KSD041C-0420-NN-M3-1G2-NNNN Bosch Rexroth Indramat
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The Bosch Rexroth Indramat KSD041C-0420-NN-M3-1G2-NNNN is part of the KSD IndraDrive Mi Motors series and features a Hiperface capacitive multi-turn encoder with 4096 revolutions and 16 signal periods. This motor has a maximum torque of 9.4 Nm, a maximum current of 6.8 A, and uses natural convection for cooling. It also provides a holding torque of 4.00 Nm with a 24 V DC holding brake and has a plain shaft style.
Internal Product Review
The KSD041C-0420-NN-M3-1G2-NNNN is a Bosch Rexroth KSD IndraDrive Mi motor with natural convection cooling and a Hiperface capacitive multi-turn encoder. A 24 V DC holding brake with 4.00 Nm holding torque adds secure axis retention, making the unit an excellent choice for precise motion control.
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Product Description:
The KSD041C-0420-NN-M3-1G2-NNNN is a decentralized servo motor drive produced by Bosch Rexroth Indramat for the KSD IndraDrive Mi Motors series. Designed for direct mounting on a machine frame, the unit integrates power electronics with the motor to reduce cabinet space and simplify wiring. In automated packaging, assembly, and material-handling cells, it converts fieldbus commands into precisely controlled rotary motion for coordinated multi-axis positioning tasks. Its decentralized arrangement also shortens cable routes between the drive electronics and motor.
Cooling is handled by natural convection, so no forced airflow is required when ambient air can circulate freely around the housing. A Hiperface capacitive multi-turn encoder provides an absolute position range of 4096 revolutions and produces 16 signal periods per revolution for accurate position interpolation. The electrically released brake operates from 24 V DC and secures the shaft with a holding torque of 4.00 Nm when the brake is not energized. Electrical loading ranges from a standstill current of 1.5 A to a peak current of 6.8 A, which must be considered when sizing shared DC-bus supplies. The plain shaft supports direct coupling to compatible gearboxes or clamping devices. A torque constant of 1.60 Nm/A describes the relationship between motor current and generated torque, while a thermal time constant of 13 minutes indicates the winding response to sustained loading.
The motor can produce a maximum torque of 9.4 Nm, supporting rapid acceleration during short positioning movements. The rotor has an inertia of 0.00019 kg·m², allowing quick reversals without placing excessive inertial demand on the controller. For sustained stall operation, the motor supplies 2.2 Nm at a winding temperature rise of 60 K without exceeding its thermal limit. Its back-electromotive-force gradient is 98.2 V/1000 rpm, so the drive must maintain sufficient DC-link voltage at higher speeds to avoid premature field weakening. The available torque supports indexing tables, pick-and-place heads, and carton erectors that require frequent acceleration and deceleration. Moderate rotor inertia also permits responsive gain settings in applications with rapidly changing motion profiles.
