Product Description:

The MST530R-0011-FH-N0KR-NNNN is a frameless synchronous torque motor manufactured by Bosch Rexroth Indramat within the MST Synchronous Torque Motors series. It is supplied as a stator-rotor set for direct-drive assemblies. This arrangement produces high continuous torque at low shaft speed, allowing precise position control in rotary tables, plastic extruders, and similar automation axes without the need for a gearbox.

Under nominal conditions, the motor delivers 43.5 kW of mechanical power while turning at 110 rpm. To sustain that operating point, it draws a phase current of 104.7 A and develops a standstill torque of 4320 Nm, so clamping force remains available even when motion stops. A torque constant of 36.10 Nm/A links drive current directly to output torque for closed-loop control. Rated torque is 3780 Nm, and heat generated by copper losses is removed through a liquid circuit that requires 16.1 l/min of coolant. Electrical characteristics include a voltage constant of 4.139 V/rpm, a winding inductance of 5.5 mH, and a winding resistance of 0.397 Ω. The leakage capacitance of 41.4 nF affects the motor’s common-mode current behavior with respect to the grounding system.

Application limits are set higher than the rated point. The inverter may deliver up to 339 A for short intervals, pushing speed to 175 rpm and enabling a peak torque of 8460 Nm for rapid acceleration or disturbance rejection. During such overloads, the stator windings can dissipate 11.20 kW of thermal power, provided coolant flow is maintained. Power terminals accept two conductors of 16.0 mm², which helps reduce voltage drop over longer cable runs. The motor’s leakage capacitance and low inductance also influence EMC filter selection so conducted emissions stay within drive cabinet limits.