Newbie- Trying to determine best stepper/driver combo

[homerswitch]

Hello everyone,
In trying to determine the best steppers/driver setup I have run into some confusion involving why the kits offered by Kelling seem to be lacking in voltage. My current machine uses KL23H286-8B steppers (bi-polar parallel), 4030 drivers (@ 1/2 step) and 36V pwr supply, which is sold as a 3-axis kit. When ran above 480 rpm (40 ipm) I lose steps. I believe this is because these motors could be run at 83v, but I'm at 36.
I am now building a much larger, heavier machine and want to make sure I get the results I'm looking for (100+ ipm). The gantry weight is 100 lbs and is driven by a 1" x 5tpi acme lead screw with a steel nut, yet turns easily with a little finger pressure. Best guess is 40 oz-in is more than enough to turn the screw, based on jerry-rigged tests, (similar to my current machine's values).
I would appreciate any recommendations on motor/driver combinations for the new build, and also on increasing the performance of the current machine.
Thanks in advance to everybody!
Pat

[Kelinginc]

Originally Posted by homerswitch Hello everyone, In trying to determine the best steppers/driver setup I have run into some confusion involving why the kits offered by Kelling seem to be lacking in voltage. My current machine uses KL23H286-8B steppers (bi-polar parallel), 4030 drivers (@ 1/2 step) and 36V pwr supply, which is sold as a 3-axis kit. When ran above 480 rpm (40 ipm) I lose steps. I believe this is because these motors could be run at 83v, but I'm at 36. I am now building a much larger, heavier machine and want to make sure I get the results I'm looking for (100+ ipm). The gantry weight is 100 lbs and is driven by a 1" x 5tpi acme lead screw with a steel nut, yet turns easily with a little finger pressure. Best guess is 40 oz-in is more than enough to turn the screw, based on jerry-rigged tests, (similar to my current machine's values). I would appreciate any recommendations on motor/driver combinations for the new build, and also on increasing the performance of the current machine. Thanks in advance to everybody! Pat

check this kit

NEMA 34 stepper motor 3 axis kit

NEMA 34 906 oz-in Steppper Motors 3 Axis CNC Kit:

A:3 PCS KL-KL-9082 Bipolar Driver, You can Update to G201X or G203

B: 3 PCS NEMA 34-906 oz-in Stepper Motors

C:1 PCS C10 Breakout board, E-Stop or Limit Switch can be wired

D: KL-6515 Power Supply, 65VDC,15A, 5V, 12VDC

It runs fast

Stepper Motor, Stepper Motor Driver,CNC Router, Stepper Motor Power Supply, Stepper Motor Kit, DC Servo Motor, Stepper Motor, Stepper Motor Driver, CNC Router, Stepper Motor Power Supply, Stepper Motor Kit, DC Servo Motor, Keling Technology Inc, USA

[homerswitch]

Thanks for the fast reply. I have considered going to the 34's, but if I were to stay with the motors mentioned previously (KL23H286-8B) would I see significant gains if I were to upgrade to KL-9082 drivers and KL-6515 Power Supply (@80v). Would there be significant disadvantages to this? Just trying to weigh my options...
Thanks,
Pat