MSS272D-0050-FA-N0CN-NNNN Bosch Rexroth Indramat
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The Bosch Rexroth Indramat MSS272D-0050-FA-N0CN-NNNN is part of the MSS Synchronous IndraDyn H Motors series and features liquid cooling with an axial cooling connector and a G 1/2 cooling inlet thread. This motor has a rated power of 27.5 kW, a rated speed of 500 rpm, and a rated torque output of 525 Nm, with a maximum current of 200 A. It weighs 112.3 kilograms and has six pole pairs.
Internal Product Review
The MSS272D-0050-FA-N0CN-NNNN is a Bosch Rexroth Indramat synchronous IndraDyn H motor with liquid cooling and a cable-conducted axial electrical connection. Rated output is well matched for demanding drive applications, with 27.5 kW rated power and 525 Nm rated torque. High overload capability stands out here, highlighted by 1200 Nm maximum torque.
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Product Description:
The MSS272D-0050-FA-N0CN-NNNN is a frameless stator segment supplied by Bosch Rexroth Indramat for the MSS Synchronous IndraDyn H Motors series. In an automation cell, it is mounted around a custom rotor to generate low-speed, high-torque rotary motion without gear reduction, allowing precise positioning of heavy indexing tables, extruders, or winders. Direct integration of the liquid-cooled winding into the machine frame minimizes external drivetrain components and helps meet space and accuracy targets for continuous-duty production lines.
The stator has a rated power of 27.5 kW, a rated torque of 525 Nm, and a rated speed of 500 rpm. These parameters indicate the mechanical output available under thermal equilibrium when adequate coolant flow is maintained. A rated current of 71 A flows through the 16 mm² power conductors, while short load peaks can draw up to a maximum current of 200 A. The motor has 6 electrical pole pairs, establishing the synchronous relationship between the stator field and rotor magnets so that every electrical cycle advances the shaft by 60 mechanical degrees. This arrangement supports high torque density at low rotational speeds, which is beneficial for direct-drive axes where backlash and routine drivetrain maintenance must be minimized.
Dynamic overload capacity is provided by a maximum torque of 1200 Nm, giving ample headroom for acceleration profiles or tension-control transients. Coolant enters through an axial G 1/2 connector, and the system plumbing must maintain a maximum inlet pressure of 6 bar to protect the internal seals. The complete power and coolant cable bundle has an outer diameter of 22.0 mm, allowing it to pass through machine routing channels in confined spaces. Liquid cooling removes stator heat directly from the copper windings during continuous operation. No encoder is fitted, so an external feedback device can be selected to match the host drive’s control method and the accuracy requirements of the machine. The stator has a mass of 112.3 kg, which provides thermal inertia during cyclic loading and must be considered when designing the supporting machine structure.
