SE-B4.210.050-14.010 Bosch Rexroth Indramat
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The SE-B4.210.050-14.010 is a synchronous servo motor manufactured by Bosch Rexroth Indramat for the SE Synchronous Servo Motors series. It features a maximum torque of 52 Nm, a nominal speed of 5000 rpm, and a holding torque of 28 Nm. The servo motor has a peak current of 174 A, a mass of 24 kg with brake, and operates with a brake supply voltage of 24 V DC.
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Product Description:
The SE-B4.210.050-14.010 is manufactured by Bosch Rexroth Indramat as part of the SE Synchronous Servo Motors series. It is used in industrial automation to convert drive commands into precise shaft rotation, enabling coordinated motion in packaging lines, pick-and-place modules, and similar machinery. An integrated electromagnetic brake secures the shaft when power is removed, supporting safe positioning on vertical axes.
During continuous operation, the motor reaches a nominal speed of 5000 rpm, allowing fast cycle times within its operating speed range. Its electromagnetic design can develop a maximum torque of 52.0 Nm for short acceleration periods, while the motor provides 18 Nm of static torque at standstill. Transient bursts draw a peak phase current of 174 A, whereas steady holding conditions require 28 A. The torque constant of 0.64 Nm/A links commanded current to delivered torque, allowing the drive regulator to estimate the motor’s torque response accurately. A compact three-phase winding with an inductance of 3.3 mH limits the rate of current change, smooths the current waveform, and reduces current ripple. The winding resistance is 0.27 Ω, which affects copper losses and winding temperature during prolonged operation.
The holding brake produces 28 Nm of torque, allowing it to hold the shaft against the rated static load. It releases in 50 ms and engages in 55 ms, minimizing delays between stopping and starting commands. The brake coils operate from a 24 V DC supply that can be switched by the drive control circuitry. The back electromotive force generated during motion follows a voltage constant of 68 V/1000 rpm, providing a predictable electrical response as motor speed changes. With the brake installed, the assembly weighs 24 kg and measures 394 mm from the flange to the rear cover, allowing installation in medium-frame machinery. The mounting interface uses flange accuracy class R, which maintains concentric alignment between the motor pilot and shaft when the motor is connected to a gearbox or direct-drive load.
