Guchuan Construction Machinery Main Body SB70SB81 SB21 Hydraulic Breaker Hammer Spare Parts
This article provides a detailed technical overview of our premium breaker hammer bodies designed for models SB70/GCB210, SB81/GCB220, and SB121/GCB320.
Professional Guide to Guchuan Machinery's Breaker Hammer Bodies: Models SB70/GCB210, SB81/GCB220, SB121/GCB320
Technical Specifications & Applications
Our SB-series breaker hammer bodies are engineered for heavy-duty demolition, mining, and quarrying operations:
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SB70/GCB210: Ideal for excavators in the 18-25 ton range, perfect for secondary rock breaking and concrete demolition
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SB81/GCB220: Designed for 25-35 ton excavators, optimized for quarry operations and heavy construction projects
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SB121/GCB320: Built for 40-50 ton excavators, delivering maximum impact energy for primary rock breaking and large-scale demolition
These models are compatible with tool diameters of 175mm, 195mm, 200mm, 205mm, 210mm, and can be customized for ultra-heavy duty applications with tool diameters up to 210mm.
Advanced Material Science & Construction
Guchuan breaker bodies utilize premium alloy steels selected for specific performance characteristics:
Core Material Composition:
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20CrMo & 20Cr2Ni4: Used in high-stress components for superior toughness and fatigue resistance
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42CrMo & 40Cr: Employed in main structural elements for optimal strength-to-weight ratio
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35CrMo: Applied in wear-resistant sections for extended service life under abrasive conditions
Our proprietary heat treatment processes enhance material properties, creating a perfect balance between hardness (for wear resistance) and ductility (to prevent catastrophic failure).
Parameter
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Light Weight Range Hydraulic Breaker
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| Model No. | Chisel Diameter (mm) | Excavator Weight (ton) | Body Weight (kg) | Working Flow Rate (L/min) | Working Pressure (Bar) | Impact Rate (bpm) |
| SB10/GCB40 | 40 | 0.8-2.5 | 73 | 15-30 | 90-120 | 800-1400 |
| SB20/GCB45 | 45 | 1.2-3.0 | 100 | 20-40 | 90-120 | 700-1200 |
| SB30/GCB50 | 53 | 2.5-4.5 | 120 | 20-50 | 90-120 | 500-900 |
| SB40/GCB60 | 68 | 4.0-7.0 | 298 | 40-70 | 110-140 | 400-800 |
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Medium Weight Range Hydraulic Breaker
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| SB43/GCB75 | 75 | 6.0-9.0 | 375 | 50-90 | 120-150 | 400-800 |
| SB50/GCB100 | 100 | 11-16 | 890 | 80-110 | 150-170 | 350-700 |
| SB81/GCB22O | 140 | 18-26 | 1754 | 120-180 | 160-180 | 350-500 |
| SB81A/GCB220 | 140 | 18-26 | 1773 | 120-180 | 160-180 | 350-500 |
| HB20G/GCB200 | 135 | 18-25 | 1680 | 125-150 | 160-180 | 400-800 |
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Large Weight Range Hydraulic Breaker
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| SB121/GCB320 | 155 | 28-35 | 2555 | 180-240 | 160-180 | 300-450 |
| SB131/GCB350 | 165 | 35-43 | 3065 | 200-260 | 160-180 | 250-400 |
| HB30G/GCB300 | 150 | 25-30 | 2305 | 160-190 | 160-180 | 350-700 |
| GCB500 | 195 | 50-60 | 5350 | 245-290 | 230-250 | 100-150 |
| GCB650 | 210 | 65-100 | 7200 | 290-340 | 250-270 | 90-130 |
Innovative Hydraulic Technology
Intelligent Frequency Control System:
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Automatically adjusts impact rate based on material hardness
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Optimizes energy consumption while maximizing productivity
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Reduces hydraulic shock and system stress
Pure Hydraulic Design Advantages:
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Eliminates need for nitrogen gas systems
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Reduced maintenance complexity
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Consistent performance across temperature variations
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Environmentally friendly operation
Engineering Excellence & Design Features
Structural Integrity:
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Finite Element Analysis (FEA) optimized design
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Stress-distributing geometry minimizes peak loads
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Reinforced mounting brackets for secure excavator attachment
Performance Enhancements:
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Advanced accumulator technology for energy recovery
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Precision-machined guide systems for optimal tool alignment
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Multi-stage dampening to protect carrier machinery
Thermal Management:
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Efficient heat dissipation design
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High-temperature seal technology
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Optimal fluid flow paths to prevent overheating
Comparative Advantages Over Conventional Breakers
Durability & Longevity:
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30-40% longer service life compared to industry standards
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Reduced downtime through preventive maintenance design
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Easy-access components for simplified servicing
Operational Efficiency:
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Higher energy transfer efficiency (up to 72% hydraulic-to-impact conversion)
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Lower fuel consumption per volume of material processed
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Reduced recoil vibration for operator comfort and machine protection
Versatility & Compatibility:
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Designed to work with multiple carrier brands and models
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Adaptable to various working conditions without performance compromise
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Quick-change tool systems for operational flexibility
Industry Applications & Case Studies
Mining & Quarrying:
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Primary and secondary rock breaking
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Trench rock excavation
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Oversize material reduction at processing plants
Construction & Demolition:
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Concrete structure demolition
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Foundation work
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Road and pavement breaking
Specialized Applications:
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Tunnel and trench excavation
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Underwater demolition (with appropriate modifications)
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Extreme condition operations
Maintenance & Service Support
Guchuan's global support network ensures:
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Genuine spare parts availability
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Technical documentation in multiple languages
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Remote diagnostic support
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On-site service training for partners
Why Choose Guchuan Breaker Hammers?
Proven Expertise:
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14+ years of specialized breaker manufacturing
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ISO-certified quality management systems
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Continuous R&D investment (5% of annual revenue)
Global Recognition:
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Preferred OEM supplier to leading machinery brands
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Products operating in 50+ countries worldwide
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Consistently high customer retention rate
Commitment to Innovation:
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Annual product enhancements based on field data
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Custom engineering solutions for specific applications
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Environmental compliance across all markets
Company Profile
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.



