Yaskawa SGMKS-75A5A21

1. Product OverviewThe SGMKS-75A5A21 is an AC servo motor developed by YASKAWA for high-performance industrial automation applications. Equipped with a high-rigidity rotor and a high-resolution absolute encoder, it is specifically engineered for scenarios requiring high-speed and precise positioning, such as robotics, CNC machine tools, and packaging equipment. As a 75 kW-class product in Yaskawa’s SG-series servo motor lineup, it delivers high torque and a wide speed range when powered by a three-phase 200 V–230 V supply.
2. Key Technical Specifications

• Rated Power: Approx. 7.5 kW (for 75 mm shaft diameter)
• Rated Speed: 1500 r/min (adjustable from 0 to 3000 r/min via a compatible drive)
• Rated Torque: Approx. 47.7 N·m (peak instantaneous torque: approx. 143 N·m)
• Inertia: 0.47 kg·m² (enabling rapid acceleration and deceleration)
• Operating Voltage: Three-phase AC 200–230 V, fully compatible with Yaskawa SGDV-series drives
• Encoder: Absolute encoder with a resolution of 262,144 pulses/rev, supporting high-precision position feedback
• Protection Class: IP67, suitable for humid or dusty environments
• Operating Temperature Range: -10 ℃ to +50 ℃, humidity ≤ 90% (non-condensing)

3. Product Features

• High Torque Density: Delivers greater output torque for its size, ideal for heavy-load or high-acceleration applications.
• High-Resolution Absolute Encoding: Achieves accurate position detection immediately after power-on, eliminating the need for a homing sequence and enhancing system reliability.
• IP67 Protection Rating: Dust-proof and waterproof, designed to withstand harsh industrial environments such as factory floors and outdoor assembly lines.
• Wide Voltage Compatibility: Works with three-phase 200–230 V power supplies, enabling direct deployment in grid environments across different regions.
• Modular Design: Features three quickly detachable modules—the motor body, drive interface, and encoder—facilitating easy maintenance and replacement.

4. Structure and Components

• Motor Body: Incorporates a high-rigidity rotor and low-loss stator, laminated with high-permeability silicon steel sheets to ensure high efficiency and low heat generation.
• Drive Interface: Equipped with a standardized connector for SGDV-series drives, supporting fieldbus protocols including CAN, EtherCAT, and PROFINET.
• Encoder Unit: Built-in absolute optical encoder housed in a sealed, IP67-rated enclosure for robust protection.
• Cooling System: Integrated air cooling or optional water-cooled heat sinks maintain safe operating temperatures during long-term, high-load operation.

5. Typical Application Areas

• Industrial Robotics: Powers joint drives and end-effectors, providing high-speed, precise attitude control.
• CNC Machine Tools: Drives spindles and feed axes to enable high-precision machining and rapid direction changes.
• Packaging and Material Handling Equipment: Enables positioning and synchronous control of high-speed conveying and sorting machinery.
• Automated Assembly Lines: Supports multi-axis coordinated motion and vision-guided precision positioning.

6. Installation Guidelines

• Power Supply and Grounding: Ensure correct three-phase power phase sequence and reliable chassis grounding to prevent electromagnetic interference.
• Mechanical Mounting: Use flanges or bolt bases provided by the manufacturer to maintain rigid axial and radial alignment, avoiding resonance issues.
• Encoder Alignment: Align the encoder axis concentrically with the motor shaft during installation to prevent error accumulation.
• Heat Dissipation Layout: For high-temperature environments or continuous full-load operation, install additional external air-cooled or water-cooled heat sinks.

7. Maintenance and Servicing

• Regular Inspections: Check flange bolt tightness and bearing lubricant condition every 6–12 months.
• Encoder Cleaning: The dust- and moisture-proof enclosure typically requires no disassembly. If reading anomalies occur, gently blow air through the enclosure opening using compressed air.
• Drive Matching: When replacing a drive, ensure parameters (current limits, torque compensation) match the motor’s rated values to prevent overloading.
• Troubleshooting: Use Yaskawa’s MotionWorks software or fieldbus diagnostic functions to read fault codes and quickly identify issues.

If you would like to learn more about our products and services, please feel free to contact us at any time!

• Sales Manager : Jinny
• Email : sales5@xrjdcs.com
• Whatsapp/Mobile:+86 15359273791

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