Komatsu camshaft 6745411110 6745-41-1110 3966430 3966431 China manufacturer supplier Komatsu 6D114 engine parts PC350LC-8 PC390LC-10 excavator components

◆ Product Overview
A precision-engineered, heavy-duty camshaft designed for the powerful Komatsu 6D114 series diesel engines. This critical component from a certified China manufacturer serves as a direct replacement for OEM part numbers 6745-41-1110 (6745411110), 3966430, and 3966431. Specifically engineered for the extreme-duty cycles of large hydraulic excavators, it restores precise valve timing and engine performance for overhauls and rebuilds in Komatsu PC350LC-8, PC390LC-10, PC360LC-10, and PC300LC-8 models, ensuring maximum power and durability in mining and heavy construction applications.

◆ Manufacturer Information
✓ Manufacturer Type: China Heavy Mining & Construction Engine Parts Specialist
✓ Certification: ISO 9001:2015, IATF 16949 Certified
✓ Specialization: Komatsu 6D Series Engine Components
✓ Supply Model: Factory Direct to Global Mining & Heavy Construction Markets

◆ Part Number & Application
✓ OEM Part Numbers: 6745-41-1110 / 6745411110, 3966430, 3966431
✓ Engine Model: Komatsu 6D114 Diesel Engine
✓ Host Equipment: Komatsu Excavator Models PC350LC-8, PC390LC-10, PC360LC-10, PC300LC-8
✓ Application: Major Engine Overhaul, Rebuild, and Critical Repair

◆ Product Specifications
✓ Product Type: Heavy-Duty Engine Camshaft
✓ Condition: 100% New, Factory Direct Quality
✓ Manufacturer Origin: China Precision CNC Manufacturing
✓ OEM Reference: Direct Replacement for Komatsu 6D114 Specifications
✓ Key Feature: Precision-ground to meet the specific high-torque, high-power demands of large excavator operation

◆ Manufacturing Advantages
✓ Large Excavator Engine Focus: Specialized expertise in the Komatsu 6D114 engine platform used in 30-40 tonne class excavators like the PC350LC-8 and PC390LC-10.
✓ Advanced Cam Grinding Technology: Utilizes state-of-the-art CNC grinding to replicate exact OEM lobe profiles for optimal valve timing, power delivery, and fuel efficiency under extreme loads.
✓ Material & Heat Treatment Excellence: Manufactured from high-grade alloy steel with precise induction hardening on lobes and journals for exceptional wear resistance in high-hour, high-shock mining applications.
✓ Rigorous Quality Control: 100% inspection of critical dimensions, including lobe profiles, journal diameters, and camshaft straightness, ensures perfect engine timing and fitment.
✓ Mining-Duty Validation: Products are validated against the rigorous 24/7 duty cycles of large excavators in quarry and mining operations.

◆ Quality Assurance Process
✓ Material certification from suppliers of premium camshaft-grade steel.
✓ Full-profile inspection using optical comparators and CMM against Komatsu master specifications.
✓ Hardness testing to verify proper heat treatment depth and value on all lobes and bearing journals.
✓ Surface finish and micro-geometry analysis for optimal oil film retention under dynamic conditions.
✓ Comprehensive straightness and run-out verification to prevent engine vibration and premature wear.

◆ Supply Chain Management
✓ Production Capacity: Dedicated high-capacity line for large excavator engine components.
✓ Lead Time: 50-60 days for precision grinding, hardening, and validation processes.
✓ Minimum Order: Competitive MOQ for mining and heavy construction machinery distributors.
✓ Packaging: Custom heavy-duty protective packaging with VCI (Vapor Corrosion Inhibitor) for international shipping to remote sites.
✓ Logistics: Specialized global freight capable of delivery to major mining regions and construction hubs worldwide.

◆ Technical Support Services
✓ Detailed application guide for PC300LC-8, PC350LC-8, PC360LC-10, PC390LC-10 excavator compatibility.
✓ Installation guidelines including timing procedure and bearing clearance specifications.

◆ Market Applications
✓ Mining & Large Excavator Service Centers: Essential for overhauling engines in high-utilization Komatsu 300-390 series excavators.
✓ Heavy Civil Construction & Quarrying: Critical component for contractors on large infrastructure and aggregate production projects.
✓ Global Komatsu Mining Parts Distributors: High-value inventory for the large excavator aftermarket.