Product Description:

The SE-C4.210.030-04.000 is a permanent-magnet synchronous servo motor manufactured by Bosch Rexroth Indramat within the SE Synchronous Servo Motors series. Intended for closed-loop automation axes, the unit couples directly to gearboxes, ball screws, or belt drives and provides the rapid acceleration and positional accuracy required by packaging, handling, and machining equipment. When paired with a Rexroth drive controller, the motor translates digitally issued current commands into mechanical rotation while delivering feedback signals that allow the drive to regulate motion precisely.

Its continuous operating point has a nominal speed of 3000 rpm; at this velocity, the magnetic field remains synchronized with the stator excitation to minimize ripple. A static torque capacity of 21 Nm allows the shaft to hold loads at standstill without external locking devices. The motor has a torque constant of 0.92 Nm/A, meaning each ampere supplied by the inverter produces just under one newton-meter of torque. Dynamic events are supported by a peak current ceiling of 158 A, producing up to 57.4 Nm during short acceleration bursts, while the thermal standstill current limit is 23 A. Current buildup is characterized by an electrical time constant of 11.9 ms. The motor also has a voltage constant of 102 V per 1000 rpm, which helps establish the drive’s control bandwidth. The windings have an inductance of 6.2 mH and a resistance of 0.51 Ω.

Mechanical integration is aided by a square flange that measures 142 mm, and the shaft stub is 24 mm in diameter and 50 mm long to accommodate standard keyway couplings. The laminated rotor and tachometer generator have an inertia of 4.98 × 10⁻³ kg·m², providing a balance between quick acceleration and the damping of load disturbances. For vertical or safety-critical axes, the integrated holding brake supplies 18 Nm of torque while drawing 1.0 A when engaged. Without the brake, the motor weighs 22.0 kg, keeping the frame mass moderate for gantry or robot installations.