MDD115D-N-015-N5L-180PA0
MDD Synchronous Motors
The Bosch Rexroth Indramat MDD115D-N-015-N5L-180PA0 from the MDD Synchronous Motors series delivers robust performance in industrial automation applications. This Motor Size 115 unit is rated for a Nominal Speed of 1500 min⁻¹ and offers a Theoretical Maximum Torque of 177.3 Nm with a continuous Holding Torque of 57 Nm. Its precision design features a Centering Diameter of 180 mm and a compact Motor Length Code D housing for streamlined cabinet integration. Engineered with Standard Balancing, the motor ensures vibration-free operation across its speed range.
Thermal management is optimized through a surface-cooled configuration, raising the Continuous Current at Standstill from 38.5 A to 59.5 A when needed. The torque delivery scales predictably with a Torque Constant at 20°C of 1.48 Nm/A and a Maximum Current of 173.4 A, enabling high-dynamic motion profiles. Stiffness and control precision are enhanced by the built-in Digital Servo Feedback (DSF) interface, which pairs seamlessly with Bosch Rexroth digital drives. The robust construction and Standard Housing maintain integrity in ambient temperatures from 0°C to +45°C, meeting stringent industrial climate requirements.
Installation is simplified via a keyed Shaft Type keyway and a reliable Connector-style Connection Type that eliminate miswiring during fast changeovers. The motor’s Rotor Moment of Inertia of 271 x 10⁻⁴ kg·m² affords stable dynamic response, while the design without a blocking brake reduces maintenance points. Classified as a dedicated Product Type motor for digital drive controllers, this MDD series unit is ideal for high-precision manufacturing, motion control, and automation systems that demand both power density and field-proven Rexroth quality.
Technical Specifications
Balancing
Standard
Holding Brake
Without blocking brake
Centering Diameter
180 mm
Housing
Standard
Motor Feedback
Digital servo feedback (DSF)
Motor Length Code
D
Motor Size
115
Nominal Speed
1500 min⁻¹
Shaft Type
keyway
Connection Type
Connector
Product Type
Motor for digital drive controllers
Rotor Moment Of Inertia
271 x 10^-4 kgm^2
Maximum Current
173.4 A
Theoretical Maximum Torque
177.3 Nm
Torque Constant At 20°c
1.48 Nm/A
Continuous Current At Standstill
38.5 A (59.5 A with surface cooling)
Permissible Ambient Temperature
0°C ... +45°C
Frequently Asked Questions
Why specify surface cooling when the duty cycle peaks near standstill?
Its surface cooling elevates continuous current at standstill from 38.5 A to 59.5 A for delivering higher continuous torque without exceeding thermal limits. It widens the constant-torque envelope for demanding holding/creep operations.
What does the torque constant 1.48 Nm/A imply for drive sizing?
It expresses torque per ampere for simplifying current-loop tuning and inverter selection. Its 1.48 Nm/A means the controller can predict torque output linearly with phase current for repeatable motion profiles.
How does the 271×10⁻⁴ kg·m² rotor inertia affect servo behavior?
Its moderate inertia damps speed ripple and improves stability against load disturbances. It supports smoother acceleration ramps and reduces sensitivity to cogging during synchronized multi-axis moves.
What integration benefits come from the 180 mm centering diameter and Motor Length Code D?
It eases coaxial alignment with gearheads and machine frames, while Length D packaging facilitates cabinet and machine-side clearances. It shortens mechanical setup and maintains shaft-to-load concentricity.
Why is a keyed shaft (keyway) advantageous in torque-dense couplings?
The keyways provides positive torque transmission and simplify phase alignment during commissioning. Its interface resists micro-slip in reversing cycles and eases repeatable hub repositioning after maintenance.
Internal Product Review
The Rexroth Indramat MDD115D-N-015-N5L-180PA0 motor possess 1.48 Nm/A of torque constant. It uses DSF feedback system and offers 1500 min⁻¹ of angular speed. This unit delivers 57 Nm holding torque and utilizes 59.5 A of standstill current. It depends on surface cooling for staying in ambient thermal range and it possesses a keyway shaft design. Its inertia value is specified as 271×10⁻⁴ kg·m² to align with CNC, packaging, printing, textile and robotics systems.
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