Greartisan DC 12V 2RPM Gear Motor High Torque Electric Micro Speed Reduction Geared Motor Eccentric Output Shaft 37mm Diameter Gearbox

Good value, good product. I did return the first one because it was not running smoothly. I use a 5 amp variable output power supply I bought at Amazon. I was surprised at the reduced voltage torque output for a motor that runs at less than 5 amps. As more load is applied the speed remains high. It runs slowly at three volts. At six volts the rpm is about half the rated speed, but the torque is more than half the rated torque, or so it seems to me. At full voltage and a decent torque output, they don't overheat. I used them to make a linear sander for making wooden gears, using a pair of linear rails. Without these motors, I couldn't have done it so easily and inexpensively.

Works just fine. I needed a DC motor for my DIY project and I see no issue's with this motor. up to 15 kg torque.

These are solid little motors and I love that you can buy them in all different gear ratios. I am using mine in an animated art sculpture. It slowly spins a fairly large armature made of PVC pipes. The piece will be outside. In calm winds the motor seems to handle the load just fine. The question is if the internal gears (don't know if they are metal or plastic) will hold up when stronger breezes try to oppose the motion of the motor. Right now I really like these.

I built a filament respooler that called for a 100RPM motor. (not pastamatic, the original one) I bought the recommended motor but it was loud and to be honest, a bit slow for my tastes. I found this motor which is faster and quite a bit quieter. (by no means quieter, just a lot quieter than the other motor I used) I am guessing the noise is from the gear box. I can use full speed on my motor controller but it is a bit too fast. I can slow it way down and it still works. At a certain point, slow is just off. (pretty close to the off position) I recommend this over the motor listed on printables because it is quieter, faster and much less expensive.

This motor works pretty well but it's definitely a little faster than 100RPM. I had to make my own rpm calculator to properly measure the exact speed because it was not matching up with expectations. That's fine. The more egregious problem I'm having is that the shaft wobbles a lot. Overall not a deal breaker, just be aware of this possible defect.

I've purchased several of these in different speeds, and I'll keep buying these whenever I have new projects. Excellent durability. I've noticed the low-speed, high-torque options are quieter than the higher-speed options. They're not silent, but can be reasonably quiet.

Excelente

If you need to replace a ZGB37RG this motor works but packaging is quite foolish, because it is so short the terminals get bent, I have bought two and they each had this issue!