HB Torque zero-gravity pneumatic manipulator lifting a Toyota MG1 stator on an automated production line.

Case Study: Achieving Zero-Damage Precision in Toyota MG1 Stator Assembly

The Challenge: Handling the Heart of Toyota Hybrid System (THS) The MG1 (Motor Generator 1) is the core of Toyota’s world-renowned hybrid powertrain. For Tier-1 suppliers, handling the MG1 stator is a high-stakes task. These stators utilize advanced Hairpin Winding technology—dense, rigid copper pins that provide superior efficiency but are extremely sensitive to mechanical impact. A single micro-scratch on the insulation layer or a slight deformation of the windings can lead to a total component failure.

The Requirement: Precision Beyond Traditional Lifting Toyota’s lean manufacturing standards demand more than just "moving" a part. The assembly line required a solution that could:

  1. Eliminate Human Error: Neutralize the weight of the heavy stator to prevent accidental drops.

  2. Protect Delicate Windings: Ensure the gripping mechanism never touches or stresses the hairpin copper pins.

  3. Millimeter-Perfect Alignment: Provide the stability needed to insert the stator into the housing with zero friction.

    HB Torque zero-gravity pneumatic manipulator lifting a Toyota MG1 stator on an automated production line.

The HB Torque Solution: Engineered for HEV Excellence To meet these rigorous standards, HB Torque deployed a customized pneumatic zero-gravity manipulator system. This wasn't a standard off-the-shelf lift; it was a bespoke engineering response to the THS production environment.

  • 100% Zero-Gravity Sensitivity: Our balancing technology allows the operator to guide the MG1 stator with the touch of a finger, providing the "feel" necessary for precision alignment.

  • Custom-Contoured Fail-Safe Gripper: We designed a specialized end-effector that bypasses the copper windings entirely, gripping the stator only by its non-sensitive structural housing.

  • Rigid-Arm Stability: Unlike cable hoists that sway, our rigid-arm structure ensures the component stays perfectly level during the entire transfer process.

    Close-up of Toyota MG1 hybrid motor stator with hairpin windings being handled by HB Torque manipulator.

Why Leading Global Automakers Choose HB Torque Headquartered in Suzhou, the epicenter of the global EV supply chain, HB Torque understands the evolution of motor technology. From BMW trailer hitches to Toyota’s MG1 stators, our systems are built on a foundation of "Safety First, Precision Always."

The Result: Optimized Yield and Ergonomics By integrating the HB-RS series manipulator, the production facility achieved a near-zero scrap rate during the stator loading phase and significantly reduced operator fatigue, ensuring consistent quality across three-shift operations.

Does your EV/HEV production line require a precision handling upgrade? Our engineering team specializes in non-standard solutions for stators, rotors, and battery packs.

👉 Request a Technical Consultation & CAD Proposal

📧 Email: contact@hbtorque.com 📱 WhatsApp: +86 138 1912 6213

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