Ballscrew for 3020T Y Axis

[JAZZCNC]

Chances are your screws are TR14x3 14mm dia 3mm pitch so like John says you could go with RM1605 and increase speeds slightly and loose some resolution. . . . OR go the other way and use RM1204 12mm Dia 4mm pitch which if your doing mainly PCB work could suit better.?
The thinner screws won't matter here because the length isn't great and the screw speeds won't be high causing whipping. The finer pitch will give slightly more speed than TR14/3 but not much.

I think your main weak area here will be the end fixing.? Chances are they just used standard deep grove bearings which will allow a certain amount of end float there reducing accuracy ballscrews give. So suggest you don't go rushing into ordering without checking out how your going to adapt or get round such an issue.
Could be has simple as change of bearings to pair of angular contact if they fit in same space but could also mean completely different approach and need some bearing blocks making or buying.?

[richie00boy]

Thanks guys, this is the sort of info I was after. The current leadscrews are 16mm and mount into what I would say is a normal ballrace.

[JAZZCNC]

Thanks guys, this is the sort of info I was after. The current leadscrews are 16mm and mount into what I would say is a normal ballrace.

Rich, Are you sure they are leadscrew and not ballscrews.? Asked before in other thread but if you can post better pictures of both the screw and nut it's easy to tell.
One clue if it's a ballscrew is to look on the top of each thread and you will see C shaped grove.

[richie00boy]

I've put a video on the other thread, maybe you can tell from that. I can't see any kind of C shape in the thread and the advert didn't say anything about ballscrews. Just said 1204 trapezoidal screws, and I've just measured them and they are 12mm not 16mm. It is the slide rails that are 16mm.