SE-B3.075.030-14.015 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SE-B3.075.030-14.015 is part of the SE Synchronous Servo Motors series and offers a maximum torque of 18.6 Nm along with a nominal speed of 3000 rpm. It has an IP67 rating at the A-flange, a holding brake torque of 8.0 Nm, and operates with a standstill current of 9.5 Amps. The servo motor features a brake supply voltage of 24 Volts and a shaft style without keyway or feather key.
Internal Product Review
The SE-B3.075.030-14.015 is a Bosch Rexroth Indramat synchronous servo motor tuned for responsive motion control at 3000 rpm with 9.3 Nm static torque. An 18.6 Nm maximum torque rating and 57 A peak current support strong acceleration and stable performance under dynamic load. A 24 V ±10% holding brake supply paired with 8.0 Nm brake torque makes the unit a well-balanced choice for precise axis applications.
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Product Description:
The SE-B3.075.030-14.015 servo motor is produced by Bosch Rexroth Indramat as part of the SE Synchronous Servo Motors series. This three-phase permanent-magnet unit is intended for position and velocity loops in automated tooling, packaging, and handling axes. It integrates an electromagnetic holding brake and a sealed A-flange so the motor can be mounted directly in line with gear stages or belt drives while maintaining the ingress protection needed on plant floors. The combination supports compact axis layouts where braking and mounting features need to be built into the motor body.
Its continuous operating point is established at a nominal shaft speed of 3000 rpm, where the motor can deliver 9.3 Nm of static torque while drawing a standstill current of 9.5 A. For transient load spikes, the electromagnetic design supports up to 18.6 Nm, and the drive must be able to source a peak phase current of 57 A. With a torque constant of 0.98 Nm/A, the controller can estimate output torque directly from current feedback, and the 21 mH winding inductance works with the 10.2 ms electrical time constant to limit ripple during high-frequency PWM operation. The integrated brake requires a 24 V ±10% supply and 0.8 A to generate 8.0 Nm of holding torque when power is removed.
Mechanical response is influenced by a rotor inertia of 1.66 × 10-3 kg·m², allowing rapid acceleration without excessive drive power. The back-EMF gradient is 113 V/1000 rpm, so regeneration voltage rises quickly as speed increases and must be accommodated by the inverter DC bus. Phase resistance is 2.1 Ω, which affects I²R heating and low-speed efficiency. The A-flange sealing achieves IP67, enabling wash-down installation when paired with the shaft, which is supplied without a keyway or feather key to suit clamp-style couplings. This shaft style supports rigid friction-fit couplings that can maintain accurate alignment in indexing and transfer axes.
