Product Description:

The QSK061B-0300-NN-S5-UG0-NNNN is a synchronous servo motor developed by Bosch Rexroth Indramat in the QSK Servo Motors series. Serving as a precise rotary actuator in automated machinery, it converts drive-supplied current into tightly regulated torque and position for indexing, packaging, and assembly stations. The part designation combines frame, winding, and option codes that tailor the motor to medium-power applications where fast response and limited maintenance downtime are required.

The motor uses frame size 061 and frame length B, giving it a short body that fits tight machine envelopes while preserving magnetic stack depth for torque generation. The winding code 0300 indicates the resistance and inductance expected by compatible QSK drives, so current loops remain predictable during operation. Cooling is provided by natural convection, with airflow over the housing removing heat without requiring a fan. Because the unit is supplied without a holding brake, the machine must rely on drive torque or an external clamp to secure vertical loads when power is removed. A plain shaft with a sealing ring helps retain lubricant and prevents dust from entering through the shaft opening.

The optical encoder produces 128 increments per revolution and communicates through the Hiperface interface. This optical feedback system provides high signal quality with minimal mechanical wear. Its single-turn format returns an absolute position within one revolution, which is suitable for many point-to-point axes while keeping the transmitted data compact. Power and sensor conductors connect through a plug that rotates through 240°, allowing the connector to be repositioned to reduce cable strain in different mounting orientations. The adjustable connection also permits cleaner cable routing around nearby machine components and helps prevent sharp bends at the motor housing.