Main Bearing Set AR12270 for KTA19 QSK19 Engine

Keywords: AR12270 main bearing set, KTA19 QSK19 crankshaft main bearing, diesel engine main bearing shell kit, excavator engine spare parts, construction machinery engine bearing, aftermarket replacement bearing set

🔹Product Overview

Main Bearing Set Part No.AR12270 is a complete crankshaft main bearing kit for KTA19, QSK19 diesel engines, widely used on excavators and heavy‑duty construction machinery. It supports crankshaft operation, bears huge radial working load, forms stable lubricating oil film and reduces friction between crankshaft and engine block. This replacement bearing set fixes common engine faults such as abnormal knocking sound, metal noise, low oil pressure and bearing burnout caused by original bearing wear, surface scratch and alloy layer shedding. Every main bearing set has gone through strict material test and dimensional inspection before shipment.

🔹Detailed Specifications

🔹Key Features & Advantages

• High‑quality bimetallic alloy material, outstanding load‑bearing and anti‑friction performance under heavy‑duty operating conditions.
• Precise dimension tolerance, good matching performance, keep stable lubricating oil film during engine running.
• Excellent surface workmanship, resist scratch and alloy peeling, prolong service life.
• Perfect fit size for direct installation, ideal for KTA19 QSK19 engine overhaul and repair.
• Effectively eliminate abnormal knocking and low oil pressure problems from damaged original bearings.

🔹Application Scope

Fit Equipment: Excavators and heavy‑duty machinery equipped with KTA19, QSK19 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.