Schneider Electric BMH1903P21A2A Lexium 32 BMH 65 N·m 3500 rpm 190 mm Flange Untapped Shaft Servo Motor

The BMH1903P21A2A is a Schneider Electric Lexium 32 BMH medium-inertia servo motor rated up to 65 N·m continuous stall torque at 3500 rpm maximum mechanical speed on the 40 A LXM32MC10N4 drive, built without a brake and with an untapped (smooth) shaft on a 190 mm international standard flange. It is IP65-rated as standard (IP67 with the optional kit) and uses a single-turn SinCos Hiperface encoder (131072 points/turn).

Technical Specifications

Selection Notes

Unlike most BMH frames, the BMH1903P21A2A's continuous stall torque scales with the paired drive: 43.2 N·m on the 24 A LXM32.D72N4, 57.6 N·m on the 32 A LXM32MD85N4, or 65 N·m on the 40 A LXM32MC10N4 — so the drive selected sets the usable torque, not just the current headroom. At 194.1 kg·cm² rotor inertia and 43 kg, this is the largest motor in the BMH line covered here; it has no holding brake, so vertical or overhauling axes need the brake-equipped BMH1901P21F2A on the same 190 mm frame instead. The 131072-point/turn encoder matches the precision class of the other 190 mm BMH variants.

Applications

At up to 7.75 kW nominal output power and 65 N·m continuous torque, this motor targets heavy horizontal axes — large gantries, extruder and winder drives, and high-inertia indexing loads — where the driven mechanism itself prevents back-driving and a brake is not required.