Product Description:

The SF-A2.0020.030-14.050 is a permanent-magnet synchronous servo motor manufactured by Bosch Rexroth Indramat within the SF Servo Motors series. Designed as a compact drive element for precise positioning, it converts commanded current from a compatible Rexroth inverter into controlled rotary motion used in pick-and-place units, gantries, and other cyclic axes on automated lines. The motor couples directly to machine frames, eliminating intermediate belts and gears, and reports operating data through internal sensors so that the drive controller can close a high-resolution torque and speed loop.

The motor mounts to standard mechanical interfaces because its flange measures 100 mm. During continuous operation, the rotor reaches a rated shaft velocity of 3000 rpm, a range suited to medium-speed packaging and handling tasks. A torque constant of 1.5 Nm/A links drive current to usable shaft torque, helping the controller calculate acceleration limits. The power stage is supplied from a DC bus of 670 V, so cable insulation and connector spacing must match this potential. When the shaft is locked, the electromagnetic structure can withstand a stall load of 2.0 Nm and draws 1.3 A, indicating the startup load placed on the drive. Two integrated NTC temperature sensors report winding temperature, and a permissible 5% brake ripple limits residual torque pulsations.

With the holding brake assembled, the housing length is 217 mm and the total mass is 5.8 kg, so compact pick-and-place axes can still meet low moving-mass targets. The spring-applied brake clamps the shaft with a static torque of 3.2 Nm. Once power is restored, the coil releases when a supply of 24 VDC is applied and 0.56 A flows. The brake components add 0.35 kg to the rotor and introduce 0.4 × 10⁻⁴ kg·m² of additional inertia, figures the motion controller must include in jerk calculations.