SE-B4.090.050-14.000 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SE-B4.090.050-14.000 is a synchronous servo motor from the SE Synchronous Servo Motors series. It has a nominal speed of 5000 rpm, a maximum torque of 23.0 Nm, and a mass of 15 kg with brake. The motor features a brake supply voltage of 24 V and a shaft size of 24 by 50 mm.
Internal Product Review
The SE-B4.090.050-14.000 is a Bosch Rexroth Indramat synchronous servo motor that delivers impressive motion performance with 5000 rpm nominal speed and 8.0 Nm static torque. A 0.57 Nm/A torque constant paired with 23.0 Nm maximum torque gives the motor strong acceleration and confident load handling. The 24 V brake supply supports straightforward integration, making the motor an excellent choice for demanding servo axes.
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Product Description:
The SE-B4.090.050-14.000 is a synchronous servo motor manufactured by Bosch Rexroth Indramat within the SE Synchronous Servo Motors series. Designed for industrial automation, this motor converts drive current into precise rotary motion, allowing machine tools, handling modules, and packaging axes to follow commanded positions and velocities under closed-loop control. Its synchronous design supports repeatable motion in applications that require accurate speed changes and stable positioning. The motor is suited for servo systems that run frequent start-stop cycles and need consistent response during indexing, feed control, or transfer movement.
The motor reaches a nominal speed of 5000 rpm, enabling fast cycle times in high-throughput equipment. A maximum torque of 23.0 Nm is available for short acceleration bursts, while 8.0 Nm of static torque holds loads at standstill. During continuous stall, the windings draw a standstill current of 14 A, and their copper paths present a winding resistance of 0.94 ohm. Combined with a 9.0 mH inductance, these values shape the electrical response that the drive must regulate. The back-electromotive force rises at 68 V per 1000 rpm, and current remains proportional to shaft torque across the operating range. The shaft measures 24 × 50 mm and is machined without a keyway, so torque is transferred through clamp or shrink couplings.
Mechanical integration is simplified by a centering diameter of 130 mm, and the housing length including the integrated brake is 299 mm. With the brake fitted, the assembly weighs 15 kg, which helps limit moving mass on reversing axes. The holding brake operates from a 24 V supply and helps prevent drift during power loss. Continuous motion demands are met by a peak current capability of 85 A, giving ample headroom above the continuous stall rating. A torque constant of 0.57 Nm/A links electrical input to mechanical output so the controller can estimate shaft torque from commanded current. The compact brake-equipped package also suits axis layouts where installation space and controlled stopping are both important.
