SE-B5.570.020-14.000 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SE-B5.570.020-14.000 is part of the SE Synchronous Servo Motors series and delivers a nominal speed of 2000 rpm with a maximum torque of 135 Nm. This motor offers a holding brake torque of 56 Nm and a shaft size of 32 by 58 mm. It has a peak current of 240 A and a torque constant of 1.55 Nm per ampere.
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Product Description:
The SE-B5.570.020-14.000 is a synchronous servo motor manufactured by Bosch Rexroth Indramat for the SE Synchronous Servo Motors series. It serves as a drive element in automated machinery where closed-loop control of rotation is required for positioning tables, gantries, or packaging axes. By producing torque directly from stator windings and permanent-magnet excitation, the unit converts electrical commands from a drive into mechanical motion without intermediate gearing.
The motor reaches a rated shaft speed of 2000 rpm, and the drive electronics may supply up to 240 A during acceleration events. At standstill, the current drops to 40 A, keeping copper losses within thermal limits. Electromagnetic behavior is characterized by a torque constant of 1.55 Nm/A and a back-EMF constant of 170 V/1000 rpm; these values allow the controller to calculate voltage and current setpoints for precise speed regulation. The stator winding has an inductance of 4.9 mH and a resistance of 0.21 Ω, which affect current rise time and steady-state losses. A tachogenerator integrated on the shaft delivers 2.7 V per 1000 rpm with a tolerance of ±5% for analog speed feedback. Mechanical power is transmitted through a 32 × 58 mm plain shaft supplied without a keyway, permitting the use of shrink-fit or clamped couplings.
For short duty cycles, the rotor can deliver up to 135 Nm, while continuous operation at standstill is limited to 62 Nm. Position holding on vertical axes is supported by an electromagnetic brake rated at 56 Nm, which is energized from a 24 V supply with an allowable variation of ±10%. Dynamic response is influenced by a reflected inertia of 23.6 × 10⁻³ kg·m², balancing rapid acceleration with torsional stability. Heat absorbed in the windings dissipates gradually because the thermal time constant is 59 min, so prolonged overloads must be avoided. The analog speed signal, electromagnetic brake, and plain shaft support controlled motion and secure load retention in applications that require frequent acceleration, deceleration, and stationary holding.
