The following information DOES NOT apply to the Select Mini V2 yet.
Note: The X-Axis, Y-Axis, and Extruder all use the same size Nema 17 Stepper Motor
GigDigit.com - Stepper Motor - Z Axis - MP Select Mini V1, V2, and Pro/V3
The following table of information for the Z-axis motor may be inaccurate as some specs do not match up with the original motor.
| Model No. | Step Angle | Motor Length | Voltage - Rated | Current /Phase | Coil Resistance | Torque -Holding | # of Leads | Rotor Inertia | Mass | Diameter - Shaft |
|---|---|---|---|---|---|---|---|---|---|---|
| ( °) | (L)mm | VDC | A | Ω (Ohms) | oz-in / mNm | No. | g.cm | Kg | in / mm | |
| 42M048C1B | 7.5 | 34 | 5 | 0.55 | 9.1 | 11.9 / 84 | 4 | 12.5 | 0.22 | 0.118 / 3.00 |
Z-Axis - Monoprice Select Mini
http://www.youtube.com/playlist?list=PLjXkS2LEDjqTJ8t9faUrM1Gtt6uzxIvrD
(Playlist with some really short videos of the Z-Axis and stepper. Probably useless but just in case.)
Jingkong Motor - model no. JK42HS34-1334
http://www.jkongmotor.com/Product/42HS-NEMA17-2Phase-Stepper-Motor-1-8°.html
| Model No. | Step Angle | Motor Length | Current /Phase | Resistance /Phase | Inductance /Phase | Holding Torque | # of Leads | Detent Torque | Rotor Inertia | Mass |
|---|---|---|---|---|---|---|---|---|---|---|
| ( °) | (L)mm | A | Ω | mH | kg.cm | No. | g.cm | g.cm | Kg | |
| JK42HS34-1334 | 1.8 | 34 | 1.33 | 2.1 | 2.5 | 2.6 | 4 | 120 | 34 | 0.22 |
Jingkong Motor - model no. JK42HS34-1334
http://www.jkongmotor.com/Product/42HS-NEMA17-2Phase-Stepper-Motor-1-8°.html
| Model No. | Step Angle | Motor Length | Current /Phase | Resistance /Phase | Inductance /Phase | Holding Torque | # of Leads | Detent Torque | Rotor Inertia | Mass |
|---|---|---|---|---|---|---|---|---|---|---|
| ( °) | (L)mm | A | Ω | mH | kg.cm | No. | g.cm | g.cm | Kg | |
| JK42HS34-1334 | 1.8 | 34 | 1.33 | 2.1 | 2.5 | 2.6 | 4 | 120 | 34 | 0.22 |
Jingkong Motor - model no. JK42HS34-1334
Please note that the extruder motor has a “D” shaped shaft.
http://www.jkongmotor.com/Product/42HS-NEMA17-2Phase-Stepper-Motor-1-8°.html
| Model No. | Step Angle | Motor Length | Current /Phase | Resistance /Phase | Inductance /Phase | Holding Torque | # of Leads | Detent Torque | Rotor Inertia | Mass |
|---|---|---|---|---|---|---|---|---|---|---|
| ( °) | (L)mm | A | Ω | mH | kg.cm | No. | g.cm | g.cm | Kg | |
| JK42HS34-1334 | 1.8 | 34 | 1.33 | 2.1 | 2.5 | 2.6 | 4 | 120 | 34 | 0.22 |
