Product Introduction

• Structure: A high-performance bi-metal bushing, with a steel outer shell for structural rigidity and a leaded bronze inner layer for excellent wear resistance and lubricity. It features a precision-machined oil hole to ensure a continuous supply of lubricating oil to the piston pin.

• Performance: The bi-metal construction provides high load-bearing capacity and low friction, reducing wear on both the bushing and the piston pin. The oil hole ensures effective lubrication, preventing overheating and extending service life even under extreme engine loads.

Core Function

1. Friction Reduction: Provides a low-friction surface between the piston pin and connecting rod, reducing mechanical wear and energy loss.

2. Load Distribution: Distributes the combustion forces from the piston pin evenly across the connecting rod, preventing localized stress and damage.

3. Lubrication Delivery: The oil hole channels pressurized engine oil to the friction surface, ensuring continuous lubrication and cooling.

Connecting Rod Bushing 630-1004052 YUCHAI – Premium Engine Component for Heavy-Duty Performance

Every revolution of your engine depends on precision-engineered components working in silent harmony. The Connecting Rod Bushing 630-1004052 YUCHAI serves as the critical bearing interface between the connecting rod and piston pin, reducing friction, absorbing shock loads, and extending engine service life under the most demanding operating conditions. Sourced directly from METTLEAD Truck Parts with strict OEM-grade quality control, this bushing delivers the dimensional accuracy and material integrity that fleet managers and procurement professionals demand.

Why This Connecting Rod Bushing Matters to Your Engine

The connecting rod bushing isn’t just a small copper sleeve — it’s the guardian of your engine’s reciprocating assembly. When this component fails, the consequences cascade: excessive piston pin play, knocking noise, oil pressure drop, and ultimately catastrophic rod bearing failure. The 630-1004052 YUCHAI connecting rod bushing is engineered to prevent exactly that.

Key Functions and Benefits

• Friction Reduction: Precision-machined inner and outer diameters create an optimal oil film clearance, reducing metal-to-metal contact by up to 95% during high-RPM operation.
• Load Distribution: Distributes dynamic piston forces evenly across the connecting rod small end, preventing localized stress concentration and fatigue cracking.
• Thermal Stability: High-tin bronze alloy composition maintains dimensional stability across operating temperatures from -30°C to +180°C.
• Extended Service Life: Engineered for 300,000+ km service intervals under standard operating conditions, matching OEM replacement schedules.
• Perfect Interference Fit: Outer diameter manufactured to H7 tolerance grade ensures secure press-fit installation without migration or spin-out.
• Corrosion Resistance: Bronze-based material resists acidic degradation from combustion byproducts in engine oil.

Technical Specifications – Connecting Rod Bushing 630-1004052

Application Scenarios – Where This Bushing Works Hardest

The Connecting Rod Bushing 630-1004052 YUCHAI finds its home in a wide range of heavy-duty and medium-duty applications powered by YUCHAI diesel engines. Here’s where it proves its worth every single day:

On-Highway Trucks

Long-haul cargo trucks equipped with YUCHAI YC6108 engines rely on this bushing to maintain quiet, vibration-free operation across hundreds of thousands of kilometers. When your fleet runs 18 hours a day on African trunk roads or Southeast Asian highways, this bushing absorbs the punishment so your pistons don’t.

Construction and Mining Equipment

Wheel loaders, excavators, and dump trucks operating in high-dust, high-vibration environments place extreme cyclic loads on the connecting rod assembly. The 630-1004052 bushing’s superior fatigue resistance keeps these machines running through shift after shift.

Agricultural Machinery

Tractors and harvesters powered by YUCHAI engines operate under variable load conditions — from idle to full torque in seconds. This bushing accommodates rapid load transitions without material degradation.

Generator Sets and Stationary Power

Continuous-duty generator sets demand components that perform reliably at sustained RPM for thousands of hours. The consistent oil film characteristics of this bushing make it ideal for power generation applications.

OEM/ODM Capability – Your Brand, Our Quality

METTLEAD Truck Parts doesn’t just supply parts — we build partnerships. Our manufacturing and sourcing capabilities are designed to serve distributors, importers, and fleet operators who need more than a box on a shelf.

• White-Label Packaging: Your brand identity on our quality product. Custom packaging design, printing, and labeling services available for orders of 500+ pieces.
• Custom Specifications: Need a modified material composition or dimensional variation for specific engine overhaul requirements? Our engineering team can accommodate custom requests.
• Strict Quality Control: Every batch undergoes 100% dimensional inspection, hardness testing, and surface roughness measurement. Certificates of conformance provided on request.
• Factory-Direct Pricing: By eliminating middlemen in the supply chain, we deliver 20–35% cost savings compared to traditional import channels while maintaining OEM-equivalent quality.
• Flexible MOQ: Whether you need 50 pieces for trial or 10,000 pieces for annual supply contracts, we structure orders to match your inventory strategy.

Customer Case Study – Solving Bushing Procurement Challenges

In Q3 2024, a fleet maintenance company managing 200+ YUCHAI-powered trucks in Nigeria faced recurring premature failure of connecting rod bushings sourced from local aftermarket suppliers. The bushings were lasting only 80,000–120,000 km before developing excessive play, causing piston pin knock and unplanned downtime costing approximately $1,200 per incident.

After switching to the Connecting Rod Bushing 630-1004052 YUCHAI supplied by METTLEAD, the client reported the following results over a 6-month evaluation period:

• Zero premature bushing failures across 47 engine overhauls
• Average service life extended beyond 280,000 km (still running at evaluation close)
• Per-unit cost reduced by 28% compared to their previous Hong Kong-based supplier
• Lead time reduced from 35 days to 18 days via direct container shipping

The procurement manager noted: “The dimensional consistency of METTLEAD’s 630-1004052 bushings eliminated our installation issues completely. Every piece presses in clean with the correct interference. We’ve standardized on this source for all YUCHAI engine bushings.”

Frequently Asked Questions – Connecting Rod Bushing 630-1004052 YUCHAI

What is the exact function of the connecting rod bushing 630-1004052 in a YUCHAI engine?

The 630-1004052 bushing acts as a sacrificial wear surface between the piston pin and the connecting rod small end bore. It maintains precise oil clearance (typically 0.02–0.05mm) to allow hydrodynamic lubrication while preventing direct steel-on-steel contact that would destroy the connecting rod.

How do I verify that the connecting rod bushing 630-1004052 fits my YUCHAI engine model?

This bushing is designed for YUCHAI YC6108 and YC6105 series engines. Confirm fitment by matching the OEM part number 630-1004052 in your engine’s parts catalog, or provide your engine nameplate data to our technical team for cross-reference verification.

What causes premature failure of a connecting rod bushing?

Common causes include: insufficient oil supply to the small end (blocked oil gallery in the rod), incorrect interference fit during installation (undersized or oversized bushing OD), contaminated engine oil carrying abrasive particles, and operating the engine under sustained overload conditions exceeding design parameters.

Can I install the connecting rod bushing 630-1004052 without specialized tooling?

A proper hydraulic press or dedicated bushing installation tool is strongly recommended. The interference fit requires controlled, uniform force to press the bushing squarely into the rod bore. Hammer installation risks cocking the bushing, damaging the bore, or cracking the bushing material.

What is the recommended oil clearance after installing this bushing?

After installation, the bushing inner bore should be finish-honed or reamed to achieve a piston pin clearance of 0.025–0.045mm at 20°C ambient temperature. This clearance allows full hydrodynamic film formation while preventing excessive pin float at operating temperature.

Does METTLEAD supply other YUCHAI engine components alongside this bushing?

Yes. We maintain a comprehensive inventory of YUCHAI engine parts including piston rings, cylinder liners, main bearings, crankshaft seals, valve guides, and complete gasket sets. Consolidating your order reduces shipping cost per piece significantly.

Secure Your Supply – Request a Quotation Today

Downtime costs more than parts ever will. Whether you need 100 pieces of the Connecting Rod Bushing 630-1004052 YUCHAI for immediate stock replenishment or want to negotiate an annual supply agreement with fixed pricing, METTLEAD’s team responds to inquiries within 12 business hours with full pricing, lead time, and shipping options.

• Factory-direct pricing with no hidden fees
• Flexible payment terms including T/T, L/C, and Trade Assurance
• Global shipping via sea, air, or express courier
• Facility visits welcomed — see our quality process firsthand

Contact us now
with your required quantity and delivery destination. Let’s build a supply chain that keeps your engines running and your costs predictable.

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