Excavator Hydraulic Breaker SB40 Silent Box Type
325kg | 68mm Chisel | Fit 4–7 Ton Machines
Discover Guchuan's SB40 silent-type hydraulic breaker. Designed for 4-7 ton excavators, it delivers 677 Joules of impact energy with a low 109 dB noise level. Get OEM-quality performance at a competitive price. Expert engineering for demanding applications.
Advanced Power with Silent Box Technology
The SB40 Silent Box-Type Hydraulic Breaker represents Guchuan's commitment to engineering excellence. Developed as a high-performance alternative to models like the Soosan SB40, it delivers equivalent power with proprietary design innovations, improved durability, and cost-effective ownership.
Precision Engineering and Compatibility
Every detail of the SB40 is optimized for dependable impact force, smooth operation, and seamless hydraulic integration. Ideal for 4-7 ton excavators and skid-steer loaders, ensuring versatility across various jobsite conditions.
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 |
68 |
4.0-7.0 |
298 |
40-70 |
110-140 |
400-800 |
Quiet Strength Through Intelligent Engineering
The SB40 features Silent Box-type construction that merges structural strength with acoustic efficiency for superior performance.
Noise Reduction Technology (109 dB)
Conventional breakers can exceed 120 dB, making them unsuitable for urban or indoor projects. The SB40's sealed casing and multi-layer damping system isolate impact noise and absorb vibrations, allowing work in noise-restricted environments without compromising power.
Reinforced Structure for Durability
The boxed frame provides superior rigidity compared to open "I-type" bodies. This enhances stability, minimizes torsional stress, and reduces housing fatigue risk for longer service life during continuous heavy-duty demolition.
Intelligent Hydraulic System
Operating on a pure hydraulic platform, the SB40 integrates Guchuan's proprietary auto-frequency adjustment system. It automatically modulates impact rate and force based on material hardness, preventing "blank firing" and improving long-term reliability.
Versatile Applications
- Secondary Rock Breaking: Efficiently reduces oversized rocks into manageable sizes
- Concrete Demolition: Ideal for foundations, reinforced slabs, and walls
- Trenching & Road Work: Breaks asphalt and compacted ground effortlessly
- Urban & Indoor Projects: Exceptional for low-noise job sites and renovation works
Why Choose Guchuan SB40
Proven Compatibility & OEM Standards
Direct-fit replacement for popular models like SB40, matching dimensions and performance while offering enhanced engineering value. Every unit undergoes strict quality inspection for OEM-grade precision.
High Value and Cost Efficiency
As a B2B-focused manufacturer, Guchuan eliminates intermediary costs, delivering world-class performance at competitive pricing. Combines durability, efficiency, and total cost optimization for superior ROI.
Expert R&D and Customization
Established in 2010, Guchuan Machinery has strong foundations in hydraulic system research and design. We develop technologies like auto-frequency control and can tailor products to meet specific customer requirements.
