MHD115B-058-NG0-BN

The MHD115B-058-NG0-BN from Bosch Rexroth Indramat is a high-performance MHD Synchronous Motors series Servo Motor engineered for demanding industrial applications. This robust unit is designated as Motor Size 115 with a Winding Code 058 and Motor Length B for standardized mounting and easy integration. Featuring a Centering diameter of 180 mm and a Flange size of 192 mm, the motor combines compact dimensions with substantial power capacity. With a Continuous Torque at Standstill of 50.0 Nm and a peak attainable speed of 6000 rpm, the MHD115B-058-NG0-BN delivers reliable dynamic response across a wide operating range.

The motor’s electrical and mechanical specifications underline its technical excellence. A Winding inductance of 1.6 mH and Winding resistance of 1.45 Ω at 20 °C ensure stable current handling, while the Voltage constant of 81.8 V/1000 min⁻¹ and a Torque constant of 0.9 Nm/A optimize energy conversion efficiency. Rotor dynamics benefit from a Moment of inertia of 93.2 × 10⁻⁴ kg·m², facilitating precise acceleration control. Position feedback is provided by a Digital servo feedback (HSF) Encoder Type with Type of Position Detection relative logic for accurate speed and position monitoring. The design incorporates a Plain shaft with integrated Shaft Seal to maintain alignment and prevent contamination.

Operational reliability is further enhanced by advanced thermal and protection features. The motor employs both Liquid cooling and Natural convection methods, with thermal time constants of 30 min (liquid) and 100 min (natural) to sustain rated performance. It operates without a Holding Brake, reducing mechanical complexity, and meets IP65 protection standards to guard against dust ingress and low-pressure water jets. A Power Connection Direction to side B configuration and an Output Connector simplify cable routing in confined control cabinets. At its rated speed of 4000 rpm under liquid cooling, the motor produces a continuous torque of 56.4 Nm, supports a maximum torque of 160 Nm at 280 A, and delivers a rated power of 3.2 kW at 125 V.

Integration flexibility is a hallmark of the MHD series design. The compact footprint defined by its 180 mm centering diameter and side-mounted power connector allows straightforward retrofitting into existing drives and multi-axis systems. Its compatibility with Bosch Rexroth Indramat drive controllers ensures seamless communication, automatic parameter recognition, and high-precision motion control. Ideal for machine tools, robotic manipulators, packaging machinery, and automated assembly lines, the MHD115B-058-NG0-BN excels where precision, repeatability, and robust performance are critical.