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.

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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: 326497340

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Details

Brand
STEPPERONLINE
Speed
200 RPM
Voltage
12 Volts
Horsepower
1.4 Horsepower
Product dimensions
42W x 42H

📏Compact 48mm body

🔌1m cable with connector

⚙️59Ncm high torque

Frequently Bought Together

STEPPERONLINE Nema 17 Stepper Motor Bipolar 2A 59Ncm(84oz.in) 48mm Body 4-Lead W/ 1m Cable and Connector Compatible with 3D Printer/CNC

HiLetgo 5pcs A4988 Stepstick Stepper Motor Driver Module with Heat Sink for 3D Printer Reprap Suitable for Mendel Huxley Arduino

ELEGOO 120pcs Multicolored Dupont Wire 40pin Male to Female, 40pin Male to Male, 40pin Female to Female Breadboard Jumper Ribbon Cables Kit Compatible with Arduino Projects

Description

⚡ Step up your build game with torque and precision that won’t quit!

PLUG AND PLAY READY - Pre-wired with color-coded leads (A+, A-, B+, B-) for quick, error-free installation in your next project.
EXTENDED CONNECTIVITY - Equipped with a 1-meter cable and 4-pin Harwin connector for seamless integration and flexible setups.
COMPACT DURABLE DESIGN - NEMA 17 standard frame with a sleek 48mm body fits perfectly in tight spaces without compromising strength.
POWERFUL PRECISION TORQUE - Delivering a robust 59Ncm (83.6oz.in) holding torque for flawless 3D printing and CNC control.
OPTIMIZED ELECTRICAL PERFORMANCE - Rated at 2.0A with 1.4Ω resistance, ensuring efficient and reliable bipolar stepper operation.

The STEPPERONLINE Nema 17 Stepper Motor is a high-torque, bipolar 2A motor designed for professional-grade 3D printers, CNC machines, and robotics. Featuring a compact 48mm body, 59Ncm holding torque, and a 1-meter cable with a 4-pin connector, it offers reliable, efficient performance and easy integration for advanced makers and engineers.

Specifications

Manufacturer	Generic
Part number	17HS19-2004S1
Item Weight	399 g
Product Dimensions	4.2 x 4.2 x 4.8 cm; 399.16 g
Item model number	17HS19-2004S
Size	1.65"x1.65"
Color	As Shown
Material	stainless steel(40%),copper wire(30%),plastics(20%),aluminium alloy(10%)
Voltage	12 Volts
Horsepower	1.4 Horsepower
Item Package Quantity	1
Speed	200 RPM
Batteries Included?	No
Batteries Required?	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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