GOLMART for as much as possible?

GOLMART for as much as possible?

I saw that golmart has got a listing for eustathios specific ball screws and I was wondering if anyone has sourced linear shaft, bearings, couplers etc from them as well? If their quality is acceptable I’d like to get as many hard parts as I can from them.

In general, since I haven’t built this specific printer, I use RDB Bearing… For my shafts and bearings and flex couplers or transmission cnc if you need rigid couplers (and they have great leadscrews)

misumi is good too.

@raykholo that transmission cnc shop has great prices.

@Jim_Stone Misumi is always my fallback if I decide to swing for the fences budget wise.

For the linear shafts I really do recommend MISUMI due to the tolerance. I’ve heard of people who spec the proper tolerance from Chinese suppliers and you get a mixed bag of whether or not you have the proper +/-. You would want to double check against the misumi tolerance listing for the part in the BOM. I am out right now and so I cannot confirm.

@Ben_Marks yeah, I originally avoided them because the shipping wasn’t free and seemed expensive, but then I realized that even with, say, $8 shipping the leadscrews were cheaper than the next comparable vendor with free shipping (aka shipping factored in). Those were some great quality tr8’s btw, also got a hollow Jeka 8 stepper and couplers from them and all came very quickly.

@Eclsnowman
When you say tolerances are you mainly talking about straightness or the diameter consistency?

These are the misumi tolerance for g6 tolerance:

http://us.misumi-ec.com/pdf/fa/2012/p1_0097.pdf

http://us.misumi-ec.com/vona2/detail/110302634310/?HissuCode=SFJ10-[20-800%2F1]&PNSearch=SFJ10-[20-800%2F1]&searchFlow=suggest2products&Keyword=SFJ10-