OMC/StepperOnline Stepper Motor Kit Data Sheets

OMC/StepperOnline Nema 17 Stepper Motor Kit 17HS19-2004S1

Sold as "VORON 2.4 & Afterburner 3D Printer Nema 17 Stepper Motor Kit 17HS19-2004S1"

Package includes:

• 1 x Nema 17 Bipolar 1.8deg 16Ncm (22.6oz.in) 1A 3.7V 42x42x20mm 4 Wires 17HS08-1004S
• 6 x Nema 17 Bipolar 59Ncm (84oz.in) 2A 42x48mm 4 Wires w/ 1m Cable & Connector 17HS19-2004S1

Since most people are probably upgrading to StealthBurner and CW2 the single 17HS08-1004S is not needed for that mod.

I bought these from West3D for $89.99+Tax, however I have since found that OMC/StepperOnline is selling them direct on Amazon for a lot cheaper.

Electrical Specification

Manufacturer Part Number	17HS19-2004S1
Motor Type	Bipolar Stepper
Step Angle	1.8 deg
Holding Torque	59Ncm(84oz.in)
Rated Current/phase	2.0A
Phase Resistance	1.4ohms
Inductance	3.0mH ± 20%(1KHz)

Physical Specification

Frame Size	42 x 42mm
Body Length	47mm
Shaft Diameter	Φ5mm
Shaft Length	24mm
D-cut Length	15mm
Number of Leads	4
Lead Length	1000mm
Weight	390g

Connection

A+	A-
Black	Green

Resources

• Full DataSheet: 17HS19-2004S1.pdf
• Torque Curve: 17HS19-2004S1 Torque Curve.pdf

Klipper settings

According to the formula the 17HS19-2004S1 is specified with a maximum current of 2.0 Amps. Maximum run current is 2.0 * .707 = 1.414, rounded down to a maximum RMS run current of 1.4 Amps. Maximum hold current is 1.414 * 0.6 = 0.8484, rounded to a maximum hold current of 0.8 Amps.

However, that produced some very noisy motors for me, so I am currently running them as follows:

[tmc2209 stepper_x]
uart_pin: PC4
interpolate: false
run_current: 1.1
sense_resistor: 0.110
stealthchop_threshold: 0

[tmc2209 stepper_y]
uart_pin: PD11
interpolate: false
run_current: 1.1
sense_resistor: 0.110
stealthchop_threshold: 0

## this applies to stepper_z to stepper_z3
[tmc2209 stepper_z]
uart_pin: PC6
interpolate: false
run_current: 0.8
sense_resistor: 0.110
stealthchop_threshold: 9999