Siemens 1FK7022-5AK71-1LH0 SIMOTICS S Synchronous Servo Motor – 0.85Nm, 6000rpm

Why Choose the Siemens 1FK7022-5AK71-1LH0 for Your Motion Control Needs?

When your production line demands precise positioning and reliable torque in a compact footprint, the Siemens 1FK7022-5AK71-1LH0 SIMOTICS S synchronous servo motor delivers. This permanent-magnet synchronous motor combines high dynamic performance with robust construction, making it a trusted choice for demanding industrial automation applications.

Product Overview

The 1FK7022-5AK71-1LH0 is part of the Siemens SIMOTICS S 1FK7 family of compact servo motors. It features a shaft height of 28 mm and a flange size IMB5 (also compatible with IM V1 and IM V3 mounting orientations). The motor is naturally cooled and comes with a plain shaft tolerance N, along with an integrated holding brake for secure position holding when power is removed. Its degree of protection IP64 ensures resistance to dust and splashing water, suitable for many industrial environments.

Key Technical Specifications

Rated torque: 0.85 Nm at 100 K overtemperature

Rated speed: 6000 rpm

Rated power: 0.38 kW

Encoder system: Absolute encoder AM20DQ – 20-bit resolution (1048576 steps, encoder-internal 512 S/R) plus 12-bit multi-turn (4096 revolutions)

Interface: DRIVE-CLiQ for digital communication with Siemens drives

Holding brake: Integrated, electrically released

Temperature monitoring: Pt1000 sensor

Connectors: Power and signal connectors rotatable by 270° for flexible cable routing

Vibration severity: Grade A

Real-World Applications

This servo motor excels in applications requiring high-speed positioning and consistent torque. Typical use cases include:

Packaging machinery: High-speed pick-and-place, labeling, and carton erectors benefit from the 6000 rpm speed and precise encoder feedback.

Machine tool feed axes: The compact size and holding brake make it ideal for vertical axes where load holding is critical.

Robotics: Small articulated or SCARA robots leverage the 0.85 Nm torque and DRIVE-CLiQ integration for coordinated motion.

Installation & Setup Guidance

Mount the motor using the IMB5 flange with the appropriate adapter plate. Ensure the plain shaft is aligned within the specified concentricity tolerance of 0.08 mm and axial runout tolerance of 0.08 mm. The connectors can be rotated up to 270° before final tightening, simplifying cable routing in tight spaces. Use shielded DRIVE-CLiQ cables for encoder communication and follow Siemens wiring guidelines for power connections. The holding brake requires a separate 24 VDC supply (not included) – verify polarity and current rating per the motor datasheet.

Maintenance & Reliability

With natural cooling and no external fan, the 1FK7022-5AK71-1LH0 requires minimal maintenance. Periodically inspect the shaft seal and connectors for wear or contamination. The Pt1000 temperature sensor provides real-time winding temperature monitoring, allowing the drive to protect the motor from overload. The absolute encoder eliminates the need for homing after power loss, reducing downtime. For long-term reliability, keep the motor within its rated torque and speed limits and ensure adequate ventilation around the housing.

Compatibility & Integration

The DRIVE-CLiQ interface enables direct connection to Siemens SINAMICS S120, G120, and V90 drive systems. The 20-bit absolute encoder provides high-resolution position feedback for closed-loop control. The motor is designed for use with Siemens motion controllers such as SIMOTION and S7-1500T. For third-party drives, consult the encoder data (AM20DQ) to ensure compatibility.

Selection Guide & Purchasing Advice

Before ordering, verify that your drive system supports DRIVE-CLiQ communication and the AM20DQ encoder protocol. Confirm the mechanical interface matches your load – shaft diameter and flange pattern are critical. The holding brake adds axial load capacity but also requires a brake control circuit. BluePLC Industrial stocks the Siemens 1FK7022-5AK71-1LH0 and can provide application support. Contact us for current lead times and pricing.