Speed-torque profile and application fit
The SH31402P02A1100: This SH3 series motor delivers 3.9 kW continuous power with a nominal speed of 3000 rpm at 400 V three-phase input. The nominal torque sits at 18.6 Nm, and the continuous stall torque is 19.5 Nm across the 115-480 V three-phase range. That flat torque curve from stall to rated speed means it handles constant-torque loads like conveyors or feed axes without derating through the mid-range. Peak stall torque reaches 60.1 Nm — roughly 3x the continuous rating — giving headroom for acceleration transients on a pick-and-place gantry or a press axis. The maximum mechanical speed of 4000 rpm leaves a 25% overspeed margin above nominal, useful for rapid traverses or light-load positioning moves.
Feedback and environmental sealing
The absolute multiturn SinCos Hiperface encoder provides position feedback without a home cycle on power-up — the multiturn count tracks absolute position over multiple shaft revolutions. This matters for applications where the machine must resume from the last known position after a power loss, such as a rotary index table or a vertical axis that needs to avoid a crash on restart. IP65 rating on both the motor body and the shaft bushing means it withstands washdown and dust ingress per IEC 60034-5. The straight connector and smooth shaft simplify cable routing and coupling installation in tight cabinet-to-machine transitions. Natural convection cooling eliminates the fan — no moving parts to fail, but the thermal budget relies on the motor flange conducting heat into the machine frame, so mounting on a thermally conductive surface is the baseline assumption.
Electrical parameters and drive matching
Stator resistance is 0.6 Ohm and inductance is 11.225 mH — these set the electrical time constant and influence the current-loop tuning on the drive. The torque constant of 1.47 Nm/A at 120 °C and back-EMF constant of 101 V/krpm at 20 °C let you calculate the required drive current and bus voltage for a given speed-torque operating point. Continuous stall current is 13.2 A, with a maximum RMS current of 44.1 A — the drive must supply at least that peak for acceleration transients.
Mechanical interface and bearing loads
The 140 mm flange with a 130 mm centring collar and 3.5 mm collar depth mounts to standard international flange patterns. Four M11 mounting holes on the flange — the bolt circle diameter is not listed, but the flange size and centring collar match the SH3 frame standard. The 24 mm smooth shaft with a 50 mm shaft length couples to the load via a flexible jaw or bellows coupling; the smooth shaft means no keyway stress risers, but the coupling must transmit torque purely through friction or a clamping element. Maximum radial force is 2240 N at 1000 rpm, derating to 1550 N at 3000 rpm — this sets the allowable belt tension or overhung load from a pulley. Maximum axial force is 300 N, typical for a servo motor with sealed bearings; any external thrust load from a helical gear or a leadscrew must stay under that limit or the motor bearings will wear prematurely.