Product Description:

The SF-A5.0700.030-14.050 is a permanent-magnet servo motor manufactured by Bosch Rexroth Indramat and included in the SF Servo Motors series. In automated machinery, it converts drive current into controlled rotary motion while an internal holding brake secures vertical or suspended loads when power is removed. A high-resolution feedback interface lets the associated drive controller close the position loop directly, making the unit suitable for pick-and-place heads, feed rollers, and forming axes where compact size and repeatable positioning are required without separate mechanical locks.

The electromagnetic brake develops 56 Nm of static torque and is energized by only 1.33 A from a 24 V DC control supply, which helps limit thermal rise. A polar moment of 30 × 10⁻⁴ kg·m² for the brake keeps added inertia low, so deceleration profiles remain predictable. The motor windings connect to a common intermediate circuit that operates at up to 670 V, enabling rapid power exchange on multi-axis lines. Shaft feedback comes from an optical encoder whose absolute accuracy is ±20 arcseconds, supporting tight velocity regulation at very low speeds.

The digital encoder delivers 8 million increments per revolution, dividing each revolution into fine increments for smooth interpolation. During a blocked start, the stator can generate 69 Nm while the power stage may momentarily supply 45 A, creating the force needed to overcome static load friction. Under rated conditions, the shaft reaches 3000 rpm, and a rotor inertia of 257 × 10⁻⁴ kg·m² balances quick speed changes with mechanical stability. A torque constant of 1.53 Nm/A links commanded current to output torque, aiding current-loop tuning and predictable force delivery across the working range.