QSK075C-0300-NN-S5-UG0-NNNN Bosch Rexroth Indramat
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The Bosch Rexroth Indramat QSK075C-0300-NN-S5-UG0-NNNN is a synchronous servo motor in the QSK Servo Motors series. It features a natural convection cooling system and uses an optical Hiperface encoder with 128 increments and singleturn technology. The frame size is 075 with a C length, and the plain shaft includes a shaft sealing ring.
Internal Product Review
The QSK075C-0300-NN-S5-UG0-NNNN is a Bosch Rexroth Indramat synchronous servo motor with natural convection cooling. The optical encoder with Hiperface interface supports precise feedback and stable motion control. A rotatable 240° plug connection adds welcome installation flexibility and rounds out a well-executed motor package.
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Product Description:
The QSK075C-0300-NN-S5-UG0-NNNN is produced by Bosch Rexroth Indramat as part of the QSK Servo Motors series. It is intended for precision positioning and velocity control on packaging lines, pick-and-place modules, and automated assembly stations, where tight motion profiles and repeatable torque delivery are required. When paired with compatible Rexroth drive electronics, the motor converts real-time command signals into accurate rotary movement. This control helps machinery maintain consistent cycle times and product tolerances during continuous industrial operation.
Cooling is handled by natural convection, so heat leaves the housing without fans or liquid loops. Power and feedback conductors connect through a plug that rotates through 240°, allowing the cable outlet to point toward a convenient side of the cabinet or machine frame. The unit is supplied without a holding brake, so an external clamp or motor-generated torque must secure a vertical load when power is removed. A plain shaft with a shaft sealing ring helps prevent lubricant loss and blocks airborne contaminants from reaching the motor bearings. Position data is transmitted through the Hiperface protocol, and the optical encoder provides 128 increments per revolution for precise rotor-position feedback. The adjustable connector orientation also reduces unnecessary cable bends when space around the motor is limited.
The feedback chain uses a single-turn format, so the encoder reports absolute position within one mechanical revolution. The drive can track additional revolutions while continuously powered, but the encoder does not retain those turns as multi-turn absolute position data. Winding code 0300 indicates the resistance and inductance values used by compatible inverters to regulate current and produce the required torque. The motor has a frame size of 075 and a frame length of C, providing a square front flange and a medium stator stack depth for installation in confined enclosures. The resulting housing provides suitable mounting clearance while supporting the thermal dissipation available from its fanless design.
