Screw Pin

Screw pins Product Overview

Screw pins significantly outperform straight pins in dynamic load capacity, vibration resistance, wear durability, and assembly efficiency. They are specifically designed for high-precision, high-fatigue industrial scenarios, making them the ideal choice for premium mechanical transmission systems. Widely used in electric vehicles, construction machinery, and home appliances.

Screw pins Key Advantages

1. Structural Design Excellence

Spiral Groove Optimizes Stress Distribution:

• Helical geometry disperses contact stress, reducing stress concentration and enhancing fatigue resistance (30–50% longer fatigue life).
• Helix lead design improves shear resistance, ideal for high-impact and high-vibration applications (e.g., engine connecting rods, hydraulic systems).

Self-Lubrication & Oil Retention:

• Spiral grooves retain lubricant, reducing dry friction — perfect for high-speed or lubrication-limited environments (e.g., automatic transmissions, aerospace components).

2. Superior Dynamic Performance

Vibration & Shock Absorption:

• Helical structure dampens high-frequency vibrations (40–60% better damping), reducing system noise (3–5 dB lower).
• Ideal for heavy-duty, high-vibration applications like construction machinery and wind turbine gearboxes.

Resistance to Fretting Wear:

• Helical motion minimizes micro-slip friction, reducing wear rates (20–30% less wear than straight pins).

3. Ease of Assembly & Maintenance

Simplified Installation:

• Helical guide design reduces assembly stress and allows for angular misalignment (up to ±5°), suitable for complex spatial layouts.
• Controllable preload reduces installation damage risks (15–25% lower torque requirement).

Anti-Loosening Performance:

• Helical structure provides self-locking behavior, minimizing axial movement (displacement ≤ 0.1mm) — ideal for high-speed rotating parts.

4. Material & Process Adaptability

Compatible with Multiple Surface Treatments:

• Supports case hardening (hardness HRC 58–62), nitriding, and coatings (e.g., DLC) for enhanced wear resistance.
• Precision grinding or cold rolling ensures dimensional stability (tolerance ±0.005mm).

Screw Pins Technical Specifications