Rotating Ballnut - design ideas

[Boyan Silyavski]

Remember that changing out a belt is no small project with the rotating nut design. So durability of a belt should be a big concern because of the downtime and hassle of disassembling everything in order to change out the belt. The whole ballscrew must be uninstalled to change a belt. No small task regardless of the size of the table.

Exactly, that's why i said 16t as minimum. Everyday 8h machining belts would withstand at least say 2 years. Using it as a hobby machine at least 6-8 years.

[mutzy]

Thanks for all of the awesome input. i was preoccupied with other things, but now I can get backt to the design.

Mutzy

[mutzy]

Boyan, how are you? sorry it has been a long time. I got the 22 teeth HTD drawn onto the shaft. The shaft is only .05 in thickness. is this too small?

[Boyan Silyavski]

Boyan, how are you? sorry it has been a long time. I got the 22 teeth HTD drawn onto the shaft. The shaft is only .05 in thickness. is this too small?

I think its too thin. The clearance from screw has to be no more than 1mm, in fact mine is 1mm. so inside bore will be 25+2=27mm.