We offer top quality excavators of famous brands made in China, offering a comprehensive portfolio that spans all tonnage classes, power configurations, and operating conditions—ranging from 1-ton mini-excavators to 400-ton class ultra-large mining hydraulic shovels. Equipped with proprietary, fully integrated hydraulic systems, these machines are characterized by high reliability, low fuel consumption, and intelligent capabilities; consistently holds the top domestic market share and exports to over 180 countries worldwide.
I. Core Technology: Proprietary Integrated Hydraulic System (Core Competitiveness)
independently develops a complete suite of hydraulic components—including pumps, valves, cylinders, and motors—eliminating reliance on external suppliers:
1. XAP Series Main Pump
Features a peak pressure of 40 MPa and rapid variable-displacement response; a pre-decompression structure minimizes shock loads, making it suitable for the entire 1–400 ton model range. It utilizes a dual-system architecture (electronic load-sensing and positive flow control) to distribute flow on demand, ensuring fuel efficiency during light-load operations and powerful performance under heavy loads.
2. XOV Large-Bore Multi-Way Main Valve
Features a large 36mm bore and low pressure loss, ensuring smooth, lag-free simultaneous operation of multiple functions. Built-in flow-sharing technology enables seamless coordination of digging, swinging, and traveling, while intelligent matching of striking frequency optimizes performance for hydraulic breaker applications.
3. High-Strength Hydraulic Cylinders
Utilizes piston rods with dual-layer nickel-chrome plating, high-temperature resistant seals, and self-lubricating bushings. Post-welding stress relief treatment extends service life by 30% in continuous heavy-duty mining and breaking operations.
4. PIC Feed-Forward Intelligent Electronic Control
Real-time coordination between the engine and hydraulic system boosts transient response by 90%, preventing engine stalling under heavy loads and reducing fuel consumption by 15%–19% compared to similar-tonnage models.