MAC093C-0-FS-3-C/110-B-0/S001 by Bosch Rexroth Indramat

The MAC093C-0-FS-3-C/110-B-0/S001 is an AC servo motor from Bosch Rexroth Indramat in the MAC AC Servo Motors series. It is intended for analog drive systems, where commanded current is converted into controlled rotary motion for process axes, feed mechanisms, and other speed-regulated machine functions. The motor uses size 093 with length C, giving it the mechanical envelope associated with that frame. Heat is removed by natural convection, so no external fan is required. The unit is supplied without a blocking brake, which means holding force at standstill must be provided by the machine or the drive.

The motor can deliver 19.5 Nm of continuous stall torque while drawing 35 A of continuous stall current under rated thermal conditions, making it suitable for continuous low-speed loading without immediate derating. For short acceleration demands, the winding can accept up to 173 A of peak pulse current, which gives the drive additional current headroom during transient events. A nominal speed of 3000 rpm supports direct coupling to belt drives or gear stages while preserving a broad operating range. The housing carries an IP65 rating for resistance to dust and water jets. Power conductors connect on side B, and a standard tachogenerator on the second shaft end provides 3 V per 1000 rpm for velocity monitoring.

The flange uses a 110 mm centering diameter to align the motor accurately to the machine face and reduce mounting offset. Its thermal time constant is 50 min, which shows how quickly the windings approach steady-state temperature after a change in load. The motor has a torque constant of 0.579 Nm/A, relating current to produced torque in normal operation. Winding inductance is 2.9 mH, and winding resistance is 0.175 ? at 20 °C, values that influence current response and voltage demand in the connected analog amplifier. Winding code FS identifies the conductor layout used in this version.