STEPPERONLINE Nema 17 Stepper Motor Bipolar 2A 59Ncm(84oz.in) 48mm Body 4-lead W/ 1m Cable and Connector compatible with 3D Printer/CNC
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A stepper motor's torque is proportional to its current. The maximum current for the motor in question is listed as 2A. The winding resistance is given as a number of one. Each phase has a resistance of 4 ohms, resulting in a total resistance of 2 ohms. 2 amps x 1 volt = 8 volts 4 ohms). However, the story does not end here. Once the motor is running, a much higher supply voltage than 2 is required to achieve the 2 amp rating. 8 Volts. Because the motor generates an internal voltage that is subtracted from the supply voltage when it moves, this is the case. Furthermore, the inductance of the motor windings prevents the current from rapidly rising. To counteract these two forces, a much higher voltage must be applied to the motor in order to force the current to the desired level. This is made simple with the use of a modern stepper driver with adjustable current limiting. The required overdrive voltage is determined by the driver's maximum operating voltage, the stepper motor's insulation breakdown voltage, and the desired speed. A good starting point is to multiply the value obtained from the winding resistance and maximum current ratings by ten. In this instance, 2. 8 volts (as stated previously). As a result, a 28V overdrive voltage would be appropriate. Make sure the stepper driver can handle this voltage if you choose this option. Check that your power supply can handle the current as well. If you don't need to run at very high speeds, you can reduce this value as needed. I hope this has been of assistance to you.
This motor will PROBABLY work as a replacement, based on my review of the two sets of specs. The physical dimensions and step angle are exactly the same. This motor uses a little more electricity and produces a little more torque. Unless I overlooked something, I believe these motors will function properly.
I'm using a TB6600 at 2 amps and 36 volts, and I'm getting over 1,000 rpm, but I have to use an acceleration curve because the motor won't go from a complete stop to that rpm without stalling.
The rated current for this motor is 2A, and we recommend that you use it.
Selected User Reviews For STEPPERONLINE Nema 17 Stepper Motor Bipolar 2A 59Ncm(84oz.in) 48mm Body 4-lead W/ 1m Cable and Connector compatible with 3D Printer/CNC
For NEMA 17, this is a VERY powerful unit. I was prepared to redesign for a Nema 23 because the old Nema 17 I had was a toy, but that was completely unnecessary. This motor is genuine and capable of powering a wide range of 3D printers, CNC routers, and other machines. I ran it at 36 volts and 1 amp and it remained warm, not hot. DISPROVING MYTHS br>br> br>br>WIRE COLOR IS ALWAYS MEANINGLESS (as I'm sure other reviewers have discovered): Spinning the shaft will reveal pairs. When you touch two wires together, they will spin again - It's a pair if spinning it's more difficult. The other two are a pair of - It's that easy. It's not uncommon for the color of motor wiring to be meaningless. Furthermore, dismantling your motor will almost certainly ruin it. br>br>THE HEAT IS OK: Heat is causing a lot of hysteria, in my opinion. In essence, the motors can get quite hot, which is perfectly fine. If you can't keep your finger on it for more than a second without getting burned - it's too hot. If that's the case, it's far too hot. CHANGING THE DIRECTION OF SPIN: br>br>CHANGING THE DIRECTION OF SPIN: br>br>CHANGING THE DIRECT ANY ONE OF THE PAIRS MAY BE FLIPPED. The motor will reverse its direction of rotation. Nothing is likely to change if both pairs are flipped. When you switch pairs from A to B, the direction changes as well - However, to change the direction, you only need to flip one pair.
Excellent packaging, excellent motors; however, the wires did not match the documentation. It's possible that you'll have to rely on trial and error (don't rely on the 1A, 1B, 2A, 2B wiring comment they made in response to another customer's question). br>br>I spent way more time than I'd like to admit getting these to work, so here's what you'll need:
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I bought a pair to replace one of my Ender 3's failed steppers. br>br>While the seller claims that these are "plug and play," they actually require a little more effort. br>br>Because the leads are hard wired into the stepper, you'll need to remove the stock cable and plug the stepper's wires directly into the main board. br>br>The steppers themselves are also twice the size of a stock Ender 3 stepper, which causes a number of issues. When a print is started, the back left leveling screw will collide with the stepper. This can be corrected by bringing the Y axis limit switch closer to the printer's front. The issue is that you've lost about three inches of print volume as a result of this. br>br>The X axis is fixed in height, and these steppers will not fit. I'm not sure you could use one of these to replace the X stepper. br>br>As a result, while they're attractive, they're too large for an Ender 3 and should be avoided.
On my 2nd printer, I had a geared extruder. 3D printer with a filament diameter of 85mm. The extruder was powered by a standard 40mm NEMA 17 stepper motor, and I was having problems with skipped steps when trying to extrude 2. The filament is 85/3mm. Because of the extra torque required for the larger diameter filament, I had to push the motor currents of that 40mm motor above the rated amps, and I was still getting skipped steps. br>br>I chose this stepper motor because it has a higher current limit and torque rating than my 2. Titan-style extruder with a diameter of 85mm. This engine has performed admirably. Because I'm not feeding it too much power, it runs much cooler, and I'm able to fine-tune it so that I don't have problems with skipped steps when extruding. br>br>For similar applications, I would consider purchasing this stepper motor again. I've also considered changing the y-axis on my moving y-axis. Because of the extra stress that the larger print bed places on the motors, I replaced the axis stepper motors on my 310x310mm printers with one of these. br>br>You might want to double-check the pinout in the connector to make sure it matches the outputs of your stepper driver. As a maker, I didn't think this was enough of a hit to deduct a star, especially since pinout variations appear to be common with 3D printer components even today. Just remember to keep an eye out for it.
My Prusa 3D printer was in need of a new motor. The Y axis movement was skippable and erratic. After isolating motor failure as the source of the problem (by switching the X/Y motor inputs on the printer's Raspberry Pi motherboard and observing failure of the Y motor with X commands but working X motor with Y commands), I decided that ordering a new motor would be a cheap test. The next day, I received it and simply unplugged the old Y motor lead and plugged in the new one using the clip that came with it. I fished the wiring through (wire length sufficient) and replaced the motor bolted on after it worked well through the manual command movements (no adjustments to the 4 wires' position were required for me). I wrapped and zip-tied the sample print because it was spot on. The wiring was reattached. Because it was a little longer than the stock motor, I had to adjust the Y-axis. To ensure proper alignment, adjust the belt tensioner (located at the front of the machine). After many prints, I am very pleased with the results. Everything appears to be in excellent condition. The beauty of open source hardware is that it allows you to do just that.
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