Motor overview and key ratings
The Bosch Rexroth BMI0702T12A is a single-phase servo motor from the BMI series, built for applications needing a compact, high-resolution position loop. It carries an absolute multiturn SinCos Hiperface feedback and an integrated EMC filter, so you can skip the external line filter in most panels. The motor delivers 2.2 N.m nominal torque at 230 V single-phase, and 1.7 N.m at 115 V — the torque constant sits at 0.63 N.m/A at 20 °C. Nominal speed is 4000 rpm on 230 V, dropping to 1700 rpm on 115 V, with nominal output power of 700 W and 400 W respectively. Peak stall torque reaches 58.4 lbf.in (6.6 N.m) at both supply voltages, giving you headroom for acceleration transients. The maximum current Irms is 17.7 A on either line voltage. Stator resistance is 2.7 Ω and stator inductance 7.8 mH at 20 °C, which matters when tuning the current loop in the drive.
Mechanical fit and mounting
Flange size is 70 mm (international standard), with a centring collar of 60 mm diameter and 2.5 mm depth. Mounting hole diameter is 5.5 mm. The shaft is keyed, 11 mm diameter and 23 mm long, and there is no second shaft end. Overall length is 268 mm. Protection is IP65 on the housing and IP54 on the shaft — suited for environments with dust or splash, but keep the shaft seal dry in washdown zones. Cooling is natural convection, so ensure free airflow around the motor body. Mounting support is listed as 'International standard flange', meaning it fits common face-mount patterns without adapter plates.
The motor accepts a wide supply range of 100–240 V, 50/60 Hz, so it works globally without voltage variant changes.