Product Description:

The MSK040B-0450-NN-S3-UG0-NNNN is a compact servomotor from Bosch Rexroth Indramat’s MSK IndraDyn S Synchronous Motors series. In automated machinery, this motor converts regulated drive current into precise rotary motion that can be tightly coordinated by a CNC or PLC. High position repeatability, an integrated feedback interface, and a sealed housing allow it to actuate packaging axes, pick-and-place modules, or metering pumps without external encoders or added protective covers.

Thermal management relies on natural convection, meaning heat is released through the housing fins rather than a forced-air blower; this simplifies installation in cabinets that lack ducted airflow. The housing carries an IP65 rating, so internal windings and bearings are protected against dust ingress and low-pressure water jets. A 240° rotatable encoder connector lets the cable exit be oriented after mounting, reducing strain in tight enclosures. Position data use the Hiperface serial protocol, which combines absolute feedback and commutation signals on a single pair to minimize wiring. Inside the feedback unit, a capacitive sensing element tracks rotor movement, providing immunity to magnetic fields that could disturb optical devices.

Resolution is fixed at 16 signal periods, giving the drive controller a set number of electrical counts per mechanical revolution for fine speed regulation. Because the encoder is single-turn, position is retained within one revolution but resets after a full 360-degree rotation, which is adequate for short-stroke rotary tasks. The motor operates reliably between 0–40 °C, matching typical shop-floor ambient limits, and its windings conform to class 155 insulation so continuous copper temperature may reach 155 °C without breakdown. A plain shaft eases coupling to gearheads, and the unit is supplied without a holding brake, so any power-off load retention must be handled by external clamps or drive torque.