SE-B2.020.030-10.028 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SE-B2.020.030-10.028 is a synchronous servo motor from the SE Synchronous Servo Motors series. It has a nominal speed of 3000 rpm, a static torque of 2.0 Nm, and a torque constant of 1.10 Nm per ampere. The motor weighs 6.5 kilograms and is 230 mm in length.
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Product Description:
The Bosch Rexroth Indramat SE-B2.020.030-10.028 is a brushless servo motor from the SE Synchronous Servo Motors series. It converts electrical energy into controlled mechanical motion for positioning and speed-control stages used in packaging equipment, textile machines, and automated assembly cells. The motor pairs with matching digital drives, enabling closed-loop operation through standard feedback channels that keep commanded velocity and torque under control. This arrangement supports accurate starts, stops, and speed changes during repetitive machine cycles. Brushless operation also reduces commutator wear and supports consistent response in continuous industrial use.
The motor reaches a nominal speed of 3000 rpm while maintaining synchronous operation with the drive inverter. At zero speed, it can hold a load with 2.0 Nm of static torque, and that output rises with phase current according to a torque constant of 1.10 Nm/A. Continuous standstill current is limited to 2.7 A, which helps keep thermal rise within insulation class limits. The motor has a voltage constant of 114 V/1000 rpm, so the generated counter-EMF rises with speed and influences the DC-bus margin required in the controller. Its winding inductance is 76 mH, providing natural current smoothing that supports fine position regulation. A 230 mm housing length, IM B5 flange construction, and a Ø14 k5 × 30 mm shaft without a keyway simplify direct coupling to precision gear stages and help conserve axial space.
The motor has a winding resistance of 14.7 Ω, so copper losses rise with current during repeated duty. Dynamic response benefits from a rotor inertia of 0.44 × 10⁻³ kg·m², which helps the axis accelerate quickly without demanding excessive control effort from the drive. Overall mass is 6.5 kg, allowing the unit to be mounted on moving machine elements where low payload matters. The moderate weight is useful on compact axes where extra moving mass can reduce responsiveness and increase mechanical loading on support components.
