Genmitsu Air-Cooled 300W Brush DC Spindle Motor with 0-48V Output Adjustable Switching Power Supply, 52mm Clamp & ER11 Collet, ideal for CNC Machining

If youre like me and upgrading the spindle on your cnc, youll probably be recommended this a lot, and honestly theres a reason for that, the standard motor on the cnc is 7k RPM, this is 20K and so a major improvement, if you want to feel the full effects of that, this will need its own power supply as it takes a fair bit, but it can still be ran at speed without just having less torque to it, the nut and collet provided is alright quality but safe yourself the hastle and buy one of each individually, youre buying a spindle, not those parts and so may be slightly off and make noise, which is why Ive given it a 4/5 on accuracy, as the vibration from that makes it majorly louder, as well as the added speed of course, but still having this spindle at such a low price has made milling softer materials so so much easier and better, with it even milling aluminium at a push (this is all without its own power supply like I said). So overall this spindle will get your job done, and done well at that, it is still a budget spindle, but is a damn good one and I totally recommend it.

This spindle is a great upgrade for a standard 3018 setup. No modifications are required to install it. I simply removed the stock unit and replaced it with this. I'm now able to cut twice as quickly. Very pleased with this purchase. Please note that this spindle is loud. But this is something you should expect as it's running at more than double the speed of the stock spindle.

Works well as a drop in replacement for the original that came with the CNC, it's so noisy!

These are standard motors and good to have a spare as accidents happen.

I bought this to replace the standard motor which has lasted 3 years. This new one burned out after a couple of uses whilst cutting soft material. I've tried to contact the seller but that doesn't seem possible.

Cracking little spindle

I bought this 20,000rpm spindle motor as the stock 9000rpm motor was barely fast enough for PCB isolation routing. Initially on first run up I was shocked at how much vibration and noise there was!! After investigation, this was not a fault of the motor and spindle itself, but the collet nut being out of balance. I STRESS to anyone experiencing big vibration on these motors that they try running it with the nut and collet removed!! Mine was very smooth with very little runout. After trying several nuts, only 2 out of 6 were acceptable (the others shook the whole machine ridiculously!). I do believe there are nuts with balance hoes available. Coupled with a home made soft start, I'm now really happy with the spindle, and making pcb's for fun!!

Item is good but it is the noisiest motor I have come across. So high pitched. I would advise you find another one.

Upgrade to the standard and works well

Ich hab diese Spindel für meine sainsmart Fräsmaschine gekauft. Sie passt nicht in die Orginalkunststoffhalterung, aber in die Zubehörhalterung aus Aluminium. Dann wird auch die mitgelieferte Schelle nicht benötigt. Die Beschreibung der Schnittstellen ist ausführlich und verständlich. Allerdings muß für die Verbindung des Motors mit dem Netzteil das Kabel verbunden werden. Ich hab hierfür einen Stecker angelötet. Wenn man die Drehzahl des Motors steuern möchte kann man entweder das mitgelieferte Poti verwenden, oder die Schnittstelle des Netzteils mit der Sainsmartplatine verbinden. Hierfür muß man sich ein Kabel mit den entsprechenden Steckern basteln oder nach einem passenden suchen. Auf jeden Fall kann mein Sainsmart (3018 mit Mach3) den Motor jetzt direkt steuern (an- aus - Drehzahl). Der Motor hat oben einen Kühlkopf. D.h. eine Art Ventilator der kühlt. Dies funktioniert auch ziemlich gut. Selbst beim Alufräsen wird die Spindel nicht heiß, höchstens handwarm. Gleichzeitig läuft der Motor so leise, daß man gut daneben arbeiten kann, kein Vergleich mit dem Orginalmotor. Die Spannzangenfutteraufnahme wird mit zwei Innensechskantschrauben auf der Spindelwelle montiert und sitzt so sehr fest und zentriert. Das mitgelieferte Spannzangenfutter hat mit allen Spannzangen die ich habe gut funktioniert. Meist fräse ich Aluminium mit einem 3-4 mm HM Fräser. Die Zustellung beträgt bis zu 0,5mm, der Vorschub im Bereich von 60 - 80 mm/min. Eigentlich würde bei Alu mehr gehen, aber die max. Drehzahl liegt (gemessen) bei 12000 U/min. Mit dem Orginalmotor hat es immer furchtbar gerattert und die Fräser sind gebrochen. Deshalb kann ich tatsächlich dieses Set emfpehlen. Nur für das Netzteil muß man sich eine Halterung überlegen. Aufgrund des Staubes und der Späne empfiehlt es sich nicht, es direkt an der Fräse zu montieren.

robuste et facile a installer

CNC初心者なので他のスピンドルモーターと比較して云々とは言うことではありませんが、MASUTER3に使ってみた結果、振動は思いのほか少なかったですね。

First thing I did was measure the runout. I put the motor in a vise and placed a dial indicator on the side of the collet holder (without the collet cap). Rotating by hand, the total runout is .001". This is very good. The collet holder is glued onto the motor shaft. I suspect this is because they tweak the thing until it's true. I'll bet this is why they give you a holder with the motor. You are purchasing a system. I would recommend that you never remove the holder because it'll never go back on straight. Went to install it on my cheapo 3018 and it wouldn't fit. There is a metal band on the motor, presumably so it will fit larger machines. The band simply snaps off, which allowed the motor to fit into the Z-axis bracket just fine. The diameter of the motor, without the band, is 1.65" I read all the reviews about ramping up the motor, but just for fun, I simply turned it on at full speed with the Candle interface. The motor came on without any issues. However, just for good measure, I will put the ramp-up code into the header section of the gcode generator so it's always there for all NC program files. The motor is very loud, but not because it's unbalanced or out of round. It runs at 20K RPM, so I would expect it to be loud. It isn't any louder than my Craftsman wood router. I was hesitant to purchase this motor, but since Amazon has a decent return policy, I decided to risk it. So far, I'm pleased.