3D78 3TNC78 Main Bearing and Connecting Rod Bearing Set for Yanmar Diesel Engine Excavator Parts

Product Details

Product Overview

This product listing offers a high-quality set of main bearings and connecting rod bearings specifically designed for the Yanmar 3D78 and 3TNC78 diesel engine models. These precision components are critical for maintaining the correct crankshaft clearance and ensuring smooth, reliable engine operation. As a direct replacement for OEM specifications, this bearing set is commonly used in various heavy machinery applications, including excavators, forklifts, and loaders, where engine durability is paramount.

Manufactured in China by the trusted brand, these bearings are produced to strict OEM size standards, guaranteeing a proper fit for your engine rebuild or repair project. Whether you are servicing a compact excavator or a material handling forklift, this bearing kit provides the essential internal engine support needed to restore performance and extend engine life.

Key Features & Benefits

• OEM Standard Fitment: Manufactured to the exact OEM size specifications for the Yanmar 3D78 and 3TNC78 engines, ensuring precise clearance and reliable installation without the need for modifications.
• Complete Bearing Set: Includes both main bearings and connecting rod bearings in one convenient kit, saving time on sourcing individual components for your engine overhaul.
• Durable Construction: Engineered from high-grade materials to withstand the high pressures and temperatures of diesel engine operation, reducing wear and extending service intervals.
• Rigorous Quality Control: Each batch undergoes a machinery test report and outgoing video inspection to verify dimensional accuracy and surface finish, providing confidence in part quality.
• Cost-Effective Solution: Offers a competitive price advantage without compromising on the essential performance required for heavy-duty applications like excavators, trucks, and bulldozers.
• Reliable Performance: Designed to reduce friction and support the rotating assembly, helping to prevent engine knocking and premature failure in demanding work environments.

Technical Specifications

OEM Cross-Reference

This bearing set is designed as a direct replacement for the original Yanmar bearings found in the 3D78 and 3TNC78 engine series. While specific OEM part numbers may vary by engine serial number, this set is engineered to match the standard factory specifications for these models. Please verify your engine model (3D78 or 3TNC78) to ensure compatibility.

• Compatible Engine Series: Yanmar 3D78, Yanmar 3TNC78
• Reference Application: Direct replacement for standard OEM main and rod bearings used in these Yanmar industrial diesel engines.

Compatibility

This bearing set is specifically machined for the Yanmar 3D78 and 3TNC78 diesel engine platforms. These engines are commonly used for powering a variety of industrial and construction equipment.

• Engine Models: Yanmar 3D78, Yanmar 3TNC78
• Common Applications: Excavators, Forklifts, Bulldozers, Loaders, Trucks, Buses, and other industrial machinery.
• Note: Fitment is inferred based on the engine model. We recommend cross-referencing your existing part with your engine’s service manual to confirm compatibility.

Global Supply & Distribution

We offer worldwide shipping for this bearing set, ensuring fast and reliable delivery to major industrial centers across the globe. Our logistics network supports efficient export to key markets including North America, Europe, Asia-Pacific, the Middle East, and South America.

We have extensive experience in international trade and can handle bulk orders for engine rebuilders, workshops, and parts distributors. Products are shipped from our warehouses in Guangdong and Guizhou, China, with direct connections to major ports like Shenzhen and Guangzhou for rapid ocean and air freight.

Quality Assurance

Each bearing set is manufactured under strict quality control standards to ensure durability and precision. Our commitment to quality is backed by a 6-month warranty against manufacturing defects.

• Testing: Every production batch is subject to a machinery test report to verify dimensional accuracy. A video inspection of outgoing goods is provided to ensure the product meets specifications before shipping.
• Standards: Components are produced to meet OEM size tolerances, ensuring a proper fit and reliable performance in your Yanmar diesel engine.
• Support: Our team is available to provide technical documentation and support to ensure you receive the correct part for your application.

FAQ

Q: How can I confirm these bearings will fit my engine?
A: Please verify your engine model number stamped on the engine block. This set is designed specifically for the Yanmar 3D78 and 3TNC78 diesel engines. If you have a different engine model, this kit will not be compatible. We recommend comparing the bearings to your original parts for confirmation of size and thickness.

Q: What is included in this bearing kit?
A: This kit includes a complete set of main bearings and connecting rod bearings required for a standard engine rebuild on the 3D78/3TNC78 engine. It does not include other engine gaskets, seals, or fasteners, which should be replaced separately during an overhaul.

Q: What is the warranty procedure if the bearings are defective?
A: This product comes with a 6-month warranty against manufacturing defects. If you encounter an issue, please contact us with your order number and a description of the problem. We may request photos or a video of the defect to process a replacement or refund promptly.