I am using a TB6600 at 2 amps and 36 volts and get over 1,000 rpm but have to use an acceleration curve as the motor won't go from a dead stop to that rpm without stalling.

Nema 17 Stepper Motor Bipolar 2A 59Ncm(84oz.in) 48mm Body 4-lead 3D Printer/CNC

Nema 17 Stepper Motor Bipolar 2A 59Ncm(84oz.in) 48mm Body 4-lead 3D Printer/CNC

Q: What are the recomended volts and amps for max torque?

The torque in a stepper motor is proportional to the current. For the motor in question, the max current is shown as 2A. The winding resistance is given as 1.4 ohms per phase which works out the 2.8 Volts (2 amps x 1.4 ohms). However, this is not the end of the story. In order to achieve the 2 amp rating once the motor is in motion, requires a much higher supply voltage than 2.8 Volts. This is because once the motor moves, it generates a internal voltage that subtracts from the supply voltage. Additionally, the motor winding inductance prevents the current from rising immediately. To counteract these two forces, you need to apply a much higher voltage to the motor to force the current to the desired level. Using a modern stepper driver that provides adjustable current limiting makes this easy. The overdrive voltage needed will depend on the maximum voltage that the driver can handle, the insulation breakdown voltage of the stepper motor, and the desired speed you need reach. A good starting point is 10 X the value obtained by looking at the the winding resistance and maximum current ratings. In this case 2.8V (see above). That would imply that an overdrive voltage of 28V would be reasonable to use. If you chose this voltage, make sure the stepper driver can handle it. Also make sure your power supply can supply the current. You can back this value down as needed if you don't have to run a very high speeds. Hope this helps you out.

Q: Will this stepper motor work as a replacement for a soyo sy42sth47-1504a used in the lulzbot mini 3d printer?

Based on my review of the two sets of specs, my answer is, this motor will PROBABLY work as a replacement. The physical dimensions and the step angle are a match. This motor requires somewhat more current and has slightly more torque. Unless I missed an important detail, I believe that these motors will work.

Q: Is the 2A max/peak? What's an expected normal amperage?

2A is rated current, we recommend you drive this motor with rated current.

Product ID: 234208694

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Details

Brand
STEPPERONLINE
Voltage
12 Volts
Horsepower
1.4 Horsepower
Product Dimensions
42W x 42H
Material
As shown in

⚡2.0A rated current

💪59Ncm (84oz.in) high holding torque

📏Compact 48mm NEMA 17 size

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Description

⚙️ Elevate your 3D printing game with torque that means business!

PLUG PLAY READY - Includes 1m cable with 0.1" pitch connector for quick, hassle-free integration.
COMPACT YET MIGHTY - Standard NEMA 17 form factor fits seamlessly into your existing setups without bulk.
TORQUE THAT COMMANDS - 59Ncm holding torque ensures your projects stay rock-solid, no slipping or stalling.
POWER PACKED PRECISION - 2.0A current delivers consistent, reliable torque for flawless 3D printing and CNC control.
ENGINEERED FOR ENDURANCE - Built by STEPPERONLINE with premium materials to keep your machine running smooth and steady.

The STEPPERONLINE NEMA 17 Bipolar Stepper Motor offers a robust 2.0A current and 59Ncm (84oz.in) holding torque in a compact 48mm body. Designed for 3D printers and CNC machines, it features a 4-lead design with a 1m cable and 0.1" pitch connector, ensuring easy installation and reliable performance for professional-grade precision.

Specifications

Brand	STEPPERONLINE
Voltage	12 Volts
Horsepower	1.4 Horsepower
Product Dimensions	42W x 42H Millimeters
Material	As shown in the image
Item Weight	0.88 Pounds
Shaft Diameter	5 Millimetres
Manufacturer	STEPPERONLINE
UPC	191388825313 798167993654 191579035491 701056358779 190657686020 712322835252 789164236554 715624560631
Model number	17HS19-2004S
Colour	As shown in the image
Number of Memory Sticks	1
Item Weight	399 g
Item model number	17HS19-2004S
Power Source	corded electric
Included Components	1
Are batteries included?	No

Have a Question? See What Others Asked

What are the recomended volts and amps for max torque?

Will this stepper motor work as a replacement for a soyo sy42sth47-1504a used in the lulzbot mini 3d printer?

what is the rpm?

Is the 2A max/peak? What's an expected normal amperage?

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