Product Description:

The MSM040B-0300-NN-M0-CG1 is a synchronous servo unit produced by Bosch Rexroth Indramat within the MSM IndraDyn S Synchronous Motors series. It is intended for compact point-to-point positioning or indexing axes where a permanent-magnet motor pairs with a digital drive controller to deliver precise torque and speed regulation in automated machinery. Its compact format suits equipment that requires accurate motion in limited installation space.

This model incorporates an electrically released brake, meaning the brake is held by spring force and opens when power is applied, so motion can be stopped safely during a power loss. Heat is removed by natural convection; the housing relies on ambient airflow rather than forced cooling, which simplifies installation in tight cabinets. Power, feedback, and brake conductors exit through a fixed cable tail, reducing connector count and providing strain relief where continuous flexing is unnecessary. Rotor position is reported by a multi-turn absolute encoder, allowing the drive to read the shaft angle and full revolution count immediately after power-up without a homing cycle. When engaged, the brake supplies 2.45 Nm of static holding torque, which is suitable for light vertical loads or for preventing drift on horizontal axes during service.

The mechanical package follows a motor length B layout inside the MSM 040 frame. The frame designation of motor size 040 corresponds to a stator diameter suited to low-voltage drives while keeping overall mass low for gantry or tool head mounting. Inside the stator, winding code 0300 identifies the turns count and conductor gauge that set the torque constant and rated speed used by compatible IndraDrive amplifiers. A built-in holding brake remains engaged at zero power, providing a passive safety measure without an external clamp or clutch.