Motor ratings that drive the selection
The SH32053P11A1000: This is a three-phase servo motor from the SH3 series, sized for applications needing up to 10600 W continuous power. The nominal speed depends on the supply voltage: 500 rpm on 115 V single-phase, 1000 rpm on 230 V single-phase, 2000 rpm on 400 V three-phase, and 2400 rpm on 480 V three-phase — so the drive voltage directly sets the base speed. Nominal torque also varies with supply: 751.4 lbf.in (84.9 N.m) at 115 V single-phase, 658.5 lbf.in (74.4 N.m) at 230 V single-phase, 448.7 lbf.in (50.7 N.m) at 400 V three-phase, and 355.8 lbf.in (40.2 N.m) at 480 V three-phase. The continuous stall torque is 835.5 lbf.in (94.4 N.m) across the 115-480 V three-phase range, and peak stall torque reaches 2920.7 lbf.in (330 N.m) — the overload margin for acceleration or transient loads. The motor uses natural convection cooling, so no external fan or forced air is required — the thermal budget relies on the frame and ambient airflow. Maximum continuous current Irms is 136.1 A, with a 3-second peak of the same value, which sets the drive's continuous and peak current requirements.
Mechanical integration and environmental fit
Mounting uses an international standard flange with a flange size of 8.07 in (205 mm) and a centring collar diameter of 7.09 in (180 mm) with 0.2 in (4 mm) depth. The four mounting holes are 0.6 in (14 mm) diameter — standard metric bolt pattern for this frame class. The shaft is 1.5 in (38 mm) diameter with a parallel key, key width 0.4 in (10 mm), and shaft length 3.1 in (80 mm). Overall motor length is 19.3 in (489 mm). Maximum radial force Fr is 4500 N at 1000 rpm, 3570 N at 2000 rpm, and 3120 N at 3000 rpm — important for belt-drive or overhung load applications. Maximum axial force Fa is 740 N. IP protection is IP54 at the shaft bushing without a shaft seal ring, and IP65 for the motor body and shaft bushing when the seal ring is fitted — both conforming to IEC 60034-5. The electrical connection offers a rotatable right-angled connector or a straight connector, giving cable exit flexibility in tight cabinets.
Feedback and electrical parameters
The encoder is an absolute single-turn SinCos Hiperface type — this provides position feedback at power-up without a homing cycle, and the SinCos signals give high-resolution velocity feedback to the drive. No holding brake is fitted on this variant. Stator resistance is 0.2 Ohm and stator inductance is 2.05 mH — these set the electrical time constant and influence the drive's current-loop tuning. The torque constant is 2.84 N.m/A at 248 °F (120 °C), and the back EMF constant is 172 V/krpm at 68 °F (20 °C). The motor has 5 poles.