SF-A4.0230.030-00.030 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SF-A4.0230.030-00.030 is a servo motor from the SF Servo Motors series with a flange size of 142 mm and a total mass of 25 kg. It features a rated speed of 3000 rpm and delivers a locked-rotor torque of 22 Nm at a current of 14 A. The motor includes a single-turn absolute encoder with an accuracy of ±20 angular seconds and a resolution of 8 million increments per revolution.
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Product Description:
The SF-A4.0230.030-00.030 is a servo motor produced by Bosch Rexroth Indramat and supplied within the SF Servo Motors series. The unit converts regulated drive current into rotary motion for positioning or velocity control tasks in automated machinery, allowing precise shaft movement under closed-loop feedback. It fits applications where compact frame dimensions and integrated absolute feedback support straightforward installation and immediate position tracking after startup.
The motor mounts to gearboxes or structural plates through a 142 mm square flange, and its shaft can spin at a rated speed of 3000 rpm without derating. A torque constant of 1.57 Nm/A links the commanded phase current to the torque produced by the motor, simplifying drive tuning. Dynamic characteristics are influenced by a rotor inertia of 54 × 10-4 kg·m², which balances quick acceleration with stable load control. During startup or indexing against high static loads, the motor can deliver a locked-rotor torque of 22 Nm while drawing 14 A under that stall condition. These electromechanical values govern drive sizing, acceleration ramps, and thermal modeling in continuous-duty cycles. The available torque also supports controlled motion when the connected mechanism presents substantial resistance at low speed.
A single-turn absolute encoder provides a resolution of 8 million increments per revolution and maintains position accuracy to ±20 arcseconds, supporting precise multi-axis interpolation without homing routines. Connection to the drive is made through a motor cable that accepts conductors with a cross-sectional configuration of 4 × 2.5 mm², keeping voltage drop low over typical cabinet runs. The assembly has a mass of 25 kg, and its 24 mm diameter shaft extends 50 mm and includes a keyway for an A8 × 7 × 40 feather key to secure couplings. A housing length of 341 mm keeps the overall envelope moderate, allowing the motor to fit into compact machine frames while providing the required continuous torque density.
