REXROTH MKD071B-035-KG1-KN Servo Motor

In high-stakes industrial automation environments where precision motion is non-negotiable, the Bosch Rexroth MKD071B-035-KG1-KN steps up as a critical solution for engineers battling inconsistent positioning or torque in compact, high-speed applications. Picture a pick-and-place system in electronics assembly where even a fraction of a millimeter off-target spikes defect rates, or a small-scale packaging line where motor lag disrupts synchronization—these are the challenges this synchronous servo motor is built to solve. With its resolver-based feedback system, it delivers pinpoint accuracy for position and velocity, ensuring clean I/O signals that keep control loops tight, even under fluctuating loads or electrical noise.

This motor is a lifeline in process control setups like food and beverage packaging or precision material handling, where high reliability in motion execution prevents costly bottlenecks. The Bosch Rexroth MKD071B-035-KG1-KN excels by offering compact power delivery with natural convection cooling, ideal for space-constrained systems or environments where forced cooling isn’t feasible. For teams modernizing legacy setups, its seamless integration with EcoDrive controllers minimizes rewiring, letting you focus on optimizing throughput rather than wrestling with compatibility. In demanding industrial automation scenarios requiring continuous uptime, this motor’s robust design reduces vibration and thermal drift, ensuring system stability and scalability to meet evolving production demands. By prioritizing signal reliability and modular integration, the Bosch Rexroth MKD071B-035-KG1-KN empowers engineers to achieve consistent performance without the overhead of constant recalibration.

The Bosch Rexroth MKD071B-035-KG1-KN operates as a compact AC synchronous servo motor within the MKD series, positioned at the actuator level of the automation stack. It converts electrical signals from EcoDrive controllers (like the DKC series) into precise mechanical motion through a permanent magnet rotor, delivering controlled torque and speed via feedback from its integrated resolver and multiturn absolute encoder (up to 32768 turns). This setup ensures high-resolution data for multi-axis coordination, feeding accurate position updates to PLCs or HMIs over PROFIBUS or SERCOS protocols.

Mounted via a 115 mm flange, it connects to loads through a plain shaft with a sealing ring to block dust or liquid ingress, making it suitable for rugged I/O architectures. It draws power from a shared DC bus, enabling energy-efficient regenerative braking when paired with compatible drives. Built-in diagnostics monitor rotor temperature and winding status, relaying alerts to prevent overloads and support redundancy in critical setups. In a typical system, the Bosch Rexroth MKD071B-035-KG1-KN acts as the muscle translating high-level motion commands into smooth, repeatable actions, integrating seamlessly with upstream controllers to maintain real-time responsiveness while its IP65 rating protects against environmental wear, ensuring fault-tolerant performance in diverse automation frameworks.

Choosing the Bosch Rexroth MKD071B-035-KG1-KN equips your system with a motor engineered for relentless precision, delivering steady 5.2 Nm torque that resists drift in high-speed cycles, cutting scrap rates and boosting confidence in output consistency. Its compact footprint and convection cooling shine in tight spaces, eliminating the need for external fans and reducing maintenance complexity in cleanroom or dusty settings, which translates to lower operational costs.

The resolver’s high-fidelity feedback streamlines diagnostics, feeding actionable data to your drive system so technicians can spot anomalies like temperature spikes early, minimizing downtime without invasive checks. Integration is equally efficient—pairing with standard controllers requires minimal parameter tuning, reducing engineering overhead and accelerating deployments. This motor’s ability to maintain performance across demanding runs ensures long-term reliability, letting your team scale operations or adapt to new process requirements with ease, all while preserving the integrity of your automation investment.

In electronics manufacturing, the Bosch Rexroth MKD071B-035-KG1-KN drives pick-and-place robots, meeting stringent demands for rapid, precise positioning in cleanroom conditions, ensuring critical system uptime and defect-free assembly in high-throughput lines.

Food packaging lines rely on it for synchronized conveyor and sealing tasks, where its fast data cycles and environmental sealing maintain accuracy in humid or dusty settings, supporting continuous operation.

In small-scale material handling for logistics automation, this motor powers compact sorting arms, delivering high reliability under repetitive cycles to optimize throughput in space-limited process control environments.

MKD071B-035-KP1-KN – Fan-cooled model for higher 3.2 kW output in heat-intensive applications.

MKD071B-035-KG0-KN – Standard resolver version for simpler, cost-effective position control.

MKD071B-035-KP0-KS – Brake-equipped model for vertical applications needing secure holding.

MKD090B-047-KG1-KN – Larger 12 Nm motor for heavier loads in similar control setups.

MKD041B-144-KG1-KN – Smaller 1.5 Nm option for ultra-compact, low-torque tasks.

MKD071B-035-GP0-KN – Gearhead-integrated variant for high-torque, low-speed operations.

R911279428 – Firmware kit for enhanced drive compatibility and tuning flexibility.

Before installing the Bosch Rexroth MKD071B-035-KG1-KN, ensure the 115 mm flange aligns with your mount’s bolt circle and verify shaft runout stays under 0.03 mm to avoid premature wear. Match it with a DKC-series drive, checking firmware compatibility via Rexroth’s DriveTop tool to ensure encoder alignment. Ambient temperatures must stay below 40°C—consider baffles for heat dissipation in cramped enclosures—and use shielded cables for feedback to block EMI in noisy plants.

For maintenance, inspect shaft seals every three months for dust or grease buildup, especially in food-grade settings, and wipe exterior surfaces to maintain cooling efficiency. Poll resolver data bi-monthly via the drive’s diagnostic port to track thermal or vibration trends, and run an annual no-load test to detect bearing noise. Firmware updates, handled through the drive, keep encoder precision sharp. This routine minimizes disruptions, keeping your automation humming with predictable uptime.