Servo Motor Sizing: brushless_ac_pm
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) | 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| brushless_ac_pm | IEC100_01 | IP65 | 526 | 19.1 | 131,072 | 100 | 3,500 | 155 | IEC 100mm flange; Siemens 1FK7063 class; shaft dia 24mm typical | 3 | 57.3 | 2,000 | 28 | 24 | 58 | 10-50 | 5.65 | large CNC axis, servo press, roll feeder | 400VAC | 20 | 0.04 |
| brushless_ac_pm | IEC100_02 | IP65 | 263 | 9.55 | 131,072 | 100 | 4,500 | 155 | IEC 100mm flange; peak 300%; Siemens 1FK7060 class; high overload 3s | 3 | 28.65 | 3,000 | 5.7 | 24 | 45 | 10-50 | 2.83 | main machining axis, servo press, robotic joint | 400VAC | 11 | 0.06 |
| brushless_ac_pm | IEC100_03 | IP65 | 526 | 14.32 | 131,072 | 100 | 4,000 | 155 | IEC 100mm flange long stack; Yaskawa SGM7G-44 class; high inertia option available | 3 | 42.96 | 2,000 | 12 | 24 | 50 | 10-50 | 5.65 | multi-axis machining, servo broaching, large gantry | 400VAC | 16 | 0.04 |
This is a sample. Search the full servo motor sizing dataset and 300+ more by creating a free account and accessing the database.
Get started for FREE