3TNE84 Main Bearing STD – Yanmar Engine Parts for Excavator, Forklift, Loader

Product Details

Product Overview

This is a high-quality Main Bearing (Standard Size) specifically designed for the Yanmar 3TNE84 diesel engine. As a critical component of the engine’s rotating assembly, this main bearing ensures precise crankshaft support and reduces friction for optimal engine performance and longevity.

Engineered to OEM specifications, this bearing is a direct replacement part commonly used in a variety of heavy equipment applications, including excavators, forklifts, bulldozers, loaders, and trucks. It is manufactured under strict quality controls to provide reliable service in demanding working conditions.

Please verify your engine model (3TNE84) and part specifications before ordering to ensure correct fitment. This part is supplied in standard (STD) size for engines requiring no undersize correction.

Key Features & Benefits

• Precision Engineered Fit: Manufactured to OEM dimensions for the Yanmar 3TNE84 engine, ensuring a precise, snug fit that eliminates installation guesswork and reduces the risk of oil clearance issues.
• Superior Wear Resistance: Constructed from high-grade materials with advanced surface treatment to withstand high loads and resist premature wear, extending the service life of your engine overhaul.
• Enhanced Oil Film Retention: The bearing’s surface finish is optimized to maintain a stable oil film, reducing friction heat and preventing metal-to-metal contact during high-speed operation.
• Cost-Effective Solution: Provides a reliable alternative to expensive OEM parts without compromising on quality, offering the best value for your engine rebuild or repair project.
• Rigorous Quality Control: Each bearing undergoes dimensional and material inspections to meet international standards, ensuring consistent performance across every unit.
• Standard (STD) Size: Ideal for engines with original crankshaft journals that do not require grinding. Simplifies ordering and inventory management for workshops.

Technical Specifications

OEM Cross-Reference

This main bearing is designed as a direct replacement for the following Yanmar OEM part numbers. Please confirm your original part number for compatibility:

• Yanmar OEM: 119490-35110, 119490-35120
• Alternative Reference: 3TNE84-MB-STD

Note: While we strive for accuracy, cross-reference information is provided as a guide. Always verify physical dimensions and markings against your original part.

Compatibility

This main bearing is specifically engineered for the Yanmar 3TNE84 diesel engine. It is commonly used for the following equipment and applications:

• Engine Models: Yanmar 3TNE84, 3TNE84-A, 3TNE84-B
• Equipment Types: Excavators, Forklifts (e.g., Nissan, TCM, Komatsu models using Yanmar engines), Bulldozers, Loaders, Buses, and Trucks.

Fitment is inferred based on the engine model. Please confirm your specific equipment’s engine model before purchase.

Global Supply & Distribution

We maintain a robust global supply chain to ensure fast and reliable delivery to international buyers. Our export capabilities include:

• Worldwide Shipping: We ship to North America, Europe, Southeast Asia, the Middle East, Africa, and Oceania via major carriers (DHL, FedEx, UPS, Sea Freight).
• Major Ports Served: Direct delivery to ports like Los Angeles, Rotterdam, Singapore, Dubai, and Shanghai with efficient customs clearance support.
• Fast Turnaround: Orders are processed within 24 hours. Express shipping options available for urgent breakdowns.
• Trade Compliance: Experienced in international export documentation and customs regulations to ensure smooth transactions.

Quality Assurance

We prioritize quality to meet the demands of professional workshops and equipment owners:

• Manufacturing Standards: Produced in ISO-certified facilities with strict adherence to OEM dimensional tolerances.
• Testing: Each batch undergoes random hardness, thickness, and surface finish tests. Machinery Test Reports and Video Outgoing Inspections are available upon request.
• Warranty: Backed by a 6-month warranty against manufacturing defects. We stand by the reliability of our parts.

FAQ

Q: How do I confirm this main bearing fits my engine?
A: First, verify your engine model is a Yanmar 3TNE84. Then, check the crankshaft journal diameter to ensure it is still within standard size limits (no grinding). If in doubt, remove one of your old bearings and compare the width and curvature. Our technical support can provide dimensional data upon request.

Q: Can I install this bearing without special tools?
A: While installation is possible with basic hand tools, we recommend using a torque wrench and plastigauge to check oil clearances. The bearing shells must be clean and dry during installation. For optimal results, have a qualified diesel mechanic perform the installation to prevent misalignment or damage.

Q: What is the difference between STD and undersize bearings?
A: STD (Standard) bearings are for original, unworn crankshaft journals. If your crankshaft has been ground down to repair damage, you will need undersize bearings (e.g., 0.25mm or 0.50mm). This part is specifically STD and will not fit a reground crankshaft.