Hollow Pins

Hollow pins achieve lightweighting, functional integration, and cost optimization through structural innovation. They offer irreplaceable advantages in applications requiring weight reduction, multi-operating-condition adaptation, or fluid transmission, making them a preferred solution for modern precision machinery design. They are widely used in electric vehicles, construction machinery, and household appliances.

Hollow pins Key Advantages

1. Lightweight Design & Material Excellence

• 30–50% Lighter than solid pins — perfect for weight-sensitive applications in aerospace and automotive industries.
• Superior Strength-to-Weight Ratio: Optimized wall thickness (0.5–3mm) ensures ≤15% shear strength loss compared to solid pins.
• Broad Material Selection: From high-strength alloy steel (30CrMnTi), corrosion-resistant stainless steel (304/316), to high-performance titanium alloy (TC4).

2. Enhanced Mechanical Properties

• 20–40% Higher Bending Resistance due to increased sectional inertia — perfect for high-stress applications.
• Controlled Energy Absorption: Designed to deform predictably under impact, enhancing safety in structural and crash-loaded systems.
• Reduced Thermal Distortion: Ideal for high-temperature environments like braking systems and turbine machinery.

3.Multifunctional & Application-Adaptive

Integrated Fluid/Cable Passages:

• Function as hydraulic channels (handling up to 50 MPa) or protective conduits for wiring in robotics and machinery.
• Simplify design and reduce part count in complex systems.

Vibration Damping:

• Optional internal damping materials (rubber/polyurethane) reduce vibration transmission by 15–30%.

4. Manufacturing & Assembly Advantages

Cost-Efficient Production:

• Cold heading/forging processes reduce costs by 5–10% versus solid pins.

Easy Installation:

• Internal bore allows for precision alignment during press-fitting (coaxiality ≤0.02mm).
• Available with internal threads (M3–M12) for tool-free installation and maintenance.

5. Lifecycle Value & Sustainability

• Material Savings: Use 30–60% less raw material — significantly reducing cost for expensive alloys.
• Reusability & Repair: Worn pins can be refurbished via sleeving or bore expansion, slashing maintenance costs by 40%.

Hollow Pins Technical Specifications