SE-LB3.055.030-04.000

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The SE-LB3.055.030-04.000 servo motor by Bosch Rexroth offers 16.2 Nm maximum torque and a 3000 rpm nominal speed. Its fast acceleration (27 ms) and low resistance improve operational efficiency.

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Product Description:

Designed for industrial automation the SE-LB3.055.030-04.000 servo motor is a product of Bosch Rexroth. It is applied to provide controlled and accurate movement and function for industrial automation. The motor is designed to govern highly accelerated speed, and this is accompanied by more severe power control. The motor is developed to regulate rapidly increased speed with energy-intense control. It combines high torque delivery with compact dimensions, making it a versatile choice for demanding automation tasks.

The SE-LB3.055.030-04.000 servo motor comes equipped with a stall torque of 6.8Nm; the maximum torque varies at 16.2Nm and the no load speed is 3000 rpm. Owing to its torque constant of 1.02Nm/A, this motor is capable of a direct translation of electrical to mechanical power while being genuinely application-specific. At 113 V/1000 rpm, their voltage constant makes the output of the SE-LB3.055.030-04.000 servo motor minimize fluctuations for more reliability to the motor. The time to accelerate to the nominal speed is as small as 27ms so the motor is set to perform and it covers the speed very fast. Electrical parameters include a winding resistance of 3.53 ohms at 20°C, and a winding inductance of 30 mH to reduce energy loss to enhance operating efficiency.

The SE-LB3.055.030-04.000 servo motor continues to feature the current capabilities: the stall current of 6.7 A and the surge current of 40 A, making maximum torque regardless of the load possible. It also has a mechanical time constant of 3.8 ms so that the mechanical movement of the servo motor during its work is as fast as possible. Moreover, the electrical time constant of 8.4ms enables Quick electrical inputs response and minimizing sporadic performance. It has a mass of between 10.2–10.6 kg (excluding the holding brake).

Current at standstill
6.7 A
Maximum torque
16.2 Nm (SM=10/20)
Nominal speed
3000 rpm
Peak current at θambient = 20°C
40 A
Ramp-up time (upto nominal speed)
27 ms
Static torque
6.8 Nm
Torque constant (θambient = 40°C; Δθw = 105K)
1.02 Nm/A
Voltage constant (θambient = 40°C; Δθw = 105K)
113 V/1000 rpm
Winding inductance
30 mH
Winding resistance θw= 20°C
3.53 Ohm

Frequently Asked Questions about SE-LB3.055.030-04.000:

Q: How does the SE-LB3.055.030-04.000 reduce power loss?

A: The motor features a winding resistance of 3.53 Ohms, improving energy efficiency and minimizing power losses. The SE-LB3.055.030-04.000 runs efficiently during long periods of use.

Q: Why does the SE-LB3.055.030-04.000 have a thermal time constant of 29 minutes?

A: The 29-minute thermal time constant allows the motor to dissipate heat over extended use, preventing overheating. The SE-LB3.055.030-04.000 operates reliably for long durations.

Q: Why is a 113 V/1000 rpm voltage constant necessary in SE-LB3.055.030-04.000 ?

A: The 113 V/1000 rpm voltage constant stabilizes the motor's performance, reducing fluctuations during speed transitions. Thus the motor delivers consistent speed control.

Q: Why does the SE-LB3.055.030-04.000 have 16.2 Nm maximum torque?

A: The 16.2 Nm maximum torque ensures high performance under varying load conditions, offering flexibility in demanding tasks. It is capable to deliver powerful motion control.

Q: How does the holding brake affect operation?

A: The holding brake, adding 0.7 kg, maintains motor position during idle periods, enhancing stability in precise applications. The SE-LB3.055.030-04.000 offers improved position control.


Internal Product Review

  • ‘‘The SE-LB3.055.030-04.000 servo motor from Bosch Rexroth is a reliable choice for automation, offering 16.2 Nm maximum torque and 3000 rpm nominal speed. It has a fast ramp-up time of 27 ms, low winding resistance and 40 A peak current. These features ensures its consistent performance under load.’’

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