Product Description:

The MSM031C-0300-NN-M5-MH1 is a compact synchronous motor manufactured by Bosch Rexroth Indramat for the MSM IndraDyn S Synchronous Motors series. It is used in general-purpose automation where a servo drive must deliver precise rotary motion to indexing tables, pick-and-place heads, or small conveyor sections. The motor converts electrical energy into controlled mechanical motion while keeping its dimensions small enough for crowded machine spaces. Its compact format also suits robot wrists and other moving assemblies where limited space and added inertia can affect cycle time.

At standstill, the rotor can apply a continuous torque of 1.30 Nm, which is suitable for holding or slowly indexing light loads without overheating. Heat is removed through natural convection, so air must circulate freely around the housing. Because cooling is passive, the motor can be installed without separate fans or air ducts, which helps keep surrounding machine layouts simple. The integrated brake is electrically released; it engages when power is removed and disengages when voltage is applied. For vertical axes or controlled stops, the brake provides up to 1.27 Nm of holding torque. The motor uses frame size 031, which helps it fit compact gearheads and tightly spaced mounting layouts.

The motor has length code C, which gives a balance of mass and inertia for quick acceleration while preserving continuous thermal capacity. Winding code 0300 identifies the electrical winding used with compatible IndraDrive controllers. A plain shaft simplifies coupling to pulleys or precision clamping hubs, and the unit is a synchronous motor with sinusoidal back EMF. This arrangement supports smooth torque production and predictable response during repeated short moves and frequent starts and stops. The design does not include a shaft seal, so extra protection may be needed where fluids or fine particulates are present.