Specifications

Step angle 1.8 degree
The very suitable stepper motor for 3d printer
Reprap nema17 stepper 42byghw

Stepper motors are different from DC motors in that they have to be pulsed to move in set increments. That means you can't simply hook them up to a power supply to make them go, but they have other advantages, like accurate positioning (1 pulse=1 increment of movement), and lots of low-speed torque (ability to twist things). The flip side is that they are power-pigs, but ya gotta love this sort of pig!

Sourced by Phidgets, this larger 3303 NEMA-17 stepper motor produces a whopping 4800g*cm (66.7in*oz) of holding torque. To control this type of motor you'll need a circuit that has 4 or more mosfets, a Dual H-bridge, or a specifically designed Stepper driver.

If you're connecting it to a 1063 - PhidgetStepper Bipolar 1-Motor or similar controller, use this table to connect the motor wires to the board connectors to get clockwise rotation. To wire for counter-clockwise rotation, swap the Red and Blue wires. Please note: Connecting the motor directly to a power supply will destroy the motor and void the warranty. If you want to check your motor make sure it is connected to a constant current / chopper drive controller.

Wire Color	Black	Green	Red	Blue
Board Connector	A	B	C	D

 

 

Note: This is not the internal wiring of the stepper which is usually has A & C and B & D labels tied together, but to be clear the Black & Green wires are connected to one coil in the motor and Red and Blue the other. Datasheet available under documentation tab.

Features:

• Very High Torque
• NEMA-17 Bipolar 4-wire
• Step angle: 1.8°
• Holding Torque: 4800g-cm @ 2.5 Amps

Specifications:

Characteristic	Value
Step Angle	1.8°
Step Accuracy	5%
Holding Torque	4800g-cm / 66.66 oz-in
Coil Resistance	1.25 Ohms
Rated Current	2.5 A
Motor Height	48mm
Motor Length and Width	42mm
Mounting Plate Size	NEMA-17
Shaft Diameter	5mm
Shaft Length	22mm
Weight	332g
Number of Leads	4

 

 

 

 

 

 

 

 

 

 

 

 

 

Note: Make sure to unplug the power cord from the your driving circuit before switching wires around.