Servo Motor Sizing: brushless ac pm
IEC80 HV01 to NEMA23 HI01
Servo motor sizing data for brushless AC permanent-magnet, hybrid stepper-servo, and direct-drive torque motors across NEMA 17/23/34/42 and IEC 42–310 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/SGMCS, Siemens 1FK7/1FL6, Beckhoff AM8000/AM887x, Kollmorgen AKM/KBM/TB, Allen-Bradley Kinetix MPL, Applied Motion STM, Leadshine ELS, 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) | peak to cont ratio | peak torque Nm (Nm) | rated speed rpm (rpm) | rotor inertia kg cm2 (kg·cm2) | shaft diameter mm (mm) | standard | 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 | NEMA17 01 | IP54 | 5.2 | 0.19 | 131,072 | 42 | 17 | 5,000 | 130 | 3 | 0.57 | 3,000 | 0.018 | 5 | Yaskawa SGM7J-01A; NEMA MG-1 Pt.30; IEC 60034-1 | 10 | 0.1-0.5 | 0.056 | pick-and-place, small CNC, 3D printer | 24VDC | 0.3 | 3.8 |
| brushless ac pm | NEMA17 02 | IP54 | 8.7 | 0.32 | 131,072 | 42 | 17 | 5,000 | 130 | 3 | 0.96 | 3,000 | 0.032 | 5 | Yaskawa SGM7J-02A; NEMA MG-1 Pt.30; IEC 60034-1 | 12 | 0.1-0.5 | 0.094 | pick-and-place, small dispensing systems | 24VDC | 0.45 | 2.2 |
| brushless ac pm | NEMA17 03 | IP54 | 13.1 | 0.48 | 131,072 | 42 | 17 | 6,000 | 130 | 3 | 1.44 | 3,000 | 0.051 | 5 | Yaskawa SGM7J-04A; NEMA MG-1 Pt.30; IEC 60034-1 | 15 | 0.1-0.5 | 0.141 | small assembly automation, label applicators | 24VDC | 0.65 | 1.5 |
| brushless ac pm | NEMA17 HI01 | IP54 | 8.7 | 0.32 | 131,072 | 42 | 17 | 5,000 | 130 | 3 | 0.96 | 3,000 | 0.065 | 5 | Siemens 1FK7-HI concept; Yaskawa SGM7J medium inertia; IEC 60034-1 | 14 | 0.1-0.5 | 0.094 | load-side inertia matching, semiconductor transport | 24VDC | 0.5 | 2.2 |
| brushless ac pm | NEMA23 01 | IP65 | 17.2 | 0.64 | 131,072 | 57 | 23 | 6,000 | 155 | 3 | 1.91 | 3,000 | 0.15 | 9.525 | Kollmorgen AKM21H; Beckhoff AM8021; Teknic N23; IEC 60034-1 | 18 | 0.5-2 | 0.18 | packaging, conveyor, CNC router | 48VDC | 0.85 | 1.2 |
| brushless ac pm | NEMA23 02 | IP65 | 27 | 1 | 131,072 | 57 | 23 | 6,000 | 155 | 3 | 3 | 3,000 | 0.24 | 9.525 | Kollmorgen AKM23; Teknic N23; Allen-Bradley MPL-A230; IEC 60034-1 | 22 | 0.5-2 | 0.29 | x-y gantries, indexing tables, pick-and-place | 48VDC | 1.1 | 0.75 |
| brushless ac pm | NEMA23 03 | IP65 | 41 | 1.5 | 131,072 | 57 | 23 | 5,000 | 155 | 3 | 4.5 | 3,000 | 0.41 | 9.525 | Kollmorgen AKM24; Beckhoff AM8022; IEC 60034-1 | 25 | 0.5-2 | 0.44 | CNC milling auxiliary axes, fill head drives | 48VDC | 1.5 | 0.45 |
| brushless ac pm | NEMA23 04 | IP65 | 52 | 1.91 | 131,072 | 57 | 23 | 5,000 | 155 | 3 | 5.73 | 3,000 | 0.62 | 9.525 | Kollmorgen AKM25; Beckhoff AM8023; IEC 60034-1 | 28 | 0.5-2 | 0.56 | tension control, winding, printing registration | 48VDC | 1.95 | 0.3 |
| brushless ac pm | NEMA23 HI01 | IP65 | 27 | 1.27 | 131,072 | 57 | 23 | 5,000 | 155 | 3 | 3.81 | 3,000 | 0.72 | 9.525 | Siemens 1FK7-HI; Yaskawa SGM7J medium-inertia; IEC 60034-1 | 30 | 0.5-2 | 0.29 | high load-inertia ratio applications, rotary indexers | 48VDC | 1.6 | 0.75 |
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