Product Description:

The SF-L1.0012.060-00.058 is a synchronous servo motor produced by Bosch Rexroth Indramat within the SF Servo Motors series. Designed for positioning and velocity control in automated machinery, the unit converts electrical energy from a matched drive into regulated mechanical torque across its steel shaft. The motor integrates into servo axes where fast acceleration, repeatable speed regulation, and a compact form factor are critical, such as packaging equipment, pick-and-place units, and small transfer stations. Its mechanical interface uses a keyway and feather key layout, facilitating slip-free power transfer to couplings or pulleys in closed-loop systems.

For high-speed operation, the motor reaches a rated speed of 6000 rpm, allowing high cycle frequencies without the need for gearing. When the rotor is blocked, it can deliver a locked-rotor torque of 1.2 Nm while drawing a locked-rotor current of 1.65 A; these values indicate stall performance under load. Steady-state torque production is proportional to the current, with a torque constant of 0.73 Nm/A, so the drive only has to supply about 1.37 A for 1 Nm of output. The electromagnetic circuit is designed for a DC link voltage of 670 V, matching the intermediate bus used by high-speed servo inverters.

The motor operates in ambient temperatures from 0 to 40 °C, while an internal PTC thermistor monitors winding temperature between -5 and 155 °C to protect against overload. The rotor and bearings tolerate an axial load of up to 33 N, enabling light thrust coupling without premature wear. Mechanical linkage is provided through a shaft diameter of Ø11 × 23 mm with a keyway and feather key for positive torque transmission. The assembly withstands transportation and in-process shocks of up to 6 g, and it uses radiation and natural convection cooling, so no external fan or liquid circuit is required.