Kubota V2403 engine crankshaft forged cast iron excavator parts 1G851-23017 1G85123017

Specification

Description

This crankshaft, model 1G851-23017 (1G85123017), is a core replacement part designed for the Kubota V2403 engine, specifically engineered for excavator applications. Manufactured from forged cast iron via precision machining and heat treatment, it maintains micron-level dimensional accuracy and roundness tolerance on main and rod journals, ensuring perfect fit with engine mounting specifications for heavy-duty construction machinery environments.

Advantage

High-Strength Forged Material: Built with forged cast iron, this crankshaft offers over 30% higher tensile strength than standard cast iron alternatives, delivering superior fatigue resistance and impact toughness. It withstands continuous high-torque loads without cracking or fracturing under prolonged use.
Precision Machining: Journal surfaces are induction-hardened for enhanced hardness and wear resistance, significantly reducing bearing wear and extending engine overhaul intervals. Smooth, burr-free oil passages ensure unobstructed lubrication, minimizing the risk of dry friction.
OEM-Level Compatibility: Manufactured to strict original equipment specifications, including journal diameters, crank throw spacing, and spline end dimensions. It installs directly without modification, eliminating compatibility-related engine failures.
Construction-Grade Design: Optimized for the heavy load and vibration conditions of excavators, counterweights are dynamically balanced to minimize operational vibration, reducing engine noise and improving overall machine stability.

Performance

Efficient Power Transmission: Low journal surface roughness, paired with precision bearings, reduces frictional losses to maintain stable engine power output, preventing performance degradation over time.
Durability & Reliability: Heat treatment balances high strength and ductility, allowing continuous operation at rated engine power. It maintains consistent performance even under high-temperature, high-load conditions, with a service life comparable to OEM parts.
Easy Maintenance: Standardized dimensions ensure compatibility with common service tools, simplifying installation and replacement. No special modifications are required, reducing equipment downtime and improving job site efficiency.

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