Thread: Rack & pinion

As said in the thread I would be happy to import them and ship them out, I am hoping to get a factory next week and I have the funds to import them, I would only ask for the cost and postage for it + any fees I may get charges (import tax GST ect. all the ???? taxes)

Onya Chris.
I will take some off you to stick on the shelf for future builds if that helps.

I found 2 suppliers in china already myself with the specs given, if their prices are as good as the ones listed I will look to getting some samples to see the quality.

1 Supplier I have high hopes for and think is the same cncquest was talking about and the 2nd im not so sure about, but its always best to email a few as you dont get a reply sometimes.


I thought the racks supplied to myself from TEA were a reasonable price, would have cost around the same for a Belt system.

Oh, well ill see how it works out, I wouldnt mind getting some from Italy instead, would be higher quality than from china

http://www.mechmate.com/forums/showthread.php?t=930

Is the rack and pinion used instead of a ball screw?

Originally Posted by John H

Is the rack and pinion used instead of a ball screw?

Yup, you pretty much have the option of rack, screw or belt. Lathes use Racks and Pinions in pretty much all the builds I think.

So is there an advantage over rack & pinion v ballscrews?

Ballscrews/leadscres have mechanical limitations on large machines

There is also a chain drive option - not seen much these days but chain drives have been used successfully and reliably on large industrial machines.

Originally Posted by echnidna

Ballscrews/leadscres have mechanical limitations on large machines

There is also a chain drive option - not seen much these days but chain drives have been used successfully and reliably on large industrial machines.

Ballscrews would be the ultimate option IMO. The best option but where you need a longer machine a R&P I would think is the next best thing with belts not far behind.

I am interested Chris.

I have some $$$ stashed away for the next build.

Willy

Still waiting on a reply from CNCQuest, hes been online but not replied

Found a supplier myself but nothing close to what he was quoting.