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1500 machines and not one has let go , why is that? That's 4500 moving parts daily? Do you know surface hold area from nut to collar clamp. Just a little info. Its over 100x more surface hold area .

You must be joking? Lead screw lol Leadscrew with some spindles weight 55 pounds would last a day or 2 at the most

Show me where i said your is not a harmonic drive? i not trying to offend anyone. If it is thats great, i asked if you take it apart i would like to see inside .If that part works i would use it on 5th and 6th axis spindle head .The harmonic i have are $450 each and 3 of them on spindle is...

I have come back to answer questions one more time.

LOL I replied to what was said, i don't ask. I do not want to debate anything. Only thing i asked about was what it looks like in 4th axis you have, looking for parts for 5th and 6th axis spindle. Ballscrew threading was ask to me, i replied. Was told Clearpath was best choice to me . its...

Whats most likely actually happening there is the stepper drive missing the step. This happens a LOT with gecko drives and mach3 at lower speeds. The stepper timing needs to be set to sherline mode, which is a 50% dutycycle per step and the problem goes away. basically geckos, and other drives...

I know what Jake was saying. Yes the new ballscrew are threaded like i used ti have before. Ballscrews are now dropped shipped. So they are now slip fit and threaded. On coupling, which is the same as collar clamp. Has 100x more surface holding area then nut. I have to get handbook out and...

Hi Royce, i am not arguing about anything , i am just stating facts. It has nothing to do with selling 4th axis or anything. Still don't have time to finish design or anything lol . Been made 2 years ago and still only one. Waiting for someone to make a good one and sell it so i don't have to...

Yes, hopefully there is a clearpath to it. Must be the only person i hear saying servo with no feed back to controller is just as good as driver with feed back to controller .

Sorry forgot, How do you thread motor shaft to ballscrew? As you say, clamp will not hold?

I have the Centroid controller as in some video. Also for less money Planet- usb controller. I do have another low cost Ethernet controller i got sent a sample sent to me , but not hooked it up yet. But all have encoder feed back I sell any controller your looking for if needed . Clearpath is...

Servos are better. servos cost more. servos are more complicated to set up. thats all it is really. But not more accurate if stepper has encoder . depends on the encoder, a stepper has 200 defined steps per turn. microsteps are not precisely positioned. they are repeatable though so its not...

Hi Royce , cross roller are use to support the shaft on bigger harmonic drives. Most mounted have cross roller on opposite end. Drive with wave and other end cross roller for maximum support. All the robots i have seen that way. here you go . Again 2 cross rollers for support . if cheap you...

Hi Royce, harmonic drive will have cross roller as main bearing. if you get a chance if you could send me pictures of inside and if wave generator . Servo only better if there is encoder pick up to controller card. Closed loop just to drivers is just a waste of money. But no better at accuracy...

That also looks like this , a gear drive not harmonic drive. Just made different housing http://www.aliexpress.com/item/Gear-ratio-4-1-Planetary-Gear-stepper-motor-2-8A-Nema-23-Geared-Stepper-Motor-23HS22/1794201550.html

From looking at it, i believe it is a cross roller bearings are used and i don't think it is a full harmonic driver set up but could be wrong. only way to know is to remove motor or chuck and look inside. Servo motor is not any motor accurate than a steeper motor.

Absurd as to your comments. Harmonic drive is better than belt and pulley. Harmonic drive with belt and pulley with reduction is even better. Worm gears always need to be adjusted most of the time. Worm gear most likely be very last choice for anything

For the PM i am getting about lathe. It will have option for spindle mounting as a Z axis . It also will travel length of the machine on both sides of the headstock

Of course it don't look like it. lol That's bolt on 4th axis for cnc router not headstock for a cnc lathe. Would look very small on cnc lathe when its 4x9 inch profile lol As i told you before, you really need to read before you post absurd stuff .

Once it is finished the design, it will have everything that has and more