SD-B4.180.020-00.000

The SD-B4.180.020-00.000 permanent-field servomotor by Bosch Rexroth Indramat belongs to the prestigious SD Magnet Motors series and is designed for high-precision inverter operation. Featuring a Nominal Speed: 2000 rpm and a robust Shaft Diameter: 24 mm, this unit delivers a constant torque throughout the entire speed-torque characteristic range. Equipped with ferrite permanent magnets in the rotor and a brushless tacho, it operates maintenance-free while ensuring accurate feedback in position and velocity servo loops.

This servomotor is built to stringent industrial standards, offering IP 54 protection rating with mated connectors and specified cable diameter to guard against dust and splashed water. The device incorporates an NTC thermostat in its winding to monitor temperature, and its mechanical time constant of 5.8 ms at 20 °C guarantees rapid dynamic response. Noise emission is limited to 64 dB (A) at 1 m, and the tacho voltage ripple remains below 1.5%, ensuring signal integrity. The shaft features a keyway and featherkey according to DIN 6885 specifications, while ball bearings at the flange end provide a minimum service life of 20,000 operating hours.

Designed for seamless integration, the motor must be paired with an inverter matched to its current ratings and is fully compatible with the TA series inverter (peak current rating 17 A / 35 A). Protective plastic caps must be fitted on connectors during transport to prevent damage, and only the tacho board and mating connectors may be dismantled for service. Note that vertical (IM V1) and diagonal mounting are not permitted, and the unit may exhibit high surface temperatures during operation. In industrial applications, this servomotor delivers reliable, efficient performance—combining durability, precision, and ease of integration for advanced automation systems.