SE-KB4.065.030-14.000 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SE-KB4.065.030-14.000 is part of the SE Synchronous Servo Motors series and features a static torque of 7.6 Nm with a nominal speed of 3000 rpm. This motor has a flange diameter of 185 mm, a shaft size of 19 by 28 mm, and weighs 13 kg. It supports a brake voltage of 24 V DC at 1.0 A and a brake holding torque of 18 Nm at 120°C.
Internal Product Review
The SE-KB4.065.030-14.000 is a synchronous servo motor with a 3000 rpm nominal speed and 7.6 Nm static torque, giving motion systems a capable performance range. A 24 V DC brake paired with 18 Nm holding torque supports dependable stopping and secure axis holding. The 1.01 Nm/A torque constant stands out as a strong indicator of responsive servo behavior.
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Product Description:
The SE-KB4.065.030-14.000 is a synchronous servo motor developed by Bosch Rexroth Indramat for the SE Synchronous Servo Motors series. It serves as the electromechanical actuator in CNC tables, pick-and-place stations, and comparable automation systems where precise torque and speed regulation are required to translate controller commands into accurate shaft rotation. By combining a permanent-magnet rotor with integrated tachometer feedback, the motor supports closed-loop motion control in industrial drive systems. The feedback signal allows the connected drive to monitor rotor speed and correct deviations caused by changing mechanical loads.
Under continuous excitation, the rotor reaches a nominal speed of 3000 rpm, allowing the drive to support fast indexing cycles. A standstill torque of 7.6 Nm is available, and the torque constant of 1.01 Nm/A establishes the corresponding current demand for position holding. At standstill, the windings can draw a current of 7.5 A, while a resistance of 3.39 Ω limits copper losses. The back EMF generated as speed increases follows a voltage constant of 113 V/1000 rpm, so the inverter must provide a proportionate DC-link voltage. Current rise is governed by an electrical time constant of 8.5 ms, enabling rapid torque transients. The rotor and tachometer have a combined inertia of 1.71 × 10⁻³ kg·m², which affects acceleration response and servo stiffness during changes in speed or position.
An integrated brake secures the load with a holding torque of 18 Nm. It releases when a supply of 24 V DC ±10% is applied and draws 1.0 A during operation. Thermal behavior is characterized by a time constant of 26 min, while the motor’s 13 kg mass helps absorb heat generated during operation. The flange has a diameter of 185 mm, providing a broad mounting surface for secure alignment with the machine frame. The overall motor length does not exceed 283 mm, allowing its placement within compact axis assemblies. Its ground steel shaft measures Ø19 × 28 mm and accommodates keyed or clamped couplings for transmitting torque to the connected mechanism.
