Product Description:

The SD-B4.180.020-01.010 is a brushless servo motor produced by Bosch Rexroth Indramat for the SD Magnet Motors series. In automated assembly cells and material-handling stations, the unit converts controlled current from a matched servo amplifier into rotational motion that can be finely regulated for position or velocity tasks. By combining permanent-magnet excitation with electronic feedback, it serves as the mechanical drive element in closed-loop axes that require stable torque at low and moderate speeds, repeatable response during starts and stops, and smooth operation throughout frequent duty cycles.

Thermal and braking parameters describe the motor’s operating range. A regenerative stop can absorb 293 Ws of brake energy, which is routed into a resistor network composed of 3.3 Ω elements. The housing carries 3 resistors, and their dissipation limit is monitored against a tolerance window of +10% to help prevent overload. The motor has a flange diameter of 142 mm, and a shaft size of ø 24 × 50 mm enables direct coupling to gearboxes. At standstill, the motor supplies 18.0 Nm of torque, and it reaches a rated speed of 2000 rpm during cyclic motion sequences. A ferrite magnet rotor maintains field strength without rare-earth materials, and the assembly connects to the SM10/20-T servo module through the KM1100-T capacitor module for controlled energy return.

Signal integrity is handled by incremental encoder outputs A, B, and C together with complementary tracks 1, 2, and 3, carried on a feedback line made of 10 × 0.14 mm² conductors plus 4 × 0.5 mm² power cores. The cabling may extend to 100 m without timing loss because the driver provides a balanced ±15 V DC supply to the transducer electronics, which supports stable feedback transmission over longer routing distances. A brushless DC tacho generates 2.7 V per 1000 rpm with a linearity window of ±5 %, and a thermistor embedded in the stator trips at 140 °C to disengage the drive if an overtemperature condition occurs.