MSM031B-R300-NN-M0-CH1 Bosch Rexroth Indramat
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MPN: R911325134
The Bosch Rexroth Indramat MSM031B-R300-NN-M0-CH1 is a synchronous motor from the MSM IndraDyn S Synchronous Motors series. It features a multiturn absolute encoder, natural convection cooling, and an electrical release holding brake with a torque of 1.27 Nm. The motor provides a continuous torque at standstill of 0.64 Nm and uses a cable tail for electrical connection.
Internal Product Review
The MSM031B-R300-NN-M0-CH1 is a Bosch Rexroth Indramat synchronous motor with natural convection cooling and a plain shaft. A multiturn absolute encoder supports accurate position feedback, while the cable tail connection simplifies integration in compact motion assemblies. A 1.27 Nm holding brake with electrical release adds dependable static load retention for precise servo applications.
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Product Description:
The MSM031B-R300-NN-M0-CH1 is a synchronous motor manufactured by Bosch Rexroth Indramat as part of the MSM IndraDyn S Synchronous Motors series. The motor converts electrical energy from an IndraDrive amplifier into torque and speed for positioning small tooling or conveyor stations in automated cells. Its integrated feedback, compact housing, and low inertia make it suitable for precision tasks that require fast indexing and limited installation depth in packaging machines, electronic assembly lines, and laboratory equipment.
Its continuous stall capability of 0.64 Nm is the maximum torque the motor can deliver continuously without overheating, so average load must remain below that value. Heat is removed by natural convection, which allows operation without external fans but requires airflow around the housing to remain unobstructed. A built-in multiturn absolute encoder sends position data to the controller across several mechanical revolutions, eliminating the need for homing after power cycles. When power is removed, the holding brake supplies 1.27 Nm of static torque to keep the shaft locked on vertical or load-bearing axes, and winding code R300 identifies the electrical characteristics matched to IndraDrive low-voltage inverters.
The brake uses an electrically released mechanism, so spring force holds the rotor until a 24 V supply disengages it during motion commands. Power and feedback leave the housing through a preassembled cable tail, which reduces connector count and simplifies routing in tight machine spaces. Frame code 031 indicates the external flange pattern, while length designation B sets the overall body depth. A plain shaft without a shaft seal reduces friction and suits couplings that already provide sealing, so external sealing is needed if splash ingress is expected.