QSK075E-0300-NN-S5-UG1-NNNN Bosch Rexroth Indramat
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The Bosch Rexroth Indramat QSK075E-0300-NN-S5-UG1-NNNN is a synchronous servo motor from the QSK Servo Motors series. It features a rotatable plug connection at 240°, natural convection cooling, and has encoder technology that is optical with Hiperface interface and 128 increments. This model has a plain shaft with a sealing ring, a frame size of 075, and includes an electrically-released holding brake with a torque of 23 Nm.
Internal Product Review
The QSK075E-0300-NN-S5-UG1-NNNN is a synchronous servo motor featuring natural convection cooling and a rotatable 240° plug connection. Optical feedback through the Hiperface interface supports precise position control and clean signal transmission. An electrically released holding brake rated at 23 Nm adds strong axis retention, a standout feature for controlled motion applications.
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Product Description:
The QSK075E-0300-NN-S5-UG1-NNNN belongs to the QSK Servo Motors series from Bosch Rexroth Indramat. It is a synchronous servo motor intended for axis drives that demand precise position and velocity control within automated machines and handling modules. By combining electronic commutation with a permanent-magnet rotor, the unit converts electrical commands from a drive controller into controlled rotary motion for tooling, conveyors, or assembly fixtures. This operating principle supports responsive torque production across repeated acceleration, positioning, and deceleration cycles.
The motor body has a frame size of 075 and carries the E length code, so its stack depth increases the active magnetic area without altering the mounting pitch. A winding code of 0300 indicates the copper fill and impedance that the companion inverter must match for rated current delivery. Heat from the stator is removed by natural convection, and the housing allows air to circulate around the fins to keep the winding temperature within insulation limits. Rotor position is captured by an optical encoder that delivers 128 increments per revolution. Communication with the drive occurs over the Hiperface interface, allowing power-up initialization and high-speed feedback. The sensing system uses optical technology to minimize hysteresis and support stable position measurements as the shaft speed changes.
An electrically released brake provides 23 Nm of holding torque, clamping the shaft whenever control power is removed. This brake can prevent a stationary load from moving when the drive is disabled or the machine is shut down. Field wiring enters through a plug rotatable through 240°, which lets cables exit in several directions to accommodate confined installation spaces. Output torque is delivered through a plain shaft with a shaft sealing ring; the seal blocks lubricant migration and protects the bearing set from splashes. The encoder provides single-turn feedback, so absolute position is referenced within one mechanical revolution. Its low-jitter signal supports accurate interpolation when the motor operates at high speeds.
