SE-LB3.055.060-14.000 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SE-LB3.055.060-14.000 is part of the SE Synchronous Servo Motors series. This servo motor has a nominal speed of 6000 rpm and delivers a maximum torque of 16.2 Nm. It features a holding brake torque of 8.0 Nm and a peak current of 76 Amps, with a mass of 11.3 kilograms when the brake is included.
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Product Description:
The SE-LB3.055.060-14.000 is a synchronous servo motor manufactured by Bosch Rexroth Indramat for the SE Synchronous Servo Motors series. In industrial automation, this motor couples to gearboxes or direct-drive shafts to deliver precisely regulated rotary motion, allowing machine controllers to synchronize tooling, conveyors, and indexing tables with millisecond accuracy. It operates with closed-loop feedback from a compatible drive so that torque and speed follow the programmed trajectory without manual adjustment.
Under rated operation, the rotor turns at 6000 rpm, a speed suited to fast pick-and-place or spindle duties. Momentary loading can reach 16.2 Nm, while the static torque at standstill is 6.5 Nm, providing short-term overload capacity for acceleration. Current response is governed by an electrical time constant of 10.2 ms, so phase current rises quickly to correct position errors. The drive may deliver 76 A during acceleration, while continuous holding requires 12.6 A. A spring-applied brake releases when its coil receives 24 VDC ±10%, allowing the brake to lock the shaft whenever power is removed. The motor has a voltage constant of 61 V/1000 rpm, a winding resistance of 1.03 Ω, and an inductance of 11 mH. These electrical values assist with compatible drive selection and current-loop configuration.
With its brake installed, the unit weighs 11.3 kg and measures only 295 mm in length, supporting compact machine layouts. A rotor inertia of 1.21 × 10⁻³ kg·m² supports quick acceleration and settling while limiting the motor’s contribution to the total axis inertia. The torque constant of 0.52 Nm/A provides the controller with a linear relationship between phase current and developed torque. The output shaft has a diameter of 19 mm and a length of 40 mm, allowing it to accept standard keyed couplings. The brake provides 8.0 Nm of holding torque, which can restrain a stationary vertical load when motor power is unavailable. Proper coupling alignment helps prevent unnecessary radial loading on the shaft and bearings during high-speed operation.
