Product Description:

The SE-B5.700.020-04.000 is a synchronous servo motor produced by Bosch Rexroth Indramat for the SE Synchronous Servo Motors series. It converts a controlled three-phase electrical input into accurate rotary motion for indexing tables, gantry axes, and other motion systems that demand tight velocity and position control in industrial automation. The motor integrates a permanent-magnet rotor with closed-loop feedback, allowing the connected drive to modulate torque in real time and maintain repeatable cycle times under varying loads.

During continuous duty, the unit reaches a nominal speed of 2000 rpm while producing a static shaft torque of 74 Nm. To sustain this load, it draws a standstill current of 43 A and has a torque constant of 1.71 Nm/A. The internal winding set has an inductance of 4.2 mH and a resistance of 0.19 Ω, which affect current rise time and thermal dissipation. A back-EMF value of 185 V/1000 rpm indicates the commutation voltage required from the servo drive. When operated in SM 50/100 mode, the motor can deliver a short-term torque of 149 Nm. Mechanical coupling is handled by a 32 × 58 mm shaft fitted with an A10 × 8 × 50 feather key for secure torque transfer.

An electromagnetic holding brake rated at 56 Nm secures the axis whenever power is removed. The brake operates from a 24 V DC supply with an allowable variation of ±10%. Dynamic operation is supported by a peak phase current of 261 A, allowing rapid acceleration of the rotor and tachogenerator assembly, which has an inertia of 28.8 × 10⁻³ kg·m². This inertia provides a balance between responsiveness and rotational stability during speed changes. The complete motor, including the brake, weighs 57 kg and measures up to 537 mm in overall length. These physical values affect the required mounting space and the load placed on the supporting machine structure.