Box Silent Type SB81 Hydraulic Breaker - 1978kg with 140mm Chisel for 18-26 Ton Excavators
High Power, Lower Noise Performance
The SB81 Silent-Type Hydraulic Breaker delivers elite breaking force exceeding 4,000 joules while significantly reducing noise pollution, making it the intelligent choice for urban and sensitive environment projects.
Engineered for Power and Compliance
The SB81 Silent-Type Breaker tackles demanding rock breaking and heavy demolition tasks while addressing critical modern worksite requirements: noise control and operational sustainability.
- Advanced Noise Reduction System: Specialized noise-dampening technology with optimized shroud design and internal damping materials achieves controlled noise levels of 118 dB.
- Intelligent Auto-Variable Frequency: Automatically adjusts impact rate (350-500 BPM) based on material hardness for optimized efficiency and reduced hydraulic shock.
- High-Efficiency Hydraulic Design: Pure hydraulic system delivers 4,067 Joules of impact energy with optimized oil flow for maximum force transfer.
- Robust Construction: Designed for 140mm tool diameter with heavy-duty, wear-resistant components for extended durability and lower total cost of ownership.
Technical Specifications
| 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 |
| 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 |
| 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 |
Ideal Applications
The Guchuan SB81 Silent Breaker is the optimal solution for projects where performance cannot compromise with regulations or community relations:
- Urban Demolition & Construction: Building demolition, foundation work, and trenching in cities, hospitals, schools, and residential areas with strict noise ordinances.
- Infrastructure Projects: Roadwork, bridge repair, and subway construction near sensitive zones.
- Quarry & Mining Operations: Primary and secondary rock breaking where noise mitigation is a growing concern.
- 24/7 Operations: Enables extended work hours in noise-regulated environments, increasing project flexibility.
Why Choose the Guchuan SB81 Silent Breaker?
- Regulation-Ready Performance: Achieves high-impact breaking while meeting stricter environmental and workplace noise standards.
- Enhanced Operator Comfort: Significantly reduces operator fatigue and hearing risk for better focus, safety, and productivity.
- Superior Power-to-Weight Ratio: Delivers top-tier impact energy for its class, ensuring faster completion of tough breaking tasks.
- Intelligent & Efficient: Auto-variable frequency system maximizes hydraulic efficiency, reduces fuel consumption, and minimizes wear.
- Proven Guchuan Reliability: Backed by over a decade of OEM-level manufacturing expertise with robust construction and reliable technical support.
Partner with Guchuan Machinery for hydraulic breakers that combine cutting-edge engineering with practical job-site smarts. Contact us today to discuss how this breaker can optimize your specific application.