SF-A4.0125.030-14.824 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SF-A4.0125.030-14.824 is part of the SF Servo Motors series and features a 142 mm flange size with a centering diameter of 130 mm. This servo motor offers an encoder resolution of 8,000,000 increments per revolution and encoder precision of ±20 angular seconds. It has a rated speed of 3000 rpm, locked-rotor torque of 14.5 Nm, and an IP67 protection rating.
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Product Description:
The SF-A4.0125.030-14.824 is a servo motor manufactured by Bosch Rexroth Indramat and part of the SF Servo Motors series. Designed for closed-loop axis control in industrial automation, it converts electrical power from a matched drive into regulated rotary motion for packaging, material handling, and assembly equipment. The motor is intended for systems that require coordinated speed and position control during repeated production cycles. Its mechanical interface follows standardized dimensions so it can fit established machine layouts without changes to the frame plates.
During continuous operation, the unit reaches a rated speed of 3000 rpm, allowing moderate-speed positioning without gear reduction. With a torque constant of 1.37 Nm/A, the drive can calculate current commands accurately to meet the demanded torque. When the shaft is blocked, the motor delivers 14.5 Nm while drawing a locked-rotor current of 10.6 Arms; these values describe the motor's stall condition. Position feedback is handled by an optical encoder that generates 8000000 incr./rev. and holds a precision of ±20 angular seconds, which supports very fine position measurement. The encoder signal gives the controller a detailed position reference during acceleration and low-speed motion. Power conductors are routed through a 4 × 1.5 mm² cable, which keeps the connection compact at the drive terminal block.
The motor has an enclosure rating of IP67, which seals the stator against coolant splash and airborne particles. Its plug braking network of 785 Ws is matched to a resistor of 1.0 Ω for rapid deceleration without thermal overload. The square flange measures 142 mm and centers on a 130 mm pilot bore to DIN tolerances, while the face includes a DIN 332-DS M8 center hole for drawbar tools. Shaft coupling uses a Ø24 × 50 mm journal with an A8 × 7 × 40 mm parallel key so torque is transmitted without slip. Rotor inertia is 30 × 10⁻⁴ kg·m², balancing dynamic response with load stability and supporting predictable acceleration across the machine cycle.
