Product Description:

The SE-B2.040.060-04.101 is a synchronous servo motor built by Bosch Rexroth Indramat for the SE Synchronous Servo Motors series. It converts drive current into controlled rotary motion for positioning tables, pick-and-place axes, and other automated machinery. Its closed-loop operation supports accurate velocity tracking and repeatable torque delivery during automated motion cycles.

This motor reaches a nominal speed of 6000 rpm, allowing compact mechanical stages to cycle quickly without additional gearing. It provides a continuous torque of 4.0 Nm while operating within its permitted thermal range. At standstill, the windings draw 10.0 A, which indicates the current demand placed on the drive electronics when the shaft is not rotating. The electromagnetic design provides a torque constant of 0.42 Nm/A, allowing the controller to calculate output torque from phase current. Copper loss is influenced by a winding resistance of 1.40 ohms, which contributes to heat generation under load. An integrated brake has a holding torque of 3.5 Nm and operates from a 24 V DC supply at 0.11 A. The shaft interface includes an 88-3 O-ring, a 90.4 mm collar, and a 14 mm keyed journal to support secure coupling and help prevent contaminant entry.

For rapid transients, the drive may command a peak current of 60 A, enabling the rotor to overcome inertia and friction during startup or quick reversals. The rotor has a mass moment of inertia of 0.75 × 10⁻³ kg·m², balancing dynamic response with load stability. A back-EMF voltage constant of 45 V/1000 rpm indicates the voltage generated as rotational speed increases. An electrical time constant of 6.6 ms indicates how quickly the stator current responds to command changes. The winding inductance is 9.4 mH, which affects current rise and the response of the control loop. These electrical characteristics assist with current-loop tuning for controlled acceleration, quick reversals, and precision indexing while limiting overshoot.