Product Description:

The SF-A4.0091.030-10.000 is a servo motor produced by Bosch Rexroth Indramat as part of the SF Servo Motors series. This rotary unit converts drive current into controlled torque and speed so that axis modules in packaging lines, handling robots, or CNC stages can index to precise positions with repeatability. Its integrated feedback and thermal monitoring allow the connected drive controller to supervise temperature and position at the same time, helping the axis remain within the commanded motion window. That combination supports synchronized motion tasks that require stable response during frequent starts, stops, and short dwell periods.

At its rated operating point, the rotor can spin at 3000 rpm and delivers a standstill torque of 9.1 Nm for holding or low-speed tasks. The electromagnetic design achieves a torque constant of 1.42 Nm/A, so each ampere from the inverter produces a predictable amount of mechanical torque. During standstill, the windings draw 6.6 A, which is useful when selecting cable and fuse capacity. Dynamic response is influenced by a rotor inertia of 21 ×10^-4 kg·m², balancing quick acceleration with stable running behavior. Position feedback is supplied by an encoder with a resolution of 8,000,000 inc/rev, permitting fine interpolation for tight positional loops in high-precision machinery. This high feedback resolution also helps the drive apply small position corrections smoothly during low-speed motion.

Heat generated by these electrical loads is dissipated through radiation and natural convection, eliminating the need for external blowers and simplifying cabinet layouts. The motor has a total mass of 13 kg, and its 246 mm length keeps the frame compact for medium-power axis assemblies. A front-face mounting pattern of IM B5 mates with gearboxes or machine plates, while the Ø24 × 50 mm smooth shaft works with clamp or collet couplings. Integrated temperature sensors provide real-time thermal data to the controller so current can be reduced before critical temperature limits are reached.