500W CNC Brushless Spindle Set

Swapped this from an 80w spindle... No machine should come with less than a 500w LOL Everything wired up easily to my current setup of a TTC450 Pro. I'm easily cutting detailed material at 400in/min with a 2.5mm 2 flute flat endmill bit, and I think from the sound is still pretty slow. I would like to see this setup come standard with an enclosure, but that's what 3D printing is for LOL. Spindle is rated for 12k RPM, hasn't been an issue with any hardwood or acrylic for me. Definitely happy with this!

Its a nice spindle for the money! A key feature: the ER11 is cut directly into the spindle, not a separate part! The bearings are just deep groove ball bearings: 6002ZZ on the ER end and 6900ZZ on the fan end. A fiber washer is used to shim the top and a wave washer is used to preload the bottom bearing outer race upward. The runout isn't bad, but its irritating if you are using skinny engraving cutters. I measured 0.0005" Total Indicator Reading (TIR) on the spindle OD near the bearing and 0.0007" TIR on a 1/8" diameter tool shank clamped in the collet. The 600 Watt motor read 0.0004" TIR on the spindle OD and 0.008" TIR on the same tool. With the 600 Watt motor clamped in a V-block I was able to move the spindle up and down for a total radial motion of 0.008", measured on the tool. In use, a 0.2mm tip 15 degree V bit at 0.8mm depth produced an effective cut width at the surface of 0.55mm. This should be more like 0.41mm. My results with a 30 degree 0.1mm tip bit were worse: I have both the 500 and 600 Watt motors; the only visible difference is the 600 Watt one is longer. The internal photos are of the 600 Watt motor; the other one is installed on my CNC router. The 600 Watt motor is trifilar wound with all the coils going to a single center tap which is not brought out of the motor. I soldered onto the center tap and measured each coil group: at 2.4 Volts and 9.7 Amps or 0.24 Ohm. Measuring from wire to wire (with less current) I got 0.37 Ohm. All the measurements were very close to each other. My biggest gripe: the air cooling holes on the top are MUCH larger than the bottom. I drilled out my 600 Watt motor's end cap to 1/4" on all 6 holes to improve the air flow. You can remove just this end by pulling three super-long screws; it comes right off. Be SUPER careful about keeping magnetic junk away from the rotor if you pull it out! Clean it with blue tape if you do pull it out! For some reason I get 12,000 RPM on the display (and it sounds fast) with the 500 Watt motor but only 8,000 on the 600 Watt motor (same driver). This is a step up from the brushed DC ER11 spindles (with the pressed on adapter), but its NOTwhat you are looking for if you need zero runout. This has runout and slop, but its good enough on my belt driven CNC!

Max RPM is 10100... where did the 1900 RPM go??? You can stop it with two fingers

Overall works well. Make sure you set the power supply to the correct voltage setting otherwise it will limit the motor performance. Includes cables for the controls even though the description doesn’t specify.

UPDATE: Original PSU was faulty and capable of only delivering 30V under load, substituting with a known good PSU resolved all issues including starting at maximum RPM from zero. Actually now peaking at 12,700 RPM. Seller is responsive but time zone is a challenge (China based). Very nicely packaged, having a good set of ER11 collets plus some engraving bits is a nice touch. I will probably only ever use the 1/8” (3.175mm) and 1/4” (6.35mm) collets though. Testing minimum speed I determined it was useable from about 600 RPM, anything below that it would stall very easily. Maximum speed was confirmed with my digital tachometer. Runs very smoothly and so much quieter than my Makita Router it is replacing, and being able to set speeds below 10k RPM should be a big plus!

After hooking up the motor as per instructions, 3D printing a box for the potentiometer, tachometer, and on/off switch (all included), the motor is purring and very quiet. RPM's were a little more than advertised after running for 10 mins. Temperature wasn't too bad over all - precisely 112 degrees Fahrenheit. Overall not bad. Got what I paid for.

Motor ran but very slowly. Can only achieve about 3500RPM then in pulses on and off and when using the pot to adjust to a higher speed it just quits and needs to restart, which it only does sometimes??? Build quality looks good and runs very smoothly and quietly, when it runs?? Very disappointed in this product!!! Purchased a second controller to ensure original was OK, same issues. Not sure if this is a bad spindle?? Will have to reach out to see if they can replace it or offer some guidance on what is wrong??

Llegó tal cual se anuncia. Con todos los elementos indicados y en muy buen estado.

Exellent kit

Très satisfait bon produit pour le prix

Very good quality product

Seller needs to update the drawing to show that both ends of the motor are 57mm making it so the motor will not fit a 1 piece 55mm spindle mount. There’s no chance of the included spindle mount working with my cnc so I will have to come up with another solution. As well the seller needs to tape the box closed no wonder people have packages showing up missing components?? Will update when I actually get to use it. I ended up buying an oversized spindle mount and 3d printing a spacer I could flex over the larger end of the motor. Motor works well and much better balanced than the original 775 brushed unit. It would have been nice if they had included a wrench for the spindle shaft not just the nut.

One part of the 2-part mounting fixture has an internal radius that is too small to wrap around the spindle motor, so I can't get this mounted in my mill. So frustrating.