MSS160A-020-A1N-NN Bosch Rexroth Indramat
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The Bosch Rexroth Indramat MSS160A-020-A1N-NN is a three-phase synchronous motor from the MSS Synchronous IndraDyn H Motors series. It features a liquid-cooled, open kit motor design with an axial attractive force of 370 Newtons and a radial attractive force of 138 Newtons. The motor utilizes a permanent-magnet excitation type, supports a maximum coolant pressure of 6 bar, and has a protection class of IP00.
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Product Description:
The MSS160A-020-A1N-NN motor is built by Bosch Rexroth Indramat and belongs to the MSS Synchronous IndraDyn H Motors series. It is a three-phase synchronous kit motor supplied as an open stator-rotor set for direct integration into a machine frame. In production cells, presses, or spindle drives, this design delivers smooth torque while eliminating the additional mass of a conventional motor housing. The unit serves as the electromagnetic core around which the machine builder adds a custom cooling jacket and mechanical support, allowing compact, high-speed positioning within industrial automation lines.
It employs a liquid-cooled jacket that carries a water-glycol mixture or similar coolant around the stator, and the flow may reach a maximum pressure of 6 bar without jeopardizing the seals. Because the motor has an IP00 protection rating, the machine enclosure must provide the necessary protection against contact and the ingress of foreign material. Power conductors with a cross-sectional area of 2.5 mm² exit through a 13 mm harness, simplifying cable routing in confined spaces. Eight M5 stator fixing threads, each 17 mm deep, align the lamination stack, while a separate M6 grounding thread with a depth of 17 mm bonds the assembly to the protective earth circuit. An axial attractive force of 370 N acts between the rotor and stator, so the bearing system must be sized to manage this preload during operation.
The radial magnetic pull is limited to 138 N, reducing side loading on precision bearings during rapid acceleration. Continuous temperature feedback is provided by a KTY84-130 sensor embedded in the winding, while a separate SNM150.DK thermal switch interrupts drive power if overheating occurs. The motor uses permanent-magnet excitation, so the control system does not require a separate field supply and can respond immediately when current is commanded. The temperature sensor allows the connected drive to monitor winding heat continuously, while the independent switch provides a direct protective response if the allowable thermal limit is exceeded.
