3TN100 Main Crankshaft Bearing & Connecting Rod Bearing for Yanmar Excavator Diesel Engine Parts

Product Details

Product Overview

This product listing offers a matched set of Main Crankshaft Bearings and Connecting Rod Bearings specifically designed for the Yanmar 3TN100 diesel engine. As critical components within the engine’s rotating assembly, these bearings ensure precise lubrication, reduce friction, and maintain the correct clearance between the crankshaft, connecting rods, and the engine block. They are essential for the reliable operation and longevity of your Yanmar-powered machinery.

While primarily identified for the Yanmar 3TN100 model, these engine bearings are commonly used in a variety of heavy equipment and industrial applications, including excavators, forklifts, bulldozers, loaders, and agricultural machinery. This product is a direct replacement part manufactured to OEM size specifications, providing a dependable solution for engine overhaul or repair.

Key Features & Benefits

• Precise Fitment for Yanmar 3TN100: Manufactured to OEM size standards, ensuring a correct and secure fit for the 3TN100 engine block and crankshaft.
• Superior Load-Bearing Capacity: Designed to withstand the high dynamic loads and pressures generated within a diesel engine, reducing wear and extending service life.
• Enhanced Lubrication Properties: The bearing surface is engineered to maintain a stable oil film, minimizing metal-to-metal contact and protecting against seizure.
• Complete Set for Major Overhaul: Includes both main bearings and connecting rod bearings, providing a comprehensive solution for a full bottom-end engine rebuild.
• Cost-Effective Replacement: Offers a factory-direct price advantage, making it a budget-friendly choice for maintenance and repair without compromising on quality.
• Rigorous Quality Control: Each bearing undergoes dimensional and material inspections to guarantee consistent performance and reliability.

Technical Specifications

OEM Cross-Reference

This bearing set is a direct replacement for the following Yanmar original equipment manufacturer (OEM) part numbers. Please verify your existing part number for compatibility.

• Main Bearing: 119420-35110, 119420-35120
• Connecting Rod Bearing: 119420-35130, 119420-35140

Note: This list is based on common industry cross-references for the Yanmar 3TN100 series. Always confirm by comparing the dimensions of your original bearing with the replacement part.

Compatibility

These engine bearings are specifically designed for the Yanmar 3TN100 diesel engine. This engine platform is commonly used for powering a wide range of heavy equipment and vehicles, including:

• Construction: Mini Excavators, Bulldozers, Loaders
• Material Handling: Forklifts
• Agricultural: Tractors, Combine Harvesters
• Industrial: Generators, Pumps, Compressors
• Commercial Vehicles: Buses, Trucks

This part is not a universal fit. Its use is strictly limited to the Yanmar 3TN100 engine block and crankshaft configuration.

Global Supply & Distribution

We offer efficient worldwide shipping from our strategic locations in Guangdong and Guizhou, China. Our logistics network ensures fast and reliable delivery to all major global markets, including North America (USA, Canada, Mexico), Europe (Germany, UK, France, Italy), Asia-Pacific (Japan, South Korea, Australia), the Middle East (UAE, Saudi Arabia), and South America (Brazil, Argentina). We specialize in B2B trade and can handle large-volume orders with professional packaging to prevent damage during transit. Our export team is experienced in international trade compliance, ensuring smooth customs clearance for our partners.

Quality Assurance

Our manufacturing process adheres to strict international quality standards for engine components. Each bearing is produced using high-grade materials and precision machining to guarantee dimensional accuracy and durability. We provide a 6-month warranty against manufacturing defects. Before shipment, we offer video outgoing inspection and can provide a machinery test report upon request, giving you complete confidence in your purchase.

FAQ

Q: How do I confirm that these bearings will fit my Yanmar 3TN100 engine?
A: The best way to confirm fitment is to check the part number on your original bearing. Cross-reference it with the OEM numbers listed in our description (e.g., 119420-35110). If you cannot find a number, measure the thickness, width, and diameter of your old bearing and compare them to the specifications of this set. For standard (non-undersize) bearings, the dimensions are fixed.

Q: What is the correct installation procedure for these bearings?
A: Installation should be performed by a qualified mechanic. The key steps include: 1) Thoroughly cleaning the bearing saddles and caps. 2) Applying clean engine oil to the bearing surface. 3) Carefully aligning the bearing tang with the notch in the saddle. 4) Torquing the main bearing and connecting rod cap bolts to the manufacturer’s specified torque settings using a torque wrench. Never reuse old bolts.

Q: What is the difference between a standard size bearing and an undersize bearing?
A: A standard size bearing is used when the crankshaft journals are not worn or have been polished to their original factory diameter. An undersize bearing (e.g., 0.25mm or 0.50mm) is used after the crankshaft has been ground down to repair surface damage. This product is listed as “OEM Size,” meaning it is a standard size bearing. If your crankshaft has been ground, you will need an undersize bearing set.