MHD041B-144-PP1-UN Bosch Rexroth Indramat
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MPN: R911280213
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The Bosch Rexroth Indramat MHD041B-144-PP1-UN is a servo motor from the MHD Synchronous Motors series with a keyed shaft, a centering diameter of 50 mm, and an 82 mm flange size. It features a continuous torque at standstill of 2.7 Nm and uses liquid cooling for its housing. The motor includes a digital servo feedback encoder for absolute position detection and is equipped with a holding brake providing 2.2 Nm of torque.
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Product Description:
The MHD041B-144-PP1-UN is a rotary servo unit produced by Bosch Rexroth Indramat for the MHD Synchronous Motors series. It is intended to couple with Indramat drive controllers and deliver precise, closed-loop motion for pick-and-place gantries, feed drives, and light assembly stations. By converting amplified three-phase power into controlled shaft rotation, the motor provides programmable speed and position control that supports repeatable manufacturing cycles in automated machinery. Its compact mechanical envelope allows installation in machines where space and thermal loads are constrained.
Mechanical interface dimensions are anchored by a centering pilot of 50 mm, while the square mounting flange measures 82 mm, allowing direct attachment to standard gearbox or frame plates without additional adapters. The design follows frame size 041 and motor length code B, giving the stator a slim profile for tight axis spacing. Inside the stator, winding code 144 sets the electrical characteristics that support a continuous standstill torque of 2.7 Nm. Heat produced at that load is removed through liquid cooling passages molded into the housing, so continuous operation does not rely on external airflow. Torque is transmitted through a keyed shaft, and a fitted shaft seal helps prevent lubricant migration into the motor interior. Power and feedback leave the unit through separate circular connectors that keep high-current lines away from signal conductors.
Feedback is supplied by digital servo electronics that furnish multi-turn absolute position data for more than 4096 revolutions to the controller, eliminating the need for homing after power loss. For vertical or suspended loads, an integrated brake delivers 2.2 Nm of static torque to lock the rotor when drive power is switched off. The power connector is turnable through 270°, so the plug can be aligned with conduit runs while maintaining full sealing integrity.
