Product Description:

The MSS160H-020-A1N-NN is an open kit motor that belongs to the MSS Synchronous IndraDyn H Motors series produced by Bosch Rexroth Indramat. As a three-phase synchronous unit built with permanent-magnet excitation, it supplies torque directly to machine shafts without a separate housing. This layout makes it suitable for compact, high-power industrial automation axes where the motor is integrated into the machine frame.

This model relies on liquid cooling, so process fluid must circulate through the stator jacket, and the circuit can be pressurized up to 6 bar without leaking. Continuous operation is allowed up to a site altitude of 1000 m, preventing thermal derating at standard plant elevations. The winding insulation endures ambient temperatures up to 40 °C, while service can begin from 0 °C when the equipment is dormant. Because no motor feedback element is fitted, the drive controller must read external position sensors or operate in sensorless mode. Power conductors exit the thick end of the stator through a factory-installed cable built with AWG 8 leads, giving current capacity consistent with the torque class of this frame. An aluminum mantle carries the coolant and anchors the laminated core, limiting magnetic losses while keeping mass low.

A minimum bend radius of 4 x D must be observed when routing the supply cable to avoid stressing the conductors. The open construction is rated IP00, meaning the installation must provide its own touch protection and contamination control. Cable slack is fixed by the factory-installed 1.5 m pigtail, which helps with routing in tight enclosures. The stator shell is formed from an aluminum mantle, which spreads heat uniformly to the coolant channel and minimizes differential expansion around the 22 mm strand bundle inside each slot.