MH3 frame, 60 N.m holding, Hiperface feedback
The MH31902P07F2200 is a Schneider Electric MH3-series three-phase AC servo motor sized for the mid-torque machine-tool axis — 60 N.m of holding torque with the integrated holding brake engaged, 38 mm smooth shaft on a 190 mm international-standard flange, and a Multiturn SinCos Hiperface encoder for absolute position feedback back to the drive. Its natural-convection cooling and IP65 standard sealing suit it to cabinet interiors and sheltered machine enclosures rather than washdown or outdoor mounting — the encoder and rotor are protected against dust and low-pressure water jets, not high-pressure cleaning.
Torque envelope and continuous power
Holding torque is 60 N.m with the brake; continuous stall torque lands at 48 N.m across the full 115 to 480 V three-phase supply window, so the motor is not derated when the cabinet is wired to a 400 V or 480 V bus — only the drive selection changes. Nominal torque is 29 N.m when paired with the LXM52 or LXM62 drive platforms at 400 V or 480 V three-phase, and peak stall torque reaches 220 N.m for the acceleration and deceleration transients that an axis demands during quick direction changes. Continuous power dissipation is rated at 6260 W, which sets the cabinet thermal budget — natural convection means the motor sheds that heat through its own surface, so adjacent drives and contactors should be spaced to keep inlet air clear.
Speed, radial load, and motor constants
Nominal speed is 2000 rpm with both the LXM52 and LXM62 drive families at 400 V or 480 V, and the mechanical speed ceiling is 3800 rpm — a gearbox or belt reduction is needed if the driven load calls for higher shaft speed. Maximum radial force on the shaft is rated 3200 N at 1000 rpm and falls on a published curve to 2950 N at 4000 rpm, so timing-belt pulleys and pinions mounted close to the shoulder apply the lower figure while overhung couplings see the higher end. Back-EMF constant is 108.3 V/krpm and torque constant is 1.56 N.m/A at the 120 °C copper-hot reference — together they tell the drive sizing engineer how much bus current the motor draws at a given torque, and continuous stall current sits at 30.8 A with a peak Irms of 114 A. Stator resistance of 0.15 Ohm and stator inductance of 3.86 mH are the loop parameters the drive's current controller uses to tune the torque loop — keeping them on the controller card keeps the axis from oscillating at low speed.
Mechanical mounting and connection
Motor length is 308 mm with a 190 mm flange, 180 mm centring collar at 4 mm depth, and four 14 mm mounting holes on the international standard pattern — a direct swap into a machine-tool rebuild where the previous MH3 frame matches this footprint. Shaft is 38 mm diameter by 80 mm long with a smooth (no-keyway) end and no second shaft, and the rotor carries ten poles — the pole count matters for the drive's commutation alignment during commissioning. Power and feedback enter through rotatable right-angled connectors, which lets the wireman orient the cable exit for the cabinet layout without re-routing the loom — a real benefit where the axis envelope crowds the motor box.
Sourcing posture for the active BOM line
Lifecycle stage is recorded as current on this part number, and no official successor or cross-reference appears in the record — the MH31902P07F2200 remains the supported MH3 frame at this rating.