087284875343
$239.95 $299.99 Save $60.04

This brand new robotic arm is equipped with 3PCS NEMA 17 stepper motors. It moves and rotates much more smoothly than many other robotic arms in the market.

  • Can work with SainSmart Mega 2560 board
  • You can add a clamp on it, this requires extra servos and wire connection
  • Suitable for amateurs and who has experience in robotics.
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NEMA17 Stepper Motor: 
  • Model:  42BYGH47-401A
  • Max. Drive Current: 1.5A
  • Number of Leads: 4
  • Step Angle: 1.8 degree
  • Surface Temperature: 80 Celsius Max. (in rated current)
  • Max.Static Moment: 0.55N.M
  • Phase resistance: 1.6Ω
  • Wiring: each motor has 4 wires: red & blue; black & green


Robotic Arm:

  • Material: PVC
  • Weight: 3.5kg
  • Size:


  • 1 x 4-axis robotic arm
Customer Reviews
5.0 Based on 2 Reviews
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Motor Confusion, Type installed on arm, Correct Specs From PDF:

Motors: Step Motor 42BYGH47-401A 1.5 amp It mainly used in mechanical motion control, Like CNC milling machine, laser cutter, 3D printer, it also can used in robot platform motion control. Specification: Step Motor 42BYGH47-401A •Phase: 2 •Step Angle: 1.8° •Voltage: 24  •Phase Current: 1.5A/Phase •Phase Resistance: 1.6ohm/Phase

Initial impressions

Just opened the package up, and am very pleasantly surprised at the solid feel and how nicely this is built. I ordered 3 of sainsmart's 101=60=194 stepper drivers, and will soon be testing it out. I have to do a bit of checking the motor phases, and some miscellaneous parts gathering etc but will be ready to roll shortly. My guess is to rally up a power supply, and get all of the motor leads rung out ( ohmed out to verify I know where the coils are )and wired to the controllers. Then setting the max amp rating of the motors on the dip switches located on the driver boards I think it is 1.5 amps, but will have to double check... Then to test the strength of this baby! Tally Ho!