Round Magnet Safety Key W Key Lock 32mm (Body) 19mm (Key )9mm .75" (Magnet) Treadmill

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Round Magnet Safety Key With Center Lock – Treadmill Replacement

32mm Body / 19mm Key Insert / 9mm Magnet

This round magnetic treadmill safety key features a unique center-lock magnetic insert design, combining both a physical alignment key and magnetic contact for secure engagement. Designed for treadmills requiring a 32mm outer housing with a centered magnetic lock, this style helps ensure stable placement and reliable emergency stop operation.


🔩 Key Features

  • Center Key Lock Design
    Built with a centered alignment insert that helps position the key correctly on the treadmill console.
  • 9mm Magnetic Contact
    Compact embedded magnet activates the treadmill safety switch when properly seated.
  • 32mm Round Housing
    Larger outer body improves stability and alignment during use.
  • Magnetic Emergency Stop Function
    Removing the key immediately shuts off the treadmill for safety.
  • Clip-On Safety Lanyard
    Includes cord and clothing clip for automatic emergency stop activation.

📐 Specifications

  • Body Diameter: 32mm (1.26")
  • Center Key Diameter: 19mm (0.75")
  • Magnet Diameter: 9mm (0.35")
  • Style: Round magnetic key with center lock insert
  • Material: ABS plastic housing with embedded magnet
  • Attachment: Safety cord with clip

🏃 Applications

  • Treadmill safety key replacement
  • Home treadmills using center-lock magnetic systems
  • Compatible with select models requiring both physical alignment and magnetic activation

⚙️ How It Works

  1. Align Center Lock Insert
    The center key helps position the safety key correctly in the console opening.
  2. Magnet Engages Switch
    The embedded magnet activates the treadmill safety circuit.
  3. Attach Clip to Clothing
    Secure the lanyard to your shirt or waistband.
  4. Emergency Stop Activation
    If pulled away, the treadmill immediately shuts off.

✅ Compatibility Notes

  • Designed for treadmills using:
    • 32mm outer round safety keys
    • Centered alignment insert
    • 9mm magnetic contact
  • Best for consoles with flat or lightly recessed safety key areas
  • Measure your original key before ordering to confirm fit

💡 Why This Design Matters

Unlike standard flat magnetic keys, this style combines:

  • Physical alignment for more secure placement
  • Magnetic activation for reliable operation
  • Reduced chance of accidental misalignment or poor contact
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