Professional Hydraulic Breaker Cylinder Assembly for SB70/GCB210, SB81/GCB220, and SB100/GCB280 Models

Product Overview

As a leading manufacturer of engineering machinery hydraulic breakers in China, Guchuan Machinery Co., Ltd. proudly introduces our high-performance cylinder assembly specifically designed for heavy-duty hydraulic breakers. Our Back Head, Cylinder, and Front Head are precisely engineered for SB70/GCB210, SB81/GCB220, and SB100/GCB280 breaker models. Manufactured from premium alloy steels, these components ensure exceptional durability and reliability under extreme working conditions.

Key Technical Features

Advanced Material Selection

We offer three premium material options to meet diverse operational demands:

1. 20CrMo Alloy Steel

   • Excellent hardenability and high-temperature strength

   • Good weldability and fatigue resistance

   • Ideal for medium-impact working conditions

2. 35CrMo Alloy Steel

   • Superior balance of strength and toughness

   • Exceptional impact and fatigue resistance

   • Recommended for high-frequency breaking operations

3. 40Cr Alloy Steel

   • Ultra-high strength and wear resistance

   • Outstanding deformation resistance

   • Specifically designed for extreme heavy-duty applications

Precision Engineering Design

• Optimized Hydraulic Flow Channels: Minimize pressure loss and improve energy transmission efficiency

• Enhanced Stress Distribution Structure: Finite element analysis-optimized geometry eliminates stress concentration points

• Precision Tolerance Control: Ensures perfect compatibility with pistons, chisels, and other critical components

• Multi-Sealing Surface Treatment: Professional surface finishing technology guarantees long-term sealing reliability

Product Advantages

1. Exceptional Durability

Our cylinder components undergo specialized heat treatment processes, achieving surface hardness of HRC 38-45 while maintaining a tough core. This effectively resists crack initiation and propagation, extending service life by over 30%.

2. High-Efficiency Energy Transmission

Optimized internal structure and superior surface finish (Ra≤0.8μm) reduce internal friction, ensuring over 92% conversion of hydraulic energy into impact energy, significantly improving breaking efficiency.

3. Superior Compatibility

Specifically designed for SB70/GCB210, SB81/GCB220, and SB100/GCB280 models, these components perfectly match original hydraulic systems and mounting interfaces without requiring any modifications.

4. Easy Maintenance

• Standardized dimensions facilitate quick replacement

• Clear maintenance markings and interface identification

• Optimized disassembly structure reduces on-site maintenance time

Technical Principles and Design Philosophy

Hydraulic Impact Optimization System

Our cylinder design is based on Guchuan Machinery's proprietary auto-frequency conversion pure hydraulic technology, featuring:

• Intelligent Pressure Regulation: Automatically adjusts impact frequency according to rock hardness

• Optimized Buffer System: Reduces return stroke impact, protecting host equipment

• Energy Recovery Design: Maximizes hydraulic energy utilization while reducing consumption

Structural Integrity Assurance

• Multi-layer Reinforcement Design: Increased material thickness and reinforcement in critical stress areas

• Corrosion Protection: Manganese phosphate base coating plus specialized anti-corrosion coating for harsh environments

• Temperature Adaptability: Stable operation across a wide temperature range from -30°C to 120°C

Application Fields

Our cylinder assembly is suitable for:

• Mining and primary rock breaking

• Large-scale infrastructure construction

• Tunnel excavation projects

• Port and dock demolition

• Large concrete structure dismantling

Quality Control System

Every cylinder assembly undergoes:

1. Raw material spectroscopic analysis

2. Ultrasonic flaw detection

3. Dimensional accuracy verification via 3D measurement

4. Pressure testing (up to 350 bar)

5. Real working condition simulation testing

Why Choose Guchuan Machinery Cylinder Components?

Fifteen Years of Professional Manufacturing Experience

Since our establishment in 2010 in Changzhou, Jiangsu, Guchuan Machinery has specialized in hydraulic breaker core technology R&D. Our deep collaborations with world-renowned engineering machinery brands have provided extensive B2B cross-border trade expertise.

Independent R&D Capability

We possess complete independent design, development, and testing capabilities. Our breakthrough in auto-frequency conversion pure hydraulic technology enables us to deliver products that exceed industry standards.

Global Supply Chain Assurance

With mature international logistics and supply chain management systems, we ensure timely delivery and worldwide after-sales support.

Technical Parameter Comparison

Conclusion

Guchuan Machinery is committed to providing the highest quality hydraulic breaker core components to the global engineering machinery industry. Our cylinder assemblies for SB70/GCB210, SB81/GCB220, and SB100/GCB280 models represent industry-leading design concepts and manufacturing standards. No matter how challenging your working conditions, our products deliver reliable performance and exceptional value return.

Contact us today for professional technical consultation and customized solutions. Let Guchuan Machinery become your trusted partner in hydraulic breaker excellence.