MST210C-0050-FT-N0CN-NNNN Bosch Rexroth Indramat
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MPN: R911295697
The Bosch Rexroth Indramat MST210C-0050-FT-N0CN-NNNN is part of the MST Synchronous Torque Motors series. It offers a rated power of 6.9 kW and delivers a rated torque of 120 Nm at 500 rpm. The motor features a maximum current of 100 Amps and uses a cooling jacket that requires a coolant flow of 6.0 liters per minute.
Internal Product Review
The MST210C-0050-FT-N0CN-NNNN is a Bosch Rexroth Indramat synchronous torque motor with 120 Nm rated torque and 6.9 kW rated power. From a drive engineering standpoint, 4.80 Nm/A torque constant and 250 Nm maximum torque give the unit impressive low-speed authority.
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Product Description:
The MST210C-0050-FT-N0CN-NNNN is a stator from the MST Synchronous Torque Motors series manufactured by Bosch Rexroth Indramat. This frameless, water-cooled unit is intended for direct-drive rotary tables, printing cylinders, and plastic-extrusion screws where steady torque is needed without gear reduction. By embedding the stator in the machine frame and pairing it with a matching rotor, the machine can achieve accurate low-speed motion while reducing backlash and mechanical wear in continuous-duty industrial automation.
When paired with a matching rotor, the unit provides a continuous torque of 120 Nm at its rated speed of 500 rpm, resulting in a mechanical output of 6.9 kW. A torque constant of 4.80 Nm/A links current to produced torque, which simplifies current-loop tuning in the drive controller. During transient indexing moves, the stator withstands up to 250 Nm, allowing short bursts of acceleration without exceeding magnetic saturation. Electrical characteristics supporting these figures include a winding resistance of 1.23 Ω that contributes to copper loss and an inductance of 7.6 mH that shapes current ripple. Thermal behavior is influenced by a 3.0 minute thermal time constant, so temperature rises quickly if liquid flow stops, and continuous cooling through the integrated jacket prevents such excursions.
Normal operation draws 25 A, while peak moves can demand 100 A; both values must be accommodated by the chosen drive and cabling. The stainless cooling jacket measures 120 mm in axial length and 230 mm in outside diameter, giving a compact profile for retrofits. A flow of 6.0 l/min of conditioned water keeps winding temperature within limits, and the 4.0 mm² power leads fit standard industrial connectors. With a stator mass of 11.5 kg, the assembly is light enough for cantilever mounting yet carries sufficient thermal inertia for stable continuous torque delivery.
