MSS312H-0085-FR-N0CN-NNL3 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat MSS312H-0085-FR-N0CN-NNL3 is part of the MSS Synchronous IndraDyn H Motors series and features an open kit motor design. This motor includes an axial coolant port of G 1/2, a radial coolant port of G 1/4, and a degree of protection rated at IP00. It has a maximum coolant pressure of 6 bar, a required coolant flow of 8.7 liters per minute, and uses a connection cable for electrical connection.
Internal Product Review
The MSS312H-0085-FR-N0CN-NNL3 is an open kit synchronous motor with IP00 protection, well suited for integrated machine designs. Connection cable interfacing and a KTY84-130 external temperature sensor support clean installation and dependable thermal monitoring. Cooling performance stands out with 8.7 l/min required coolant flow and 6 bar maximum coolant pressure.
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Product Description:
The MSS312H-0085-FR-N0CN-NNL3 is an open stator assembly belonging to the MSS Synchronous IndraDyn H Motors series produced by Bosch Rexroth Indramat. Intended for mounting inside custom machine housings, the kit-style motor supplies high continuous torque while relying on a dedicated coolant circuit rather than an enclosed frame. In automated presses, extruders, and spindle drives, it delivers direct electromagnetic power without the added mass of a complete motor housing.
Liquid management dominates the installation requirements of this motor. An axial supply port with a thread size of G 1/2 brings coolant to the coil bundle, while a secondary radial port of G 1/4 provides the return path. Maintaining a flow rate of 8.7 l/min helps keep copper temperatures within normal operating limits, and the hydraulic path has a nominal pressure drop of only 0.5 bar, which reduces pump load. System components must tolerate up to 6 bar, because that is the maximum allowable static pressure inside the winding jacket. The axial port is secured by an M30 × 1.5 mounting thread, so standard industrial fittings can be used. The unit uses a power cable with two 25 mm² conductors to carry stator current.
As a kit device, the stator is supplied without an enclosure, so its protection rating is limited to IP00. The surrounding machine housing must therefore provide sealing and operator protection. Thermal monitoring is handled by a KTY84-130 sensor that reports coil temperature to the drive controller for derating or shutdown. The stator has 14 clamping holes on each face, along with M8 × 16 mm deep fixing threads that secure the lamination stack to a steel back plate. Electrical power reaches the windings through a preassembled connection cable matched to the stated conductor size. When deployed below 1000 m altitude, no output derating is required, which keeps performance predictable in most factory settings.
