Product Description:

Bosch Rexroth Indramat builds the MHD115B-058-NG1-BA within the MHD Synchronous Motors series. The unit is a servo motor that converts drive commands into rotary motion for positioning axes, indexing tables, or packaging heads in automated machinery. Its product type suits applications that need precise speed and torque regulation during continuous duty as well as rapid start-stop cycles. When paired with a compatible drive, it supports controlled acceleration, deceleration, and repeatable motion on equipment that must return to the same position many times during operation.

The motor attaches to a machine frame with a centering collar of 180 mm, and its flange square is 192 mm. These mounting dimensions help the housing seat accurately on compatible machine interfaces and support rigid alignment. At standstill it can deliver 50.0 Nm continuously, which is useful for axes that carry substantial static load between moves. Heat is removed by natural convection, so no external blower or liquid circuit is required. Position data comes from digital servo feedback (HSF), supplying high-resolution incremental signals to the drive controller for tight velocity loops. The rotor and stator use winding code 058, which sets the phase resistance and inductance for matching current ratings. Motor length B balances torque density against installation depth.

A factory-mounted brake supplies 70.0 Nm of stopping torque, allowing vertical axes to hold position when power is removed. Electrical release is provided through an output connector. The drivetrain uses a plain shaft that is ground for keyed or shrink-fit couplings, and a shaft seal is installed to help prevent lubricant migration into the stator cavity. The shaft arrangement supports common coupling methods used on servo-driven equipment. Position is recorded as relative values, so the control system must run a homing routine after each power-up before absolute machine coordinates are available.