Servo Motor Sizing: stepper_servo
Servo motor sizing data for brushless AC permanent-magnet, hybrid stepper-servo, and direct-drive motors across NEMA 17/23/34/42 and IEC 42–180 mm frame sizes. Fields include continuous and peak torque, rated/max speed, rotor inertia, torque constant (Kt), back-EMF constant (Ke), winding resistance, thermal time constant, encoder resolution, weight, shaft diameter, voltage class, and IP rating. Based on Yaskawa Sigma-7, Siemens 1FK7, Beckhoff AM8000, Kollmorgen AKM, Allen-Bradley Kinetix MPL, NEMA MG-1 Part 30, IEC 60034-1.
| motor type | record id | IP rating | back emf constant V per krpm (V/krpm) | continuous torque Nm (Nm) | encoder resolution counts per rev (counts/rev) | frame iec mm (mm) | frame nema | max speed rpm (rpm) | max winding temp C (degC) | notes | peak to cont ratio | peak torque Nm (Nm) | rated speed rpm (rpm) | rotor inertia kg cm2 (kg·cm2) | shaft diameter mm (mm) | thermal time constant min (min) | torque class | torque constant Nm per A (Nm/A) | typical applications | voltage class | weight kg (kg) | winding resistance ohm (ohm) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| stepper_servo | NEMA17_S01 | IP40 | 23 | 0.4 | 16,384 | 42 | 17 | 3,000 | 130 | Hybrid stepper with encoder closed-loop; 2-phase; 200 full steps/rev; encoder 4096 line; Kt at rated current | 3 | 1.2 | 1,000 | 0.035 | 5 | 15 | 0.1-0.5 | 0.25 | small automation, label applicators, light positioning | 24VDC | 0.35 | 2.8 |
| stepper_servo | NEMA23_S01 | IP40 | 52 | 1.27 | 16,384 | 57 | 23 | 3,000 | 130 | Hybrid stepper servo 2-phase; 200 full steps/rev; encoder 4096 line; closed-loop position control | 3 | 3.81 | 1,000 | 0.3 | 6.35 | 20 | 0.5-2 | 0.56 | CNC routing, laser cutting, light dispensing | 48VDC | 1.2 | 1.4 |
| stepper_servo | NEMA23_S02 | IP40 | 83 | 2 | 16,384 | 57 | 23 | 3,000 | 130 | Hybrid stepper servo; higher torque variant; resonance-free operation per encoder feedback | 3 | 6 | 1,000 | 0.55 | 6.35 | 22 | 0.5-2 | 0.89 | medium CNC axes, plasma cutter, conveyor | 48VDC | 1.8 | 0.9 |
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