SE-LB3.055.030-04.100 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SE-LB3.055.030-04.100 is part of the SE Synchronous Servo Motors series and has a mass of 11.3 kg with an overall length of 295 mm. It provides a nominal speed of 3000 rpm, a static torque of 6.8 Nm, and uses a brake supply voltage of 24 V DC. The motor features a shaft diameter of 19 mm and includes an oil-tight end plate.
Internal Product Review
The SE-LB3.055.030-04.100 is a Bosch Rexroth Indramat synchronous servo motor with a nominal speed of 3000 rpm and static torque of 6.8 Nm. Brake performance is well suited for controlled stopping, with a 24 V DC brake supply and a fast 40 ms brake-on time. An oil-tight end plate supports dependable machine integration, and the 1.02 Nm/A torque constant highlights efficient servo response.
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Product Description:
The SE-LB3.055.030-04.100 is a synchronous servo motor built by Bosch Rexroth Indramat within the SE Synchronous Servo Motors series. This motor is intended for industrial automation axes that demand accurate velocity and position control, and it converts command currents from a drive into mechanical rotation for tooling, pick-and-place gantries, or indexing tables. Its synchronous design supports stable closed-loop motion in systems that require repeatable starts, stops, and position changes during continuous production.
The motor can rotate the shaft at a maximum nominal speed of 3000 rpm, a value that allows direct coupling to gearboxes or lead screws without overspeeding common feedback devices. A torque constant of 1.02 Nm/A links commanded stator current to developed torque, simplifying loop tuning in the servo controller. During standstill, the winding draws 6.7 A, and this current maintains holding force without overheating the copper. Magnetic energy storage is characterized by a winding inductance of 30 mH, while copper loss is governed by a winding resistance of 3.53 Ohm. These electrical values describe current response and heat generation during changing loads. Brake control uses a 24 V DC supply, energizing in 40 ms and releasing in 55 ms, so the axis can stop and restart with short delay. An oil-tight end plate helps prevent lubricant migration from adjoining gear stages into the stator cavity.
The motor provides a stall torque of 6.8 Nm, which is suitable for holding force at low speed or at rest when the brake is applied. It reacts to drive current changes within an electrical time constant of 8.4 ms, supporting quick speed correction during indexing moves and similar duty cycles. A mass of 11.3 kg helps the unit remain stable when mounted to lighter machine structures. The housing measures 295 mm long, centers on a 95 mm pilot, and uses a 19 mm diameter shaft with a 40 mm extension for direct fit into IEC-compatible couplings. This layout supports compact installation where motor length and shaft reach must match adjacent transmission components.
