Main Bearing 6127‑29‑8071 Main Metal Assy for Komatsu Engine S6D155‑4 SA6D155‑4

Keywords: 6127‑29‑8071 main bearing, S6D155‑4 main metal set, Komatsu SA6D155‑4 crankshaft main bearing, diesel engine main bearing shell, construction machinery engine spare parts, aftermarket main metal assembly

🔹Product Overview

Main Bearing Part No.6127‑29‑8071 is crankshaft main bearing assembly for Komatsu S6D155‑4 and SA6D155‑4 diesel engine. It installs between engine block and crankshaft main journal, undertaking heavy radial load, reducing rotational friction and maintaining stable lubricating oil film for crankshaft. This replacement main bearing kit solves typical engine faults such as heavy knocking noise, low engine oil pressure, crankshaft journal scratch, alloy layer peeling and main‑bearing burning damage caused by original bearing wear, fatigue and poor lubrication. Strict dimensional tolerance guarantees good fitting performance during engine overhaul.

🔹Detailed Specifications

🔹Key Features & Advantages

✅ Premium bimetallic alloy material, outstanding heavy‑load resistance and wear‑resisting property, fits severe engineering working conditions.

✅ Precision machining dimension, smooth surface, stable oil‑film forming capability to avoid dry friction.

✅ Anti‑fatigue alloy layer, resisting peeling and burning under long‑time high‑load operation.

✅ Interchangeable with original spare parts, easy assembly for engine overhaul service.

✅ Each set passes strict dimensional checking, lowering assembly failure risk.

✅ Critical overhaul spare part for Komatsu S6D155‑4 / SA6D155‑4 diesel engine maintenance.

🔹Application Scope ‑

Fit Equipment: Komatsu S6D155‑4, SA6D155‑4 diesel engine, widely applied on bulldozers, excavators and generator sets. ‑ Widely used for engine overhaul workshops, equipment refurbishment and fault repair projects.

🔹Our Company Advantage

We are professional supplier of full‑range construction machinery spare parts, supplying hydraulic parts, engine 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 with foam inner protection to avoid damage 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.