QSY112B-030-HG1-BN Bosch Rexroth Indramat
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The Bosch Rexroth Indramat QSY112B-030-HG1-BN is part of the QSY Synchronous Servo Motors series. This servo motor has a rated output of 1.9 kW, a rated speed of 3000 rpm, and a rated current of 5.4 Amps. It delivers a maximum torque of 102.0 Newton meters and has 4 pole pairs.
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Product Description:
The QSY112B-030-HG1-BN is a synchronous servo motor produced by Bosch Rexroth Indramat for the QSY Synchronous Servo Motors series. The unit converts electrical energy into controlled rotary motion for positioning tables, gantry axes, and other automated machinery that require repeatable velocity and torque profiles. Its electromagnetic assembly, resolver feedback path, and sealed frame allow direct integration with compatible Rexroth digital drive controllers in industrial automation systems. Closed-loop feedback enables the controller to monitor rotor position and adjust motor current as operating conditions change.
The motor has a rated speed of 3000 rpm under nominal supply and load conditions. At this operating point, the electromagnetic circuit develops a rated torque of 6.0 Nm, which corresponds to continuous mechanical power of 1.9 kW. A line-to-line winding voltage of 278 V keeps the back electromotive force within the operating range of the servo drive, while a steady armature current of 5.4 A supports continuous operation within the motor’s thermal limits. The rotor has 4 pole pairs, requiring the drive to produce an electrical frequency four times the mechanical rotational frequency for proper field orientation. This rotor arrangement supports smooth electronic commutation as the controller regulates speed and torque throughout the operating range.
For brief load increases, the motor can produce a peak shaft torque of 102.0 Nm. Reaching this overload level requires a peak phase current of 113.5 A, so the connected amplifier must have an appropriate current limit and sufficient short-term capacity. During holding or indexing operation, the locked rotor produces a stall torque of 32.0 Nm at a stall current of 28.8 A. These stall values indicate the motor’s ability to support a stationary load through applied current when an external brake is not used. The substantial difference between continuous and peak operation permits rapid acceleration during short motion intervals, but the control system must restrict overload duration to prevent excessive winding and magnet temperatures.
