GS-775M Micro DC 24V 20000RPM 775 Motor, Double Ball Bearing, High Power, Noise Suppression, DC Motor Driver for Electrical Tools DIY…

I don't own the Genmitsu CNC mill that these motors are intended for, although, I wouldn't mind having one! I'm using this motor for a different project. I bought 9 motors altogether. One of them is for a spare. The remaining 8 will be installed into a scale model radio control car that looks similar to the Bonneville Streamliners that you see setting land speed records at the Bonneville Salt Flats. However, this car is much smaller and radio controlled, it is about 5 feet long, but looks much like the cars it is patterned after, most notably the Challenger II driven by Danny Thompson.I've modified the motors for this application, but on the outside, they look just like the original. Prior to taking them apart, I tested each one and they perform as stated at slightly over 20,000 rpms at no load with 24 volts applied. I've modified the brushes. I've also rewound and balanced the armatures. I've removed the plastic fan that is inside the motor as the car will have a special cooling system for the motors. It only has to run at full throttle for about 10 seconds. I don't dare free wheel the motors at 24 volts now as they would spin way too fast. It is only safe to run them at full throttle/voltage while under a load in order to keep the rpms at a safe level. While powering the car, they will probably be spinning at about 25,000 rpms at full speed. Under no load with 10 volts applied, the motors spin at 35,500 rpms. This is why I don't dare put 24 volts to them with no load applied. When powering the car, they will be run at 24 volts and possibly at 32 volts if needed. The current record for a radio controlled car is 202 mph and was set back in 2014. I hope to break that record this coming summer in 2021.-Maurice Randall

De acuerdo a pedido

I did this upgrade on my 3018 CNC, and am very pleased with the improvement. I can now get much higher RPM, and in turn, better quality cutting at faster speeds. This is especially true for routing PCBs, where higher speed helps improve the quality of the traces. The motor is an exact fit replacement. From a noise perspective, it's hard to tell but seems like about the same level of noise as the prior motor though the pitch is different (no real change that concerns me).Note that you will need to move your collet from the prior motor to this one, and that can take a bit of force to get off. Also make sure to tell GRBL that you have a higher RPM motor if you want your speeds to be somewhat accurate ($30=20000). Note that this doesn't actually change the motor speed, it simply tells GRBL what speed the motor is turning at when at full speed so you can say "S20000" for full speed, and "S10000" for half speed.For the money, this is a great upgrade. It isn't going to turn your 3018 into a high end mill by any means, but it help's a lot when higher speeds are needed.

very loud at 10000, but when you try higher than 15000 it feels like the world will end or something really bad is going to happen from the noise.also at the start and before it turns off it gets even more louder, i'm not sure if i got a defective one or they are all this way, it's just can't be used from the noise.i will return it and keep the stock one, it works fine.

Well built but LOUD.. Customer service is outstanding. Issues have been resolved and will definitely continue to work with this company for future orders.

Does what it says. In fact I measured the RPM with a phototach and it somewhat exceeded the spec, at 22400RPM while making a light cut. Same torque as standard motor, just faster speed, which might be useful in some circumstances, eg getting acrylic chips out of the way quickly so they don't overheat. Some people have noticed that the inrush current on spinning up exceeds their PSU's capacity but it worked fine with the supplied PSU for me. If this happens to you, just ramp it up 5000RPM at a time with a small delay between each speed. Note that the noise reduction means electrical noise reduction, not acoustic volume - this is a loud spindle! Overall does what it promises but most folks won't really have a use for the extra speed.

What is all the voltage info or the correct cord for this i got a 24V cord for it, its acting like its the wrong voltage please help

The media could not be loaded. I put this motor in my 4040 PRO CNC machine with a 1/4" ball nose bit. When I started the machine to check the positioning without a piece of wood. Just wanted to see the CNC run for a minute to verify my gcode file was going to perform the cut I designed. What I encountered was the motor was vibrating and noisy. After a few seconds it would seem to correct itself stop vibrating and become quieter. Then it would switch back to noisy and vibrating. With the motor stopped I moved the bit down and next to a piece of wood. Manually rotating the bit I could observe that one bit flute would just touch the wood and the opposite flute would not. There was a visible gap.