SE-B5.440.020-04.000 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SE-B5.440.020-04.000 is part of the SE Synchronous Servo Motors series and features a nominal speed of 2000 rpm with a static torque of 52 Nm. This servo motor offers a holding brake torque of 56 Nm, a shaft with keyway and feather key configuration, and a shaft size of 32 by 58 mm. The standstill current is 35 Amps and the peak current at 20°C is 207 Amps.
Internal Product Review
The SE-B5.440.020-04.000 is a Bosch Rexroth Indramat synchronous servo motor with 52 Nm static torque and 2000 rpm nominal speed. A 56 Nm holding brake with 24 VDC actuation adds dependable load retention for servo axes that require secure positioning. The 1.51 Nm/A torque constant makes this motor an excellent fit for demanding motion applications.
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Product Description:
The SE-B5.440.020-04.000 is a synchronous servo motor manufactured by Bosch Rexroth Indramat for the SE Synchronous Servo Motors series. It serves as a rotary actuator in closed-loop drive systems. The motor provides accurate position and speed control for tooling stations, conveyor zones, and handling axes across industrial automation lines.
The motor has a nominal speed of 2000 rpm and a continuous standstill torque of 52 Nm, supporting applications that combine moderate speed with load holding. A torque constant of 1.51 Nm/A links commanded current to generated torque, while a rotor inertia of 18.6 × 10-3 kg·m² balances quick acceleration with smooth operation. The electromagnetic circuit has a winding inductance of 5.0 mH and a phase resistance of 0.26 ohm, which influence current ripple and controller tuning. A standstill current of 35 A can be supplied without exceeding thermal limits, and the 18.6 ms electrical time constant governs the current rise after a step command. The voltage constant is 167 V/1000 rpm, which indicates the back electromotive force generated in relation to rotational speed. The Ø32 × 58 mm shaft transmits torque through a keyway and feather key, providing positive engagement with the connected coupling or driven component.
The integrated holding brake clamps the shaft with 56 Nm of torque when power is removed. It is energized by 24 VDC and has a coil current draw of 1.5 A. During dynamic peaks, the windings tolerate 207 A, allowing brief acceleration bursts before the current returns to continuous operating levels. A 52-minute thermal time constant characterizes the housing’s heat dissipation rate, allowing intermittent overloads without a rapid temperature rise. The brake circuit can be switched directly by standard 24 V safety relays to support common machine safety channel requirements. This arrangement allows the brake to engage during a power interruption while the motor remains available for controlled release during normal operation.
