SE-B2.020.030-00.027 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SE-B2.020.030-00.027 is a synchronous servo motor from the SE Synchronous Servo Motors series. It features a flange size of 100 mm, a length of 230 mm, and a shaft with a keyway and feather key measuring 14 x 30 mm. The motor weighs 6.5 kg, delivers a maximum torque of 6.9 Nm, and has a nominal speed of 3000 rpm.
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Product Description:
The SE-B2.020.030-00.027 is a synchronous servo motor manufactured by Bosch Rexroth Indramat for the SE Synchronous Servo Motors series. This motor is intended for closed-loop drive systems where rapid speed and torque changes must be executed with high positional accuracy. When supplied with three-phase current from a compatible drive, the unit generates controlled shaft rotation that can move indexing tables, linear actuators, or packaging elements without the mechanical play associated with belts or gear cascades. Its compact form simplifies integration into machine frames where the space available for motion components is limited.
The motor mounts to machinery with a 100 mm diameter centering flange, a standard interface that keeps alignment error low during assembly. Under rated excitation, it reaches 3000 rpm, a speed suitable for light machining or conveyor duties. The motor provides a continuous standstill torque of 2.9 Nm, while the field-oriented control must limit the average phase current to the 2.7 A thermal rating. A torque constant of 1.10 Nm/A relates commanded current to produced torque and helps the drive calculate feed-forward gains. For short acceleration periods, the stator can accept 16 A, allowing momentary overloads without demagnetizing the rotor. The generated back electromotive force follows a voltage constant of 114 V per 1000 rpm, which the inverter must accommodate during operation.
During rapid indexing, the motor can deliver up to 6.9 Nm, providing a 2.4-to-1 ratio between peak and continuous torque for dynamic reserve. Rotor inertia is only 0.44 × 10⁻³ kg·m², so velocity reversals require minimal drive energy while load matching remains stable. The 230 mm overall length and 6.5 kg mass help keep the axis compact and limit the overhung load on support structures. Electrical response is influenced by a winding inductance of 76 mH and a resistance of 14.7 Ω, which govern current ripple and thermal dissipation. Power is transmitted through a shaft measuring 14 mm in diameter and 30 mm in length. The shaft has a keyway and feather key for positive engagement with a pulley, gearbox, or rigid coupling.
