MKD025B-144-KGO-KN | Brushless Servo Motor

Product Overview

The MKD025B-144-KGO-KN is a high-precision brushless servo motor from Bosch Rexroth, a pioneer in industrial motion control. As part of the MKD series—renowned for compact design and dynamic performance—this motor is engineered to deliver precise torque and speed control, making it a cornerstone of automated systems requiring pinpoint motion accuracy.

At its core, the MKD025B-144-KGO-KN converts electrical energy into mechanical motion with exceptional repeatability, a critical trait in applications where even  (tiny deviations) can compromise product quality. Its design balances power density and compactness, allowing it to fit into tight spaces without sacrificing performance. What distinguishes the MKD025B-144-KGO-KN is its seamless integration with Rexroth’s servo drives (such as the MHD series), creating a synchronized motion control system that excels in rapid acceleration, smooth deceleration, and stable operation under varying loads. Whether in robotics, packaging, or precision manufacturing, this motor ensures consistent, reliable performance, making it a trusted choice for engineers seeking to optimize process efficiency.

Technical Specifications

Key Features and Benefits

The MKD025B-144-KGO-KN stands out for its exceptional dynamic response, a result of its low rotor inertia. This allows the motor to accelerate and decelerate rapidly, a critical advantage in applications like pick-and-place robotics, where cycle times depend on quick motion transitions. Even at high speeds, the motor maintains stability, reducing vibration and ensuring smooth operation—essential for tasks such as electronic component assembly, where precision down to 0.01 mm is required.

Durability is another hallmark. The MKD025B-144-KGO-KN’s IP65 rating protects against dust and low-pressure water jets, making it suitable for factory floors where exposure to coolants, lubricants, or airborne particles is common. Its robust construction, including a reinforced aluminum housing and heat-resistant windings, ensures a long service life even in continuous-duty cycles, minimizing replacement costs.

The integrated 2048-line encoder provides high-resolution feedback, enabling the motor to communicate position data to the drive with minimal latency. This closed-loop control loop ensures the MKD025B-144-KGO-KN stays on target, even under varying loads—ideal for CNC machines where tool paths must be followed with absolute accuracy. Compatibility with Rexroth’s drive systems simplifies setup, while support for industry-standard communication protocols ensures flexibility in mixed-vendor automation environments.

Application Scenarios

The MKD025B-144-KGO-KN thrives in industries where precision motion is non-negotiable. In packaging machinery, it powers the film-wrapping axes of snack packaging lines, where it adjusts tension with microsecond precision to prevent tearing or slack in the film—critical for maintaining seal integrity and product presentation. Its compact size allows it to fit into the tight confines of vertical form-fill-seal machines, a common challenge in space-constrained packaging facilities.

In medical device manufacturing, the MKD025B-144-KGO-KN drives the linear stages of automated syringe assembly systems. Here, it positions components like plungers and needles with sub-millimeter accuracy, ensuring sterile, consistent assembly—a requirement for regulatory compliance. Its low vibration also makes it suitable for laboratory automation, where it controls pipetting robots that transfer microliter volumes without spillage.

Machine tool applications benefit from its stability. In small CNC lathes, the MKD025B-144-KGO-KN powers the X and Z axes, maintaining feed rates within ±0.02 mm/min, which is vital for producing precision parts like aerospace fasteners. Its IP65 rating resists coolant splashes, a common hazard in machining environments, ensuring reliable performance shift after shift.

Related Models

• MKD025B-144-KP0-KN– Identical to MKD025B-144-KGO-KN but with a resolver encoder instead of incremental, preferred for high-electrical-noise environments.
• MKD041B-144-KGO-KN– Higher-torque variant (4.1 Nm) for applications requiring more power, such as larger robotic arms.
• MKD025B-144-KGO-KH– Low-temperature version rated for -20°C to +40°C, suitable for cold-storage automation (e.g., frozen food packaging).
• MKD025B-061-KGO-KN– Lower-speed model (1500 RPM) optimized for torque-heavy tasks like conveyor belt drives in precision material handling.
• MKD037B-144-KGO-KN– Mid-range torque (3.7 Nm) with a larger 80 mm flange, compatible with heavier loads in metalworking machinery.
• MKD025B-144-KGO-KS– Sanitization-ready variant with food-grade lubricants, ideal for pharmaceutical or food processing equipment.
• MKD025B-144-KGO-K0– Basic version without a keyway, designed for applications using friction clutches or collet shafts.

Installation and Maintenance

Installing the MKD025B-144-KGO-KN requires careful alignment between the motor flange and the driven load to avoid shaft misalignment, which can cause premature bearing wear. The 60 mm flange mounts to a flat, rigid surface using M5 bolts torqued to 2.5 Nm; use of a dowel pin is recommended for repeatable positioning in modular systems. Electrical connections require shielded cables for the power and encoder signals, with the shield grounded at both ends to reduce electromagnetic interference. Ensure the ambient temperature stays within -10°C to +40°C, as exceeding this range can degrade performance.

For maintenance, inspect the MKD025B-144-KGO-KN quarterly for signs of damage, such as cracks in the housing or loose connectors. Clean the exterior with a dry cloth to remove dust; avoid high-pressure water, which can compromise the IP65 seal. Check the encoder cable for fraying, as damaged wiring can disrupt feedback signals. Lubrication is not required, as the motor’s bearings are pre-greased for life. If vibration increases or speed accuracy drops, verify alignment and encoder calibration—Rexroth’s diagnostic tools can help identify issues like rotor imbalance or drive-motor mismatch.

Product Warranty

Bosch Rexroth provides a 2-year warranty for the MKD025B-144-KGO-KN, covering defects in materials and workmanship. This includes free repair or replacement of faulty units, with priority service for critical applications to minimize downtime. Beyond the warranty period, customers have access to Rexroth’s global service network, offering technical support, spare parts, and on-site troubleshooting. The company’s commitment to quality is underscored by rigorous testing—each MKD025B-144-KGO-KN undergoes 100% performance validation before shipment, ensuring it meets strict industrial standards. Whether through remote diagnostics or local service centers, Rexroth ensures customers can rely on the motor’s performance for years, reinforcing its value as a long-term investment in automation precision.