Main Bearing 3801260 For NT855/QSN Engine

Keywords: 3801260 main bearing, NT855 QSN engine main bearing set, diesel engine crankshaft main bearing, excavator engine bearing, construction machinery spare parts, aftermarket replacement main bearing

🔹Product Overview

Main Bearing Part No.3801260 is a critical crankshaft support component designed for cumm-ins NT855 / QSN diesel engines widely fitted on excavators and heavy‑duty construction machines. It bears the rotational load of crankshaft, reduces friction between crankshaft and engine block, and maintains stable crankshaft operation. This replacement bearing solves common failures including abnormal engine knocking, crankshaft wear, oil pressure drop and metal noise caused by original bearing abrasion, alloy layer peeling and overheating damage. Every main bearing set is strictly inspected for material, dimension and surface finish before delivery.

🔹Detailed Specifications

🔹Key Features & Advantages

• ✅ High‑quality bimetallic alloy material, outstanding load‑bearing capacity and anti‑friction performance for heavy‑load working conditions.
• ✅ Precise dimensional machining, perfect fit with crankshaft and engine block, guarantee stable oil film.
• ✅ Effectively resolve engine abnormal knocking, low oil pressure and crankshaft abrasion issues caused by worn original main bearing.
• ✅ Good anti‑fatigue property, resist high‑temperature impact during long‑time continuous engine operation.
• ✅ Ideal replacement part for NT855 / QSN engine overhaul and maintenance projects.

🔹Application Scope

Specially used for cumm-ins NT855, QSN series diesel engines applied to various excavators and heavy construction equipment.

🔹Our Company Advantage

We supply wide range of excavator and diesel engine spare parts. Strict quality inspection before shipment, stable supply, fast delivery, support small‑batch trial order and bulk wholesale.

🔹Packaging & Shipping

Neutral export carton packaging or customize packing according to your requirement. Goods can be shipped by sea, air or international express.

🔹Contact Us

If you need more excavator spare parts or other construction machinery replacement components, please send your parts list to us. We will offer our best quotation for you quickly.