SE-LB3.075.030-10.037 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SE-LB3.075.030-10.037 is part of the SE Synchronous Servo Motors series and has a nominal speed of 3000 rpm with a static torque of 9.3 Nm. The servo motor's peak current at 20 degrees Celsius is 57 Amps, and it weighs 12.8 kilograms. It has a shaft size of 19 by 40 millimeters with a maximum length without brake of 319 millimeters.
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Product Description:
The SE-LB3.075.030-10.037 is a synchronous servo motor manufactured by Bosch Rexroth Indramat within the SE Synchronous Servo Motors series. It supplies precise rotary motion for industrial axes such as pick-and-place units, packaging spindles, and conveyor sections. The lack of an integrated brake makes it suitable where external mechanical locking is already provided.
The motor reaches a nominal operating velocity of 3000 rpm, enabling drive tasks that require consistent speed tracking under load. During transient demand, it can supply up to 18.6 Nm of torque, while the continuous static value is 9.3 Nm for holding or low-speed positioning. Standstill excitation draws 9.5 A, and the amplifier may deliver a momentary 57 A to use the full overload curve. With a back-EMF gradient of 113 V/1000 rpm, the connected drive must provide adequate DC-bus voltage to avoid field weakening at high speed. The three-phase stator has an inductance of 21 mH and a resistance of 2.1 Ω, and these values influence current loop bandwidth and thermal dissipation. A cylindrical shaft measuring Ø19 × 40 mm is supplied without a keyway, so torque transfer relies on friction or a custom hub. Overall length without a brake is limited to 319 mm, allowing the unit to fit shallow machine frames.
Dynamic behavior is set by the rotor inertia, which, including the tachogenerator, is 1.66 × 10⁻³ kg·m². This low value supports rapid acceleration, evidenced by a ramp-up from zero to rated speed in 30 ms. The electromagnetic design delivers a torque constant of 0.98 Nm/A, letting the control system predict mechanical output directly from phase current. At a mass of 12.8 kg, the motor can be mounted on lightweight gantries without overstressing support bearings, and its unkeyed shaft simplifies disassembly when frequent tool changes are required.
