The REXROTH INDRAMAT MKD041B-144-KP1-KS (Part Number: R911295887) is a high-performance synchronous AC servo motor designed for demanding industrial automation tasks. This MKD series motor is renowned for its high power-to-weight ratio and maintenance-free operation, thanks to its brushless design and permanent magnet technology. It is specifically engineered to provide precise motion control, rapid acceleration, and high reliability in continuous-duty applications.

 

Product Parameters & Datasheet

The technical specifications for the REXROTH MKD041B-144-KP1-KS are detailed in the following datasheet parameters:

• Part Number: R911295887
• Motor Frame Size: 041 (Small-frame, high-density design)
• Motor Length: B (Medium length for balanced torque/inertia)
• Winding Code: 144 (Specific electrical characteristics for speed/torque)
• Feedback System: K (Digital integrated encoder for position sensing)
• Shaft Design: P (Shaft with keyway per DIN 6885-1)
• Holding Brake: 1 (Integrated 2.2 Nm permanent magnet holding brake)
• Connection: KS (Standard terminal connector or plug-in connection)
• Max Speed: Up to 7,500 RPM (depending on drive configuration)
• Continuous Torque at Standstill: 2.7 Nm
• Insulation Class: F (High thermal resistance)
• Enclosure Rating: IP65 (Total protection against dust and water jets)

 

Product Technical Description

The MKD041B utilizes high-coercivity rare-earth magnets to achieve superior dynamic performance. Its “Digital” designation refers to the integrated feedback system, which provides absolute position data to the Indradrive or Diax drive controllers, eliminating the need for complex homing procedures after a power cycle. The Revision KS model features a robust housing and high-grade bearings designed to withstand the radial and axial loads common in high-speed machinery. The integrated holding brake (Option 1) ensures the load remains stationary during power loss or emergency stop conditions.

 

Application Fields

This Indramat motor is extensively used in precision-driven sectors, including:

• Packaging Machinery: Powering high-speed film wrapping and labeling systems.
• Printing Industry: Controlling precise paper tension and registration in multi-color presses.
• Machine Tools: Providing feed motion for CNC lathes and milling centers.
• Assembly Automation: Driving robotic pick-and-place units and rotary index tables.

Country of Origin

The REXROTH INDRAMAT R911295887 is manufactured in Germany, representing the peak of European motion control engineering and durability.

 

Product Usage Instructions

1. Mounting: Install the motor using the flange-mount configuration. Ensure the mounting surface is clean and flat to facilitate heat dissipation from the motor housing.
2. Coupling: Use a flexible coupling when connecting the keyed shaft (P-type) to the load to compensate for minor misalignments and prevent bearing wear.
3. Electrical Connection: Connect the power and feedback cables using the KS-type connectors. Ensure the cables are shielded and the shields are grounded at the drive end to prevent electromagnetic interference (EMI).
4. Brake Operation: The 24 Vdc holding brake is designed for static holding only. Do not use the brake to stop a rotating motor under normal operating conditions, as this will lead to premature wear of the friction linings.
5. Cooling: While the MKD041B is designed for natural convection, ensure there is sufficient airflow around the motor housing, especially in high-duty cycle applications.