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Your cart is empty. This high torque and precision bipolar Nema 17 stepper motor with 0.9° step angle (400 steps/revolution). Each phase draws current 2A, allowing for a holding torque of 46Ncm(65.1oz.in).
Electrical Specification
* Manufacturer Part Number: 17HM19-2004S
* Motor Type: Bipolar Stepper
* Step Angle: 0.9°
* Holding Torque: 46Ncm(65.1oz.in)
* Rated Current/phase: 2.0A
* Phase Resistance: 1.45ohms
* Recommended Voltage: 12-24V
* Inductance : 4.0mH±20%(1KHz)
Physical Specification
* Frame Size: 42 x 42mm
* Body Length: 48mm
* Shaft Diameter: Φ5mm
* Shaft Length: 24mm
* D-cut Length: 15mm
* Number of Leads: 4
* Lead Length: 500mm
* Weight : 370g
Connection:
Black(A+), Green(A-), Red(B+), Blue(B-)
Warning:
Make sure the motor connect to a constant current or chopper drive controller before you test motor.
Connecting the motor directly to a power supply will destroy the motor.
A.
Reviewed in Germany on February 7, 2025
Erste Testläufe super, gute Verarbeitung. Alles sehr passgenau.Motor hat keinen vorgefertigten Stecker, was völlig in ordnung ist da ich so oder so eigene Stecker verwende.Anleitung mehrsprachig (auch deutsch) ist dabei.Belastung und Laufzeit wird sic zeigen 🫵
vaskap
Reviewed in Sweden on January 11, 2025
Good!
Martin
Reviewed in Spain on July 6, 2024
Funciona perfectamente, pero no sé si es que me he liado yo, o es que el esquema del cableado está mal.Al final, simplemente he invertido la lógica del motor en Klipper y arreglado.
1
Reviewed in the United States on August 28, 2023
says nowhere in the description that it is open ended, assumed it would come with a 4 pin jst but nope. Spliced it to some spare cables I had with some wire nuts, I'll go back and solder them once I get some sleeves.Had to fiddle with the wiring. for some reason I had to wire B- to 2B, B+ to 2A, A+ to 1A, A- to 1B on my SKR 1.4 TMC2209, following the wiring of my old stepper that worked. Still had to invert the directions in the firmware.still messing around with stealthchop, but out of the box, on a 12v power supply, these things are stupid loud. if anyone has working stealthchop settings for them on 12v, please put them on the marlin github.
Evan Gordon
Reviewed in the United States on November 17, 2023
The motor seems fine, I just got it today. If using for a 3D printer (such as my ender 3 running the latest marlin on an BTT SKR 1.4 Turbo main board) you will need to ensure the wiring is correct as the motor comes with bare wires and no connecter.The motor came with an information card that lists BLK (black), GRN (green), RED, BLU (blue) as A, A, B, B respectively. This also corresponds to A+, A-, B+, B- in other associated data sheets, respectively. With a small pick you can de-pin your existing connectors from your old motor connectors to the main board, snip, strip, and solder theses wired pins onto the wires of the new motor and re-pin the connector with the wires from your old motors connector.When I followed the data card I kept getting errors in my terminal on pronterface ( motor coil shorted) and even blew a fuse on my board (no big deal thats what they're for) but thanks to another commenter I re-pinned the motor so that black goes to 1B, green to 1A, red to 2B and blue to 2A. This worked but required me to reverse the motor direction in the marlin firmware (#define INVERT_Z_DIR true). I imagine reversing the A group and B group in the connecter might counter this but I havent tried as its easier for me to just change a false to a true in the firmware and recompile.I attached the photo of the card with the corrected labels and a copy of my board connector for reference as most boards use a similar four pin connecter layout. My driver is a TMC2209 stepper driver. I will expand upon my review if I come across and issues or other useful information.
Andrew Dance
Reviewed in the United States on September 1, 2022
A quality item at a great price
Jeff Xu
Reviewed in the United States on May 18, 2022
Added these to my Ender 3 and it drastically reduced the amount of vertical banding artifacts on my prints.I had to modify my printer for them to fit and replace the X and Y steppers, so they aren't drop-ins, but well-worth it for the extra trouble, just remember to also reflect the amount of steps per rotation in your config file.
customer 5492053
Reviewed in the United States on July 5, 2021
If you're considering this motor for the 3.0mH inductance rating look elsewhere. I ordered 3 and the spec sheet that came in the boxes states 4.0mH. I sent a query to OMC support and they confirmed that the 4.0mH rating is correct. They said "The inductance is actually 4mH±20%. 3mH is the previous parameter. Later we made changes to the motor".The change from 3mH to 4mH results in a calculated top speed for a printer with 16 tooth 2GT pulley and 24V PSU of 150mm/s down from 200mm/s before back EMF causes torque loss. Very significant.For the price there are better options.As of posting this review omc-stepperonline website page for this motor has been updated, but this Amazon page still has the old and better 3.0mH spec listed.
Gianluca Vianello
Reviewed in Italy on March 24, 2021
Ne ho acquistati due per sostituire i due motori originali X e Y di una Alfawise U30 pro.La versione da 0,9°/400passi è molto piu precisa, e facendoli lavorare a 2.0A sono molto potenti.A mano mentre girano non si riesce fermarli.Sono leggermente più rumorosi degli originali, ma forse è solo perchè fanno un rumore diverso.
Taylor Mertlich
Reviewed in the United States on February 11, 2021
This stepper motor has been going strong with daily use for a couple of months now. The only issue is that it makes an almost musical tone as different voltages are applied to adjust the speed of the motor. I can't determine if its my controller or the motor, so they both get to share the blame.
Customer
Reviewed in the United States on December 6, 2021
I updated my K40 with this motor after I had some steps start to jump around. It is quite as a church mouse and runs smooth as my fingers thru your moms hair. Get it don’t hesitate. I would have swapped mine straight out of the box if I would have know how great this thing runs. Increases my cut speed and accuracy.
Jean-Philippe Dos Santos
Reviewed in France on January 11, 2020
Moteurs reçus hyper rapidement et très bien emballés. Produits conformes à la description. Je recommande et recommanderait des articles chez ce vendeur. 👍
Kate G.
Reviewed in the United States on December 21, 2019
I keep buying more of these. Good precision, good strength. I currently use 5 of these on a modified cr-10 with a Duet Maestro controller board.
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