NEMA 17 Stepper motor

NEMA 17 Stepper motor

A NEMA 17 stepper motor is a stepper motor with a 1.7 x 1.7 inch (43.2 x 43.2 mm) faceplate. The NEMA 17 is larger and generally heavier than for example a NEMA 14, but this also means it has more room to put a higher torque. However, its size is not an indication of its power.

Suppliers

Below is a non-exhaustive list of possible motors and suppliers.

Tested

You are welcome to add information on a stepper motor/vendor you encounter, but please add only steppers which were tested to actually work on some printer.

Manufacturer	Model	Holding torque	Rated voltage	Shaft	Stepping angle	Motor length	Additional notes	Vendor (shipping location)
Kysan	42BYGH4803 (SKU 1124030)	54.0 N·cm	4.2 V	Ø 5 mm single	1.8°	48 mm		Kysan (CN) XYZPrinters (NL)
Kysan	42BYGH4803-DC (SKU 1124090)	54.0 N·cm	4.2 V	Ø 5 mm single	1.8°	48 mm	Same as 42BYGH4803, but with flat on the shaft.	3D Maker World (US) Ultibots (US)
Rebranded Longs Motor ?	17HS1011-20B	28.0 N·cm	4.8 V	Ø 5 mm single	1.8°	34 mm	Also with flat on the shaft available.	RobotDigg (CN)
Rebranded Longs Motor ?	17HS3001-20B	40.0 N·cm	2.0 V	Ø 5 mm single	1.8°	40 mm	Also with flat on the shaft available.	RobotDigg (CN)
Longs Motor	17HS4417	40.0 N·cm	2.6 V	Ø 5 mm single	1.8°	40 mm		2PrintBeta (DE) Charlie's 3D Technologies (BE)
Mercury Motor	SM-42BYG011-25	23.0 N·cm	12 V	Ø 5 mm single	1.8°	34 mm	Rated voltage higher than ideal for running on 12 V current chopping drivers.	Abra (US & CA) Akizuki Denshi Tsusho (JP) Australian Robotics (AU) Cool Components (UK) MindKits (NZ) Robot Gear (AU) SparkFun (US)
RB Step Motor	17HD2038E	45.0 N·cm		Ø 5 mm single	1.8°			EckerTech (CA)
Reprap Austria	17HS19-1684S	55 N·cm	2.8 V	Ø 5 mm single	1.8°	47 mm	Custom model, includes 100cm leads and molex plug.	Reprap Austria (AT)
SOYO	SY42STH47-1206A	31.1 N·cm	4.0 V	Ø 5 mm single	1.8°	40 mm		Pololu (US) Watterott (DE) Zapp (UK)
SOYO	SY42STH47-1504A	55.0 N·cm	2.8 V	Ø 5 mm	1.8°	47 mm	Flat on the shaft.	LulzBot (US)
SOYO	SY42STH47-1684A	43.1 N·cm	2.8 V	Ø 5 mm single	1.8°	48 mm	Some vendors have longer than standard cables.	3Distributed fabberworld.com (CH) LDO Motors (CN) Paoparts (FR) Zapp (UK)
SOYO	SY42STH47-1684B	43.1 N·cm	2.8 V	Ø 5 mm double	1.8°	48 mm	Same as SY42STH47-1684A, but double shaft.	LDO Motors (CN) Mendel-Parts (NL) Zapp (UK)
Trinamic	QSH4218-51-049	49 N·cm		Ø 5 mm	1.8°	47 mm	Tested on MakerBot Cupcake CNC	Reichelt (DE)
Wantai	42BYGH W811	47.0 N·cm	3.1 V	Ø 5 mm	1.8°	48 mm	Variant with flat on the shaft available.	Cubic-Print (DE) electronic-things (DE) Phidgets (US) RepRap teile (DE) ReprapWorld (NL)
Wantai	Custom for QU-BD	49.0 N·cm	3.6 V	Ø 5 mm single	1.8°	48 mm		QU-BD (US)
Custom	Unknown	32.4 N·cm		Ø 5 mm single	0.9°	43 mm		MatterHackers (US)

Not tested

Manufacturer	Model	Holding torque	Rated voltage	Shaft	Stepping angle	Motor length	Additional notes	Vendor (shipping location)
Lin Engineering	417-11-48-02	7.0 N·cm		Ø 5 mm	1.8°	28 mm	May be too weak.	Alltronics (US)
Lin Engineering	4018X-07-04	11.0 N·cm		Ø 5 mm	1.8°	26 mm	May be too weak.
Lin Engineering	4118L-25P-07R0	48.5 N·cm		Ø 5 mm	1.8°	48 mm		Alltronics (US)
Nidec Servo	KH4248-B95101	48 N·cm		Ø 5 mm single	1.8°	48 mm		Mechapro (DE)
Oriental Motors	PX243M-03AA	20.0 N·cm		single	0.9°	42 mm		Interinar Electronics LLC (US)
Oriental Motors	PX243M-01AA	15.0 N·cm		Ø 5 mm single	0.9°	33 mm	Not strong enough for direct drive extruder. Uses Imperial #4-40 TPI mounting holes instead of M3 metric. (Web page says no longer available; suggests RepRap builders use PX243M-03AA instead.)	Interinar Electronics LLC (US)
Oriental Motors	PKE245DA-L	1555.0 N·cm		Ø 5 mm single	1.8°	47 mm	Made in Japan.	Oriental motor (JP/US)
Rugao Xinhe	17H185H-04A	43.8 N·cm	2.8 V	Ø 5 mm single	1.8°	42 mm		AusXmods (AU)
Rugao Xinhe	17H185H-04B	43.8 N·cm	2.8 V	Ø 5 mm double	1.8°	42 mm		AusXmods (AU)
SANYO DENKI (Japan)	KH42KM2R001	45 N·cm		Ø 5 mm
Wantai	42BYGH W811	47.0 N·cm	3.1 V	Ø 5 mm	1.8°	48 mm	Variant with flat on the shaft available.	Cubic-Print (DE) electronic-things (DE) Phidgets (US) RepRap teile (DE) ReprapWorld (NL)
Wantai	Custom for QU-BD	49.0 N·cm	3.6 V	Ø 5 mm single	1.8°	48 mm		QU-BD (US)
Custom	42BYGH404	31 N·cm		Ø 5 mm single	1.8°	49 mm		MPJA (US)

Shinano Kenshi

If you have a Shinano Kenshi motor in your hands, you can decode the part number written on it with the SKC Stepping Motor Part Number decoder at Shinano Kenshi: "Stepping Motor Operation & Theory".

RoboDigg

RoboDigg 17HS1011-20B

According to the increasing request of building 3D Printers, RobotDigg customized produce two models NEMA 17 Stepper Motor which are very suitable for 3D printers like Makerbot and Reprap to utilize the NEMA 17 stepper motors, with a competitive price for small bulk order. According to the supplier, these two stepper motors are particularly manufactured for 3D printers in a very compact size with long lead wires or plug for prelong request.

17HS1011-20B

• 200 steps per revolution (1.8°/step)
• 2 Phase Bipolar, 4 Wires
• Rated Voltage 4.83V DC
• Rated Current 0.84A
• Phase Resistance: 5.75 Ω ± 10% (20º C)
• Phase inductance: 9.3 mH ± 20% (1kHz 1 V rms)
• Holding torque: 0.28 N·m Min.
• Shaft diameter: 5mm / 0.188" (3/16")
• Shaft length: 20mm
• Motor depth: 34mm
• Available at: RoboDigg

17HS3001-20B

• 200 steps per revolution (1.8°/step)
• 2 Phase Bipolar, 4 Wires
• Rated Voltage 2V DC
• Rated Current 1.2A
• Phase Resistance: 1.7 Ω ± 10% (20º C)
• Phase inductance: 4.5 mH ± 20% (1kHz 1 V rms)
• Holding torque: 0.4 N·m Min.
• Shaft diameter: 5mm / 0.188" (3/16")
• Shaft length: 20mm
• Motor depth: 40mm
• Available at: RoboDigg

LDO Motors

LDO 42STH47-1684A

NEMA 17 (42MM) size hybrid stepper motor with followed main performance, widely used in 3D printer / CNC industrial.

42STH47-1684A

• 200 steps per revolution (1.8 deg/step)
• 1.68 A/phase
• Phase resistance: 1.65 Ω
• Phase inductance: 2.8 mH
• Holding torque: 5.0 Kg·cm (50N·cm)
• Shaft diameter: 5 mm or 6.35mm
• Shaft length: 24 mm or customize
• Motor body length: 48mm
• Datasheet
• Available at: LDO Motors

Lin Engineering

Lin Engineering is one of the few manufacturers that make stepper motors in the US. If you have one of their motors in your hands, you can decode the part number written on it with the "Lin part number system" decoder on p.1 and p.2 of the Lin Engineering Catalog. Page 9 of the Lin Engineering catalog explains the part numbering system for all Lin Engineering stepper motors.

4118S-62-07

Lin Engineering 4118S-62-07

This is an awesome little NEMA 17 stepper motor. It is the primary motor used on the Cupcake CNC. It has good torque and a small size.

• 200 steps per revolution (1.8 deg/step)
• 2.5 A/phase
• Phase resistance: 0.6 Ω
• Phase inductance: 0.93 mH
• Holding torque: 3240 g·cm (~31 N·cm)
• Shaft diameter: 0.190" (4.83 mm)
• Shaft length: 0.50" (12.7 mm)
• Motor depth: 1.34" (34 mm)
• Datasheet

Name	Pololu pin	Color
A	2B	Red
B	2A	Blue
C	1A	Green
D	1B	Black

External References

• Stepper motor