SD-A3.031.030-01.000 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SD-A3.031.030-01.000 is a brushless servo motor from the SD Magnet Motors series with a ferrite magnet type and an IP54 protection standard. It has a nominal speed of 3000 rpm, delivers a torque at standstill of 3.1 Nm, and features a peak current of 13.0 A. The motor operates with a noise rating of 64 dB and has a rotor inertia of 1.55e-3 kgm2.
Internal Product Review
SD-A3.031.030-01.000 is a Bosch Rexroth Indramat brushless servo motor. A 3000 rpm nominal speed and 3.1 Nm torque at standstill give the design very capable motion performance for precise servo applications. Ferrite magnet construction and IP54 protection make this motor a strong choice for dependable industrial service.
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Product Description:
The SD-A3.031.030-01.000 is a brushless servo motor built by Bosch Rexroth Indramat for the SD Magnet Motors series. As a permanent-magnet device that uses ferrite excitation, it supplies closed-loop torque and velocity control for indexing tables, packaging axes, and similar automation tasks. Its IP54 housing guards internal components against dust and splashing liquids, while a noise rating of 64 dB(A) keeps acoustic emissions within typical factory limits. The motor’s use in industrial motion systems relies on electronic commutation, which eliminates brush wear and supports continuous duty.
The motor reaches a nominal speed of 3000 rpm and can sustain a standstill torque of 3.1 Nm to hold loads without shaft movement. A torque constant of 0.96 Nm/A links commanded current to developed torque. During accelerative bursts, the windings may draw a peak of 13.0 A, while the electrical time constant of 6.0 ms indicates how rapidly phase current builds when the inverter issues a step change. The winding inductance of 40.0 mH and resistance of 6.7 Ω describe the electrical behavior expected by the drive electronics. The voltage constant of 130 V/1000 rpm establishes the back-EMF profile so the selected power stage can overcome generated voltage at top speed.
Dynamic behavior is influenced by a mechanical time constant of 12.1 ms and a rotor inertia of 1.55 × 10⁻³ kg·m². These values support a theoretical acceleration limit of 17 700 rad/s² for quick indexing. Thermal behavior includes a constant of 70 min, so stator temperature rises gradually and suits applications with intermittent overloads. At zero speed, the motor needs only 3.25 A of standstill current to generate full holding torque, which helps limit heat during holding. Ferrite magnets are used to support stable operation under elevated temperatures.
