Nema23 stepper for G540

[Drools]

I want to purchase 3 new steppers for my new build 48"x36" moving gantry.
I'm using 1/2-10 2 start screws on THK25 linear rails with dumpster nuts.
I'm looking at Keling
a) KL23H284-35-4B (1/4” Dual shaft with a flat) 387 oz-in
3.5A, 1 ohm, 4.1mH, 387oz-in, voltage not listed
b) KL23H2100-35-4B (1/4” Dual shaft with a flat) 381 oz-in
3.5A, .73 ohm, 2.8mH, 381 oz-in, 2.55V

CNCRP
a) R57BYGH4331380 oz-in Nema 23 Stepper Motor
3.5A, .9 ohm, 4.1mH, 28kg-cm (388.85 oz-in), 3.15V

I know Gerry is leaning toward the 381oz from Keling for its potential for higher speeds but I'm doing an order from CNCRP and would like to do a single order. What are your thoughts on the steppers listed? Is there a different motor I could look at from another vendor?

Thanks

[awerby]

and they recommend the 280 oz-in model for the G540. G723-280-4 Stepper Motor

To me, that machine you're building (48" x 36" moving gantry) sounds a bit large for that motor, or that drive. If it were me building it, I'd be looking at some of Gecko's higher voltage drives, and maybe one of their 400 oz-in motors - either that, or going with NEMA 34 frame stepper motors. But you might ask around among the G540 enthusiasts, and see what sort of luck they're having running that big a machine on it with 23-frame motors - who knows, it might work fine...

Andrew Werby
ComputerSculpture.com — Home Page for Discount Hardware & Software

[Drools]

Thanks Andrew, I noticed that Keling also sells a Nema34 motor that can be used with the G540. ie: KL34H260-35-4B (1/2" Dual Shaft ) 465 oz-in On sale for 70.00$
I would like to hear from anyone that has used this combo before.
Thanks