Speed-torque envelope across supply voltages
The SH30703M11A1100: This SH3 frame servo delivers a nominal speed that depends on the supply: 750 rpm on 115 V single-phase, 1500 rpm on 230 V single-phase, 3000 rpm on 400 V three-phase, and 3600 rpm on 480 V three-phase. The nominal torque also shifts — 3.05 N·m at 115 V single-phase, dropping to 2.63 N·m at 400 V or 480 V three-phase. That means the same motor body covers a wide voltage range, but the torque ceiling tightens as the voltage rises. Continuous output power follows the same pattern: 240 W at 115 V single-phase, 460 W at 230 V single-phase, 880 W at 400 V three-phase, and 1030 W at 480 V three-phase. The continuous power rating of 830 W is a general figure; the voltage-specific values are the ones to use for sizing the drive and the mechanical load.
Encoder feedback and mechanical interface
The encoder is an absolute single-turn SinCos Hiperface type — it reports position at power-up without a homing move, which simplifies commissioning on multi-axis machines. The single-turn resolution is enough for applications that don't need multi-revolution position tracking. The shaft is a parallel-key design, 14 mm diameter with a 30 mm shaft length and a 5 mm key width. The motor flange is 70 mm (IEC standard), with a 60 mm centring collar and a 2.5 mm collar depth. Mounting holes are 5.5 mm diameter. These dimensions match the standard SH3 frame — the motor bolts directly to the same mounting pattern as other SH30703M variants.
Thermal limits and load capacity
Cooling is natural convection — no fan, so the motor relies on its own surface area and the machine's airflow. The continuous stall torque is 2.94 N·m across the 115–480 V three-phase range, with a continuous stall current of 2.1 A. Peak stall torque reaches 11.3 N·m, and the peak current is 8.7 A. The torque constant is 1.4 N·m/A at 120 °C, and the back-EMF constant is 95 V/krpm at 20 °C. Maximum radial force Fr is rated at 730 N at 1000 rpm, derating to 400 N at 6000 rpm. Maximum axial force Fa is 80 N. The stator resistance is 10.7 Ω, and the stator inductance is 27.65 mH — these values matter for tuning the current loop on the servo drive.
Environmental sealing and connections
The motor body and shaft bushing are both rated IP65 per IEC 60034-5 — sealed against dust ingress and low-pressure water jets. This suits washdown environments and dusty production floors, but the connector interface must be properly mated to maintain the seal. Electrical connection options include a rotatable right-angled connector and a straight connector — both are listed, so the motor can be ordered with either depending on cable routing constraints. The motor has no holding brake, so the load must be held by the drive's holding torque or an external brake.