This would explain some of the vibration from the machine when it’s running. I placed the dial on the inside of the taper for the er collet.įirst I checked my existing ‘standard’ spindle before I took it out and found it was running about. Testing the spindleĪfter spotting the red loctite on the shaft I decided to check if there was any run out on the spindle with a dial test indicator. Slide out the old motor and slide in the new one. You can see the red Loctite around the shaft Installing The Genmitsu GS-775MRĪs mentioned previously installing this motor was a breeze, just twist a flat head screwdriver in the slot of the mount to lever it apart. So I just left it alone and continued with the testing. I spotted a solid red blob of glue at the top of the collet adapter. I was going to loosen the set screws and move it further up the shaft, but on closer inspection I could see that it was glued with loctite on to the shaft. The collet holder is already attached to the spindle and in my example it was not set as far up the spindle as I would have liked. The motor comes with an ER11 collet holder and a ⅛” ER 11 collet. I will test this solution later in this article and demonstrate the (shorter) G Code needed to prevent overloading your power supply. Sainsmart mentions this workaround on their website, even giving you an (overly long) G Code solution to add into your programs.
There is another solution to this problem and that is to not start the motor at full rpm, but to increase it gradually. It will be much easier to achieve a smooth surface finish while still running at a reasonable feedrate.Ĭheck out the Upgraded Power Supply from Sainsmart This extra speed can really help for small ball end tools.
The 3018 spindle speed with the standard motor is 10,000 RPM so this upgrade gives you double the RPM. ( 3018 cnc Pro review)īut to run smaller end mills you need more RPM and this is what this upgrade gives you. The 3018 is a machine well known for its lack of rigidity and being able to run smaller tooling helps reduce the load on the machine. Why should you invest in a 3018 cnc upgrade kit? This motor upgrade provides double the rpm over the stock motor going all the way up to 20,000 rpm. This is the motor I will be reviewing and testing in this article. Sainsmart sells their Genmitsu GS-775MR 24V 20,000 RPM spindle + Collet Holder + Motor Noise Suppression, for 3018 Series. There are a few 3018 cnc aftermarket upgrades available such as a Laser Module, but the least costly and most simple upgrade is the spindle motor.