Product Description:

The MSS102F-0800-FA-N0CN-NNNN synchronous motor is produced by Bosch Rexroth Indramat and belongs to the MSS Synchronous IndraDyn H Motors series. It is intended for direct-drive axes in industrial automation, supplying electronically commutated torque without mechanical transmission elements. A sealed water jacket surrounds the stator laminations so thermal energy is carried away by circulating fluid rather than ambient air, allowing the machine to hold its electrical ratings during extended duty cycles. This configuration supports high-speed processes where compact dimensions and stable temperatures are essential.

At the nominal operating point, the motor delivers 21.8 kW of mechanical power. This output is achieved while the shaft turns at 8000 rpm, which sets the electrical frequency the inverter must generate. The corresponding continuous shaft torque is 26 Nm, produced when the stator draws a rated current of 43 A through 10 mm² power leads. With a winding resistance of 0.31 Ω, copper losses remain within the cooling capacity of the water jacket. A torque constant of 0.6 Nm/A links phase current directly to developed torque, simplifying control loop calibration. To remove the generated heat, the integrated channel requires a coolant flow of 4 L/min. The 306 mm jacket length and 120 mm outside diameter let the unit fit inside tightly packed spindle housings.

For transient events such as rapid acceleration, the drive can generate up to 68 Nm of torque, provided the inverter supplies a peak phase current of 100 A. This short-term headroom permits quick speed changes without exceeding thermal limits established by the cooling system. A back-electromotive-force constant of 53 V/1000 rpm indicates the minimum DC-bus voltage needed to maintain regulation as speed increases. Because the housing is classified only to IP00, the device must be mounted inside a protected enclosure where dust and splash exposure are controlled.