QSY112D-027-HG0-BN Bosch Rexroth Indramat
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The Bosch Rexroth Indramat QSY112D-027-HG0-BN is part of the QSY Synchronous Servo Motors series and features a rated power output of 12.0 kW with a rated speed of 2000 rpm. This servo motor delivers a maximum torque of 185.0 Nm, uses an incremental encoder with 2048 increments, and has a mass of 51.0 kg. The rated voltage is 328 V and the rated current is 23.4 A.
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Product Description:
The QSY112D-027-HG0-BN is a three-phase synchronous servo motor built by Bosch Rexroth Indramat for the QSY Synchronous Servo Motors series. Designed for numerically controlled axes, the unit converts electrical energy into precise rotary motion so drives can position loads quickly and repeatedly in automated machine tools, printing stations, or material-handling gantries. Closed-loop operation is achieved through an incremental encoder mounted on the shaft, allowing the drive controller to monitor actual speed and position in real time.
During continuous duty, the motor supplies a shaft output of 12.0 kW at a rated speed of 2000 rpm. The corresponding continuous torque reaches 57.1 Nm, while the stator draws a rated phase current of 23.4 A from a 328 V DC link. An internal encoder disk provides a resolution of 2048 increments, giving fine velocity feedback for smooth low-speed control and accurate homing routines. Incremental feedback is transmitted through differential signals that interface directly with Rexroth drive electronics. Rotor inertia is 360 kg·cm², so acceleration profiles must account for the stored kinetic energy when servo gains are adjusted. Power leads exit on side B of the housing, which directs the connector toward the drive cabinet in typical vertical mounting arrangements.
The motor reaches a peak torque of 185.0 Nm during short bursts of load, and this demand is supported by a maximum phase current of 100.0 A. For applications requiring static holding force, the motor can maintain a stall torque of 72.0 Nm while the winding carries a stall current of 33.3 A. The motor has an overall mass of 51.0 kg, which must be supported by the machine frame and considered when calculating counterbalances for a moving axis. Its mass and rotor inertia also affect acceleration and deceleration behavior, particularly when the motor is installed on equipment with rapidly reversing motion. The machine structure must provide sufficient rigidity to maintain shaft alignment under continuous and peak torque loads.
