Pivot Pins for Rotational Locking and Adjustment in Modular Systems

When designing modular systems, rotational locking, and adjustable components, precise control over motion and positioning is essential. One of the simplest yet most effective solutions is the Pivot Pin—a mechanical fastener that allows controlled rotation while ensuring secure locking when needed.

At Dongguan Sango Hardware Fasteners Co., Ltd., we specialize in manufacturing high-quality pivot pins that cater to industrial machinery, automated equipment, robotics, and modular systems requiring rotational locking or adjustable positions.

1. What Is a Pivot Pin?

A Pivot Pin is a cylindrical fastener designed to allow rotation in one direction or multiple axes while also providing a locking function to hold components in place when not rotating. It is commonly used in pivoting assemblies like doors, arms, and levers.

🔩 Key Features:

• Allow rotational movement with fixed pivot points
• Lockable to prevent unintended movement
• Quick assembly with minimal tooling
• Available in custom sizes and load ratings
• Versatile for use in modular designs

2. Types of Pivot Pins

🔹 Standard Pivot Pin

• Basic design, no locking mechanism
• Ideal for low-load applications and where constant rotation is required
• Used in hinges or swing arms

🔹 Locking Pivot Pin

• Features a spring-loaded detent or snap-ring to secure the pin in place
• Common in applications where positional locking is critical, such as adjustable jigs or medical equipment

🔹 Swivel Pivot Pin

• Allows rotation in multiple directions
• Used in systems requiring multidimensional motion (e.g., robotic arms, adjustable mounting systems)

🔹 Quick-Release Pivot Pin

• Features a button or lever to quickly release or lock the pin
• Ideal for frequent adjustments or tool changes in equipment and machinery

🔹 Pin with Integrated Bushing

• Has a built-in bushing to prevent wear on the pivot point
• Used in high-load or high-friction environments (e.g., heavy machinery, lifting equipment)

3. Applications of Pivot Pins

Pivot pins are crucial in systems requiring smooth rotational movement and reliable locking:

• 🧰 Adjustable arms, levers, and brackets
• ⚙️ Heavy machinery and cranes
• 🛠 Assembly jigs and positioning fixtures
• 🧲 Robot actuators and manipulators
• 📦 Packaging machines and conveyors
• 🧪 Medical devices requiring adjustable settings
• 🚗 Automotive parts (door hinges, adjustable seats)

They are used wherever adjustable positions or rotation control is needed with minimal mechanical complexity.

4. Material and Finish Options