MST450D-0006-FT-NZCD-N315 Bosch Rexroth Indramat
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MPN: R911409133
The Bosch Rexroth Indramat MST450D-0006-FT-NZCD-N315 is a synchronous torque motor in the MST Synchronous Torque Motors series with a rated power of 5.10 kW and rated speed of 60 rpm. It delivers a maximum torque of 1800 Nm and a standstill torque of 900 Nm, with a rated current of 18.8 A. The motor has a stator mass of 38.7 kilograms and features a winding resistance of 3.9 Ohms at 20 degrees Celsius.
Internal Product Review
The MST450D-0006-FT-NZCD-N315 is a Bosch Rexroth Indramat synchronous torque motor with 810 Nm rated torque and 60 rpm rated speed. Strong direct-drive capability shows in the 900 Nm standstill torque and 1800 Nm maximum torque, making the unit an excellent choice for demanding motion applications.
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Product Description:
The MST450D-0006-FT-NZCD-N315 is a frameless direct-drive motor from Bosch Rexroth Indramat's MST Synchronous Torque Motors series. As a low-speed, high-torque stator-rotor set, it mounts directly to rotary tables, indexing heads, or extruder screws where gearboxes are undesirable. By generating high continuous torque at very low speed, the unit simplifies the mechanical layout and improves positioning accuracy in industrial automation systems. Because the motor is integrated into the machine structure, it can reduce backlash and remove gear stages or couplings that add compliance.
At its nominal operating point, the motor delivers 810 Nm while drawing 18.8 A and turning at 60 rpm. That combination yields a rated mechanical output of 5.10 kW, and iron and copper losses add up to 4.00 kW of heat that must be removed by the machine's cooling system. During short bursts, the winding can accept a maximum current of 50.0 A, enabling the electromagnetic system to reach a peak torque of 1800 Nm for acceleration or disturbance rejection. Dynamic behavior is influenced by a phase inductance of 31 mH in series with a resistance of 3.9 Ω, which affects the electrical time constant and helps filter inverter switching ripple. The motor can also hold load at standstill with 20.9 A, reducing the need for external clamps in low-speed positioning tasks.
To support continuous stall conditions, the rotor-stator geometry provides a standstill torque of 900 Nm, generated with the aid of a torque constant of 43.08 Nm/A, so each ampere contributes predictably to process force. The laminated stack weighs 38.7 kg, which helps absorb thermal swings while still permitting direct embedding into compact housings. The voltage constant is 2.830 V min⁻¹, which sets back EMF as speed rises, and a discharge capacity of 14.5 nF provides a path for common-mode currents toward the drive. This operating profile is suitable for rotary tables and similar axes that require smooth torque delivery at standstill or during slow indexing moves.
