Nema 23 hybrid stepping linear actuator

The Nema 23 External  linear actuators 1.The motor can be moving the load 1N -1800N. 2.The size 57x57mm.(length of the motor 41mm,45mm,54mm,56mm,65mm,76mm) 3.The rated current 0.1-6A.(we can do as you need ) 4.The resistance per phase 1-10 Ω. 5.The detail of the lead screws  

Screw Dia (inch)	Screw Dia (mm)	lead (inch)	Lead (mm)	Travel Per Step (mm)
0.31	8.0	0.0394	1.0	0.005
0.31	8.0	0.157	4.0	0.02
0.31	8.0	0.314	8.0	0.04
0.31	8.0	0.472	12.0	0.06
0.31	8.0	0.63	16.0	0.08
0.31	8.0	0.787	20.0	0.1
0.375	9.525	0.0633	1.58	0.0079
0.375	9.525	1.0	25.4	0.127
0.392	10.0	0.0787	2.0	0.01
0.392	10.0	0.157	4.0	0.02
0.392	10.0	0.392	10.0	0.05
0.392	10.0	0.787	20.0	0.1
0.433	11.0	0.0787	2.0	0.01
0.433	11.0	0.157	4.0	0.02
0.472	12.0	0.472	12.0	0.06

6.We are able to supply the lead screw as you need or samples if the lead screw is not in the list . 7.Packing: the parking will be changed by the length of the lead screw ) 8.If you need the linear actuator but you are not sure about the specification of the items or lead screws, pls let me know. I'd like to choose the motor for you and sure that is as you required . 9.If you want to choose the linear actuators, pls let me know the speed (moving distance per second) and the   torque. I'd like to give you our advice to the point and technical support.