The REXROTH INDRAMAT MKD071B-061-KP1-KS (Part Number: R911295889) is a high-performance synchronous AC servo motor designed for precision motion control in industrial automation. This MKD series motor is engineered to provide high torque density and exceptional dynamic response, making it an ideal choice for applications requiring rapid acceleration and reliable positioning. Featuring a maintenance-free brushless design, it is built to sustain long-term operation in demanding factory environments.

 

Product Parameters & Datasheet

The technical specifications for the REXROTH MKD071B-061-KP1-KS are detailed in the following datasheet parameters:

• Part Number: R911295889
• Motor Frame Size: 071 (Mid-range frame for high torque output)
• Motor Length: B (Standard length for optimized power-to-size ratio)
• Winding Code: 061 (Specific electrical winding for speed/torque characteristics)
• Feedback System: K (Digital integrated encoder for high-resolution feedback)
• Shaft Design: P (Shaft with keyway per DIN 6885-1 for secure coupling)
• Holding Brake: 1 (Integrated 10.0 Nm permanent magnet holding brake)
• Connection Type: KS (Standard terminal or plug-in connector interface)
• Continuous Torque at Standstill: 8.0 Nm
• Maximum Speed: 4,500 RPM (depending on drive controller settings)
• Insulation Class: F (Thermal resistance up to 155°C)
• Enclosure Rating: IP65 (Dust-tight and protected against water jets)

 

Product Technical Description

The MKD071B utilizes advanced permanent magnet technology to achieve a high torque-to-inertia ratio. The integrated digital encoder provides the drive controller with absolute position data, which eliminates the need for time-consuming homing cycles after system startup. The “KS” connection architecture ensures robust electrical contact even in high-vibration environments. Additionally, the integrated 10 Nm holding brake (Option 1) provides a fail-safe mechanism to hold the load in place during power loss or emergency stop sequences.

 

Application Fields

This Indramat servo motor is widely utilized in high-precision industrial sectors:

• Machine Tools: Powering feed axes in CNC machining centers and lathes.
• Packaging Technology: Driving high-speed conveyor systems and palletizing robots.
• Printing and Paper: Managing precise web tension and roller synchronization.
• Food Processing: Operating in automated filling and capping lines requiring washdown protection (IP65).
• Automotive Assembly: Driving robotic arms and specialized assembly jigs.

 

Country of Origin

The REXROTH INDRAMAT R911295889 is manufactured in Germany, ensuring adherence to the world’s highest engineering and quality control standards.

Product Usage Instructions

1. Installation: Mount the motor flange to a rigid, flat surface. Ensure the mounting area allows for natural convection cooling to prevent thermal derating.
2. Coupling: Use a torsionally stiff but flexible coupling when connecting the keyed shaft to the load. This prevents excessive radial forces from damaging the motor bearings.
3. Electrical Connection: Connect the power and feedback cables using the KS connectors. Use only Rexroth-certified shielded cables to prevent electromagnetic interference (EMI) from affecting signal integrity.
4. Brake Control: Ensure the 24 Vdc brake supply is wired correctly. The holding brake must be released (energized) before the motor is commanded to rotate to avoid mechanical wear.
5. Environmental Care: While the motor is rated IP65, ensure that cables are routed with a “drip loop” to prevent fluids from following the cable directly into the connector housing.