High Quality 6CT Engine Crankshaft Main Bearing Standard Set 3945917

Keywords: 3945917 main bearing standard set, 6CT crankshaft main bearing kit STD, diesel engine main bearing shell, excavator engine spare parts, construction machinery main bearing, aftermarket replacement bearing set

Product Overview

Main Bearing Set Part No.3945917 is standard‑size complete crankshaft main bearing kit for 6CT diesel engine, widely used on excavators and heavy‑duty construction machinery. It bears heavy radial load of crankshaft during engine running, builds stable lubricating oil film and reduces friction loss between crankshaft and cylinder block. This replacement bearing set fixes common engine problems such as abnormal knocking noise, metal rattling, low oil pressure and bearing burnout caused by original bearing wear, surface scratch and alloy layer peeling. Each main bearing set passes strict material test and dimensional tolerance inspection before delivery.

Detailed Specifications

Key Features & Advantages

• ✅ High‑quality bimetallic alloy material, excellent load‑bearing and anti‑friction performance under heavy‑duty working conditions.
• ✅ High‑precision STD standard machining, perfect fitting tolerance to maintain stable lubricating oil film.
• ✅ Outstanding wear‑resistance and anti‑spalling performance, effectively avoid crankshaft journal scratch damage.
• ✅ Reliable surface treatment, prolong service life of crankshaft and matched engine components.
• ✅ Direct replacement installation, perfectly fit for 6CT engine overhaul and maintenance projects.
• ✅ Effectively resolve abnormal knocking and low oil pressure faults caused by damaged original bearings.

Application Scope

Fit Equipment: Excavators and heavy‑duty machinery equipped with 6CT diesel engine ‑ Widely applied for engine repair workshops and routine equipment maintenance projects.

Our Company Advantage

We are professional supplier of full‑range construction machinery spare parts, supplying engine parts, hydraulic parts, electrical parts, seal kits and complete overhaul kits. ‑ Large ready stock for various machinery spare parts ‑ Factory‑direct wholesale competitive price ‑ Mixed‑order & one‑stop spare‑parts procurement supported ‑ Professional part‑number matching technical support service

Packaging & Shipping

Neutral export carton box with shock‑proof inner packing, avoid scratch and collision during long‑distance transportation ‑ Multiple shipping options: sea freight, air freight, international express for small trial orders ‑ Export documents such as Commercial Invoice, Packing List can be provided.

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.