Description
Technical Overview & Product Details
The piston pin acts as the pivot point for the connecting rod, transmitting the immense power generated during combustion from the piston to the crankshaft. The 146673-22300 is manufactured using high-strength, case-hardened steel to ensure exceptional fatigue resistance and surface hardness, preventing deformation or shearing under heavy-duty maritime operating conditions.
- Compatible Engine Type: Yanmar marine propulsion and auxiliary engine series.
- Part Number / Designation: 146673-22300.
- Component Type: Piston Pin (Gudgeon Pin).
- Material: High-grade case-hardened alloy steel, heat-treated for maximum surface hardness and core toughness.
- Application: Piston-to-connecting rod assembly.
Key Features & Performance
- Exceptional Fatigue Strength: Engineered to endure high-frequency cyclic loading, providing a robust connection that resists bending or fatigue cracking over long service intervals.
- Precision Surface Finish: Ground to extremely tight tolerances with a mirror-like finish to minimize friction and wear within the piston boss and connecting rod small-end bushing.
- Dimensional Accuracy: Machined to exact specifications to ensure optimal clearance, which is vital for maintaining proper oil film distribution and preventing seizing or “galling” during high-load operations.
- Thermal Stability: The specialized steel composition maintains its mechanical properties even under the intense thermal stress of diesel combustion, ensuring long-term reliability.
Why Source from Heybeli Marine?
A failing piston pin can lead to catastrophic piston, liner, and connecting rod damage. Heybeli Marine protects your vessel’s performance with:
- Strict OEM Interchangeability: Our 146673-22300 pins are manufactured to meet the exact hardness and dimensional tolerances required for Yanmar engines.
- Global Strategic Logistics: We maintain a ready-to-ship inventory of these critical internal components, ensuring they reach your vessel or shipyard quickly to avoid maintenance delays.
- Quality Assurance: Every batch undergoes rigorous metallurgical testing and dimensional verification to ensure the pins meet the highest durability standards for maritime use.
- Complete Overhaul Support: We provide these pins alongside pistons, connecting rods, and bushings to help you conduct a professional, total engine rebuild.
Technical Maintenance Note:
When installing the 146673-22300, it is essential to inspect the piston boss and connecting rod small-end bushing for any signs of scoring, ovality, or excessive clearance. The piston pin should be cleaned thoroughly and checked for any surface imperfections before installation. In many cases, it is recommended to apply a light coat of high-quality engine assembly lubricant to the pin surface to prevent friction during initial startup. Always ensure that any circlips or retaining mechanisms are seated correctly and securely in their grooves to prevent axial migration of the pin.
