CNC Router Spindle Test 1.2 Kw vs 2.2 Kw: This Test Will Help You Decide 

Your welcome! You'll be very happy with the 65mm, you can't go wrong with either of these spindles. I'm glad you enjoyed it, Thank you!

Awesome! I'm so glad it helped you out!

Your welcome! Yes I wasn't sure if I had gone far enough for the comparison and when I saw your comment I knew I needed more. Thanks for the push, I needed it. Glad you enjoyed it!!

Thank you!! Lol on the man card! Yes the 1.2 has an er11 collet which only goes up to 1/4" bits, the 2.2 has an er20 collet allowing up to 1/2" bits. I'm glad you found it useful!

Yeah unfortunately I bought a LongMill MK2 and quickly found out they aren’t easily upgradable. You might want to check with Sienci Labs to see if the SLB will be upgradable to a 2.2kw spindle.

Hey! Yes your definitely correct that spindle can do a lot more than what I covered in the video. I just didn't want to hurt or damage a brand new spindle but to get somewhat close. I also never made a full depth pass so I wanted to be safe and crank up the rpm, not paying attention to cut quality. I'm glad you enjoyed it! More cool stuff to come!

Wow that's impressive! Just curious if your spindle is a 4 pole or a 2 pole motor? Woodworking spindles are 2 pole motors and aren't supposed to work at low rpm, this is why they aren't meant to cut ferrous metals which usually require low rpm cutting. 4 pole motors can operate at slow rpm's and so they are better suited for metal work.

@@StudioZ72.create Thanks! It is the same exact spindle like Yours, 2.2kw for wood (probably 2 poles) and yes, it does not have enough torque on low speeds for ferrous metals so i have to run it at least 6-8k rpm. But i didn't mention cutting speed (which is slow, around 150mm/min or 6in/min) and i have a coolant. I have to make rpm reductor or put a servo motor as a spindle.

Interesting, what material did it stall in?

Thanks so much! As far as the maintenance for the 2.2 Kw spindle it should be warmed up first if you are using it in a cold environment, also the cooling system is a sealed system so not sure how long the coolant lasts before it needs to be changed? I use carbide motion for my post processor and it has a spindle warm up program built in if you choose to use it. I will follow up as I use it for a longer period of time but it seems pretty easy on maintenance. Glad you like the videos, comments like yours keep me in it.

Thank you for the quick response and the great videos. I look forward to your future videos.

Your welcome!

Hey there! I'm not sure which scene you are referring to but after the first test with both the 1.2 Kw and the 2.2 Kw where the 1.2 Kw ended up failing yes there was chatter in the cut from the machine. When I used the 1/2" upcut endmill on the 2.2 Kw there was chatter on the slower speed pass 100 ipm but not on the faster ones. In the last test with the 3/8" upcut endmill at 3/4" depth of cut there was chatter on the first pass at 100 ipm only and yes I noticed it too that the camera made it appear as if the cut was jagged but it wasn't. Though I did ramp in at the beginning and that causes a slight chatter before it gets all the way into the cut.

As long as that works for you then that's great. But, just remember that the lighter cuts you take means that you have to make more passes which means the job takes longer. The purpose of this video was to demonstrate that, and for the viewer to figure out what is best for them. Any router will perform the task it's just how long will it take?

Much appreciated thanks for watching until the end of the video! So for the hobbyist that only uses it for small shapes and intricate details I would say you do not need the 2.2 Kw spindle. The 1.2 Kw can do everything that the 2.2 Kw can just slower, except use 1/2" shaft bits. You could even get by with just a Makita 65mm router, if you don't mind manually turning on the router and having no RPM control in your toolpaths. You would have to control the RPM manually on the router but the performance would be less than the 1.2 Kw spindle. Now if your using it for a business as you know time is money and I would say then you should consider upgrading to the 2.2 Kw. You can finish jobs faster and as you know time is money.

@@StudioZ72.create The idea of paying off the CNC by using it is very lucrative. Kind of lends itself to that too. That might be reason enough for at least getting a spindle over a router.

Yes in my opinion I would not bother with the router, it takes away from it actually functioning as a CNC when you have to manually control the RPM. If your buying a machine like the Shapeoko 5 Pro or similar it seems silly to put a router on it, it can handle so much more.

Thanks for posting this comparison. We are currently considering the Shapeoko 5 for our high school robotics team and have been debating between the 1.2kW and the 2.2kW spindles. We will cutting mostly plastics (polycarbonate, delrin) and aluminum. In addition to the speed advantage, is there any increase in accuracy of the results? With the lower power spindle, more shallower cutting passes would be required. There is going to be some positional error in each pass so, hypothetically, more passes will lead to greater error in the finished part. The error is important to us because we make holes that are a press-fit for bearings.

Glad this video helped you out! Yes there is an inherent advantage to the 2.2 Kw spindle in accuracy over the 1.2 Kw and that is because the 2.2 Kw has an ER 20 collet and can use 1/2'" shank bits. The 1/2" shank bits are more rigid and will not deflect under load like the 1/4" bits that the 1.2 Kw spindle is limited to. Also, yes you are correct that the likelihood of inaccuracy could increase with the need to make more passes. As someone else pointed out here in the comments the 2.2 Kw will have much more low rpm torque which is great for cutting plastics and metals. Aside from the spindles the Shapeoko 5 Pro by itself is a very accurate machine. I've cut many circles with it and the cut was perfect when it met up with where it started.

I think the edges would be clean, I didn't want to try it in this test because down cut bit s are harder on the spindle since the chips are evacuated down into the material you are cutting and not up and out. I didn't have a compression bit on hand but that would have been the best choice.

On both spindles?

@@StudioZ72.create absolutely. The actual amount of power in use. Particularly as the spindle is slowing down would be very interesting.

I haven't cut plastics yet, I'm assuming they have to be cut at lower rpm so as not to melt the plastic?

Lol! I agree with you, I was very impressed with the 1.2 Kw. I think Titan just goes for the shock aspect to reel you in. However, it is good to know the limits of something. Yes those machines are quite tough but I think everyone is so afraid that they will ruin the accuracy of the machine and so they baby them. Cheers!

Good question, but it's not listed anywhere. From what I can find the Shapeoko Pro which is a lesser model uses Nema 23 steppers. When I looked at mine they have a sticker on them that reads....Model: STEP200-S5 2.0A(U) 1.8deg/step

So I just measured them also and it looks like they are Nema 23 steppers. I put the calipers on them and I'm getting just over 2.2"

@@StudioZ72.create Nema 23 have a lot of torque.

Torque is awesome but how fast can they spin? I watch the shaft that sticks out the back of the motor while the machine is cutting and the motors are hardly turning. There is still a lot left there, hoping Carbide 3d has a way to bypass the setting they imposed(my assumption) and really show what the Shapeoko 5 Pro is capable of.

Good to know! Now if I can only find out if it's possible to speed up the Shapeoko 5 Pro above 200 inches per minute. It's not a big deal but it would be nice.

@@StudioZ72.createI believe max right now is 275ipm

Hey there! Just wondering if this is a speed you achieved or heard about? Because I couldn't get my S5 Pro to go above 198 ipm in a straight line during machining. Yes it peaked out at like 270 ipm when moving around after initializing but not while cutting.

Hey there! Sorry the 1.2 Kw spindle has already been removed from the machine. Only the 2.2 Kw spindle could be tested at this point but I don't work with metals, it's possible , I'll have to look into it.

That's pretty cool! Correct me if I'm wrong but I believe the 2.2 Kw spindle is around 3 hp? Which would put the 1.2 Kw just under 2 hp? But the difference is in the torque. The 2.2 Kw running on 220 volts and weighing much more than the 1.2 Kw will have much more torque because your spinning a heavier mass.

@@StudioZ72.create I think these are also all measured at peak power which is typically max RPM - running 18k RPM will leave some power on the table. I think that's why it's nice to get the 2.2kW as some bigger bits will not be happy at max rpm.

The purpose of the test is to point out how far each spindle will go before reaching failure or close to it, and then the consumer can use this information to determine which spindle is right for them when purchasing one. The 200 ipm was discovered during the test and I'm hoping something happens with that. I believe all machines have a governed speed that most of the time has to be manually overridden and this one just happens to be a little low.

Nice! How deep?

@@StudioZ72.create 0.375” depth.