Product Description:

Bosch Rexroth Indramat manufactures the QSY071B-030-HG1-UN as part of its QSY Synchronous Servo Motors series. The motor is a brushless, permanent-magnet unit intended for closed-loop positioning and speed control in industrial automation equipment such as machine-tool feed axes, pick-and-place arms, and packaging stations. When paired with a compatible drive, it converts electrical energy into shaft power so that motion sequences can be repeated with minimal deviation.

The motor has four pole pairs and delivers a rated mechanical output of 1.7 kW at a shaft speed of 3000 rpm. Under these conditions, the motor produces a continuous torque of 5.5 Nm from a bus voltage of 323 V and draws a phase current of 4.4 A. This combination of voltage, current, and electromagnetic design establishes the thermal equilibrium point at which copper losses are balanced by heat dissipation through the frame. The number of pole pairs influences commutation frequency and encoder resolution, enabling precise servo regulation without exceeding the switching limits of standard inverter equipment.

The motor accommodates acceleration, load shocks, and holding demands beyond its continuous operating range. The drive can command a peak torque of 32.0 Nm by allowing the stator current to rise briefly to 29.0 A; this surge provides additional angular momentum during rapid indexing or cutter engagement. When the rotor is locked, the motor resists displacement with a stall torque of 9.0 Nm and a corresponding stall current of 7.2 A, supporting vertical axes or tensioned webs without an additional brake. Power stages, overload monitoring, and mechanical couplings must accommodate the transient stresses imposed during startup or emergency stops. Peak operation must remain brief enough to prevent excessive winding temperature and preserve stable motor performance during repeated operating cycles.