Product Description:

The MSK075E-0450-NN-M2-UP0-RNNN is a synchronous servo motor from Bosch Rexroth Indramat in the MSK IndraDyn S Synchronous Motors series. With motor size 075 and length code E, this unit provides rotary motion for positioning axes and feed drives in automated machinery where fast response and high accuracy are required. It is suited for equipment such as packaging systems, handling units, and machine tools that depend on repeatable closed-loop motion. The motor is intended for applications that require accurate acceleration, steady speed regulation, and repeatable positioning under varying load conditions. Winding code 0450 indicates the electrical characteristics used with compatible Rexroth drive controllers. Because it has no holding brake, a stopped load must be secured by external clamping or drive torque.

Heat is removed through natural convection, so enclosure layout must allow vertical air movement around the stator. The housing has an IP65 rating, which keeps out dust and resists low-pressure water jets when the motor is installed outside a control cabinet. Position feedback is generated by an EnDat2.1 optical encoder that provides 2048 signal periods per mechanical revolution, giving the drive fine resolution for speed and position control. This feedback arrangement supports precise commutation and closed-loop control across a wide operating range. The feedback device is a Multiturn Absolute type, so the shaft position remains available after a power interruption and repeated homing is not required for normal restart. A rotatable 240° connector also helps simplify cable routing in compact machine spaces.

Mechanical power is transmitted through a shaft with keyway, which provides positive torque transfer to pulleys or couplings without depending only on shaft friction. The motor is intended for ambient temperatures from 0 to 40 °C, so it can operate in standard factory conditions without thermal derating. The design includes increased concentricity, which helps reduce radial runout and supports accurate rotation at higher speeds. The windings use insulation class 155, which allows a winding temperature up to 155 °C during continuous duty. This insulation level is commonly used in industrial servo applications where winding heat must remain controlled during sustained operation.