KTA19 Main Bearing Oversize 020 AR12272 Diesel Machinery Engine Parts

Keywords: AR12272 main bearing, KTA19 oversize 020 main bearing, diesel engine crankshaft main bearing shell, excavator engine spare parts, construction machinery engine bearing, aftermarket replacement main bearing

Product Overview

Main Bearing Oversize 020 Part No.AR12272 is an important crankshaft supporting bearing shell for KTA19 diesel engine, widely used on excavators and heavy‑duty construction machinery. It bears the huge radial load of crankshaft during engine operation, forms stable oil film for lubrication, reduces friction loss between crankshaft and engine block. This oversize replacement main bearing is specially for crankshaft repair‑grinding overhaul, solving failures including abnormal engine knocking, metal noise, oil pressure drop and bearing burning caused by original bearing wear, scratch and alloy layer peeling. Every set of main bearing undergoes strict material inspection and dimension tolerance checking before shipment.

Detailed Specifications

Key Features & Advantages

• High‑quality bimetallic alloy material, good load‑bearing capacity and anti‑friction performance under heavy‑duty working condition.
• Strict oversize 020 dimension tolerance, perfect match for reground crankshaft after wear.
• Fine surface treatment, good oil‑film retention performance, effectively prevent dry friction and bearing burning.
• Exact fitting size, direct installation, ideal for KTA19 engine overhaul repair.
• Effectively eliminate abnormal knocking, low oil pressure and other faults caused by worn original main bearing.

Application Scope

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