SF-A4.0125.030-14.155
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The SF-A4.0125.030-14.155 is a high-performance servo motor with a locked-rotor torque of 14.5 Nm. Manufactured by Bosch Rexroth Indramat as part of the SF Servo Motors series, it boasts IP67 ingress protection and a flange size of 142 mm. The motor features a single-turn encoder with 8 million increments per revolution.
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Product Description:
Bosch Rexroth Indramat manufactures the SF-A4.0125.030-14.155 brushless servomotor. The motor uses sinusoidal electromotive force and includes an integrated absolute encoder. The motor contains a holding brake but does not have a mating connector.
The SF-A4.0125.030-14.155 brushless servomotor has a locked-rotor current rated at 10.6 A, with a torque constant of 1.37 Nm/A. The mounting interface has a flange width and height of 142 mm × 177 mm, and a mounting hole pitch of Ø165 ± 0.1 mm. A moment of inertia value at 40 × 10⁻⁴ kgm² enables controlled acceleration of the motor system. This motor includes a 142 mm flange alongside its Ø24 × 50 mm shaft diameter. The motor reaches 324 mm in length while the holding brake is included and the total weight amounts to 17.7 kg. The available SF encoder supports single-turn operation along with multi-turn functionality (MTG). The encoder contains an angular second measurement accuracy of ±20 seconds and provides up to 8 million revolutions. The space between the shaft end and flange face meets specifications of 50 ± 0.5 mm for suitable dimensional alignment. According to DIN 332-DS this M8 thread on the center hole enables reliable mechanical attachment. The motor has a locked-rotor torque of 14.5 Nm and can support a rated speed of 3000 revolutions per minute.
The holding brake of the motor has a holding torque of 18 Nm at 120°C and uses a supply voltage of 24 V ±10% with a residual ripple of ≤ 5%. The rated current of the brake is 0.7 A, which ensures its operating stability. A brake with a moment of inertia value 3.1 × 10⁻⁴ kg•m² increases the system weight by 1.04 kg. Industrial automation applications require precise requirements that the encoder-based location feedback methodology enables within the motor system.
Frequently Asked Questions about SF-A4.0125.030-14.155:
Q: Why is SF-A4.0125.030-14.155 rated 3000 rpm?
A: The 3000 rpm rating supports consistent speed in servo operations. It suits typical drive systems requiring moderate dynamic response.
Q: Does SF-A4.0125.030-14.155 include encoder precision support?
A: Yes, the encoder delivers ±20 angular seconds precision. This helps ensure accurate position control and reliable feedback performance.
Q: Do SF-A4.0125.030-14.155 brake specs affect inertia?
A: Yes, the brake adds 3.1 × 10⁻⁴ kg·m² to inertia. It impacts dynamic response and should be considered in system design.
Q: Why is the SF-A4.0125.030-14.155 shaft key specified?
A: The A8 × 7 × 40 key prevents slippage. It ensures torque transfer between the motor shaft and mechanical coupling.
Q: How does SF-A4.0125.030-14.155 aid mounting?
A: The flange and center hole follow DIN standards. This allows secure and standardized motor installation in machine assemblies.
