Meta Description: Explore Guchuan's range of high-performance hydraulic breakers main body. Learn about features, benefits, and find the perfect breaker for your excavator. Expertly engineered inChina sin ce 2010.​

 Hydraulic Breaker Main Body: Engineered for Reliability and Performance

Product Introduction

At Guchuan Machinery Co., Ltd., we engineer the heart of high-impact performance: the hydraulic breaker cylinder body. Specifically designed for models HB15G, HB20G, HB30G, and HB40G, our cylinder body represents a synthesis of advanced metallurgy, precision manufacturing, and robust design. And our product is the reliable choice .

Innovative Three-Cylinder Structure & Precision Engineering

The Guchuan HB-Series breaker cylinder is engineered as a cohesive unit comprising three integrated sections: the upper, middle, and lower cylinders. This segmented design is critical for managing the intense stress cycles and distributing impact forces efficiently.

The middle cylinder, the critical load-bearing core, undergoes a transformative manufacturing process:

• CNC Machining: We utilize state-of-the-art Computer Numerical Control (CNC) machining. This ensures micron-level precision in every bore and surface, guaranteeing perfect alignment, optimal seal performance, and consistent hydraulic fluid dynamics.

• Advanced Heat Treatment: Following machining, each middle cylinder is subjected to a controlled heat treatment process. This crucial step dramatically enhances the metal's internal structure, significantly boosting its wear resistance, toughness, and overall fatigue strength.

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The Science of Material Selection: 20CrMo Alloy Steel

The exceptional durability of our cylinder body starts with its material. We construct the critical middle cylinder from 20CrMo alloy steel, a material chosen for its superior engineering properties.

Why 20CrMo?

• Excellent Hardness and Wear Resistance: The addition of Chromium (Cr) and Molybdenum (Mo) creates a steel capable of withstanding constant abrasion from internal components and high-pressure hydraulic fluid, leading to a longer service life.

• High Impact Toughness: This material maintains strength under sudden, heavy shock loads—the everyday reality for a hydraulic breaker—effectively resisting cracking or failure.

• Good Hardenability and Weldability: 20CrMo responds predictably to our heat treatment processes, allowing us to achieve the desired hardness profile through its thickness. Its good weldability also facilitates repairs if ever needed.
  This strategic use of 20CrMo is a standard in high-stress components like gears and shafts, and we apply this same philosophy to build a more resilient breaker core.

Key Features

Material:
The main body assembly is constructed from high-strength steel alloys such as 42CrMo, ensuring exceptional durability, wear resistance, and a long service life in demanding environments.
Advanced Design:
Engineered to withstand extreme impact forces, the main body assembly offers superior structural integrity and reliable performance, even under harsh operating conditions commonly found in construction, demolition, and mining applications.
Wide Compatibility:
Available in a range of models—including HB10G, HB15G, HB20G, HB30G, and HB40G—the main body assembly is designed to fit various hydraulic hammer sizes, making it the ideal choice for different types of construction and mining machinery.

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Your Technical Partner: The Guchuan Advantage

Choosing Guchuan Machinery means partnering with a dedicated expert focused on your operational success.

• Over a Decade of OEM Expertise: Founded in 2010, we have built profound partnerships with global engineering machinery brands. Our deep B2B experience means we understand the precise quality and reliability your projects demand.

• In-House R&D & Customization: We possess the proprietary capability to develop and manufacture auto-frequency modulating, fully hydraulic breakers. Beyond our standard HB-Series, we can produce ultra-heavy-duty models compatible with tool diameters up to 210mm.

• Commitment to Certified Quality: Our manufacturing processes adhere to international standards. We provide comprehensive support, including mechanical test reports and pre-delivery video inspections to guarantee product integrity

Company Profile