MMD042A-030-EG1-KN Bosch Rexroth Indramat
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MPN: R911281524
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The Bosch Rexroth Indramat MMD042A-030-EG1-KN is a synchronous motor from the MMD Synchronous Motors series, with a rated output of 400 watts and a nominal speed of 3000 min-1. It features a holding brake with 1.3 Nm torque, an incremental encoder with 2,500 increments, and an IP65 protection category. The motor weighs 2.0 kg and has a flange size of 70 mm with a plain shaft design.
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Product Description:
The MMD042A-030-EG1-KN is a synchronous servo motor produced by Bosch Rexroth Indramat within the MMD Synchronous Motors series. It is intended for position and velocity control in compact industrial axes where low mass and a small frame help keep moving assemblies responsive. Integrated feedback from an incremental encoder allows the connected drive to close the speed loop directly at the motor shaft, and the built-in holding brake secures stationary loads when power is removed. Because the encoder is integrated into the motor, no separate feedback device is required for basic closed-loop operation. This arrangement suits compact packaging units, indexing devices, and other machine axes that need repeatable rotary motion in a limited installation space.
The motor delivers a rated mechanical output of 400 W and provides 1.3 Nm of continuous standstill torque for static loads. Its nominal operating point is 3000 rpm, while winding type 030 allows acceleration up to 5000 rpm during short motion profiles that require a higher top speed. An IP65 enclosure helps protect internal components from dust and water jets, which supports installation directly on machine frames in ambient conditions up to 40 °C and 85% relative humidity. The plug-style power and encoder leads exit on the A-side through a 25 cm pigtail, which reduces strain at the housing and makes cable routing easier in tight spaces.
The mechanical interface uses a 50 mm centering pilot and a 70 mm square flange, so the motor can align with lightweight gearheads or direct belt-pulley drives. A plain steel shaft with a 14 mm journal uses a nitrile sealing ring to help keep lubricant in place and limit contaminant entry around the shaft opening. The rotor has a moment of inertia of 0.4 × 10⁻⁴ kg·m², which supports fast acceleration without demanding excessive current from the drive during frequent start-stop motion. The electrically released brake operates on 24 V DC at 0.4 A, and storage is permitted from -20 °C to 80 °C when the motor is not in use.
Frequently Asked Questions about MMD042A-030-EG1-KN:
Q: What type of encoder and resolution does the MMD042A-030-EG1-KN use?
A: The MMD042A-030-EG1-KN motor features an incremental encoder with a resolution of 2,500 increments.
Q: Does the MMD042A-030-EG1-KN have a holding brake and how is it released?
A: This motor is equipped with a holding brake that provides a torque of 1.3 Nm and is electrically released with a 24V / 0.4A power supply.
Q: What is the protection rating of the MMD042A-030-EG1-KN motor?
A: The protection category for this model is IP65, providing dust-tight and water-jet protection.
Q: What is the maximum and nominal speed of the MMD042A-030-EG1-KN?
A: This motor supports a maximum theoretical speed of 5000 min-1 and offers a nominal speed of 3000 min-1.
Q: What is the shaft configuration of the MMD042A-030-EG1-KN motor?
A: The shaft on this motor has a plain design with a diameter of 14 mm and features a sealing ring for protection.
