QSY041B-030-HG1-UN Bosch Rexroth Indramat
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MPN: R911279312
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The Bosch Rexroth Indramat QSY041B-030-HG1-UN is part of the QSY Synchronous Servo Motors series and features a natural cooling system. It delivers a rated power output of 0.8 kW with a rated speed of 3000 rpm and a rated torque of 2.5 Nm. The motor uses an ERN 1387 encoder and has an IP63 protection class.
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Product Description:
The QSY041B-030-HG1-UN is a synchronous servo motor produced by Bosch Rexroth Indramat within the QSY Synchronous Servo Motors series. Designed as a compact rotary actuator for industrial automation, it provides closed-loop positioning through an ERN 1387 incremental encoder while a KTY 84-130 sensor monitors the stator temperature. The motor uses the IM B5 mounting design, allowing flange installation on gearboxes or machine frames without foot support. Its three pole pairs provide the electrical angle information needed for precise drive control and effective motor commutation.
At its continuous operating point, the unit outputs 0.8 kW of mechanical power under conditions based on a 100 K winding temperature rise. This duty point combines a rated torque of 2.5 Nm with a rated speed of 3000 rpm, providing suitable performance for positioning and speed-controlled applications. Reaching this operating point requires a phase current of 2.8 A, while the drive electronics supply a line-to-line voltage of 244 V. These electrical characteristics allow the motor to operate with a compatible Indramat digital drive. The selected drive must regulate the delivered current and voltage according to the motor’s operating conditions and thermal limits.
For brief dynamic events, the winding accepts a peak current of 13.5 A, enabling rapid acceleration and a maximum torque of 11.3 Nm before applicable operating limits are reached. Short-term stalling conditions are supported at 3.3 A and 3.0 Nm, and the motor uses class F insulation to withstand the associated winding temperature. The housing has an IP63 protection rating, guarding the internal components against dust and water spray. Heat is dissipated through natural cooling, so adequate clearance around the housing is necessary to support airflow and heat transfer. When used with the ERN 1387 encoder, the drive receives the feedback needed for accurate commutation and controlled holding at zero speed. The drive must remain energized to produce holding torque because no mechanical holding brake is identified for this motor.
