Stone crankshaft 250×400

Heavy-Duty Stone Crusher Crankshaft 250×400 – Engineered for Unmatched Power & Precision

Direct Replacement & Performance Upgrade Crankshaft for 250×400 Jaw Crushers. This premium forged steel crankshaft is the core power transmission component, meticulously engineered to convert rotary motion into the aggressive crushing action required for granite, basalt, quartz, and other hard rock/ore.

Core Product Features & Technical Specifications:

• Precise Model Fitment: Engineered as an exact OEM replacement for 250×400 mm jaw crusher models. Ensures seamless integration and reliable performance.

• Superior Material & Forging: Manufactured from high-alloy, heat-treated forged steel (42CrMo/4140 equivalent) for exceptional tensile strength, fatigue resistance, and durability under extreme cyclical loads.

• Critical Dimensions: Standard 250×400 jaw crusher specification. Main journal and crankpin diameters are precision-machined to exact OEM tolerances for perfect bearing fit and alignment.

• Precision Machining: Ultra-finished bearing surfaces and optimal counterweight balancing minimize vibration, reduce wear on crusher bearings, and ensure smooth, energy-efficient operation.

• Rugged Construction: Designed to withstand the high shock loads and stresses generated during the primary crushing process, maximizing component service life.

• Surface Treatment: Treated with phosphating or nitride hardening to enhance surface hardness, improve wear resistance, and provide superior corrosion protection.

Key Benefits for Your Operation:

• Maximize Uptime & Reduce Failures: Robust construction and premium materials prevent unexpected breakdowns, extending maintenance intervals and improving crusher availability.

• Maintain Crushing Efficiency: Precision geometry ensures the correct stroke and crushing kinematics, preserving optimal crusher throughput and product size distribution.

• Protect Your Investment: Acts as the reliable heart of your crusher, safeguarding other critical components like bearings, flywheels, and the main frame from damage due to imbalance or failure.

• Engineered for Long Service Life: Superior wear and fatigue resistance translate to a longer total lifespan, reducing total cost of ownership and frequency of replacement.

Primary Applications:

• Replacement Part: Direct replacement for worn, damaged, or broken crankshafts in 250×400 jaw stone crushers.

• Overhaul & Repair Kits: Essential component for crusher rebuilds and comprehensive maintenance overhauls.

• Heavy-Duty Crushing: Ideal for continuous operation in quarries, mining sites, and aggregate production plants processing abrasive materials.