Motor specs that decide the fit
The SH30702M11A1200 is a three-phase servo motor from the SH3 series, rated for 640 W continuous power and delivering 3000 rpm at 400 V three-phase input (3600 rpm at 480 V three-phase). Nominal torque varies with supply: 2.2 N.m at 115 V single-phase, 2.15 N.m at 230 V single-phase, and 2.03 N.m at both 400 V and 480 V three-phase. Peak stall torque reaches 7.6 N.m across the 115–480 V three-phase range. The absolute single-turn SinCos Hiperface encoder gives position feedback without a home cycle on power-up — critical for applications where the axis must know its position immediately after a power loss or controlled stop. IP65 protection on the motor body and shaft bushing (conforming to IEC 60034-5) means it handles washdown and dust ingress; the housing is rated IP67. Natural convection cooling keeps the design simple — no fan to clog or fail.
Mechanical integration and load limits
The motor mounts on an international standard flange with a 70 mm flange size and a 60 mm centring collar. Shaft diameter is 11 mm with a parallel key, shaft length 23 mm. Maximum radial force at the shaft is 710 N at 1000 rpm, derating to 390 N at 6000 rpm. Maximum axial force is 80 N — keep overhung loads within these limits to avoid bearing damage.
Electrical parameters for drive tuning
Stator resistance is 16.4 Ω and inductance 41.55 mH — these set the electrical time constant and influence the current loop tuning in the servo drive. Torque constant is 1.36 N.m/A at 120 °C copper temperature. Continuous stall current is 1.5 A; maximum RMS current (3 s peak) is 6.0 A. The back EMF constant is 95.9 V/krpm at 20 °C.
No direct pin-compatible alternative is listed; the SH30702M sizing reference identifies the frame and winding family.