Top-type hydraulic breakers are high-performance percussion hammers designed for heavy-duty applications such as tunneling, demolition, mining construction. Unlike side-typed breakers, their body aligns vertically above the chisel, maximizing energy transfer and precision. METDEEM‘s top-type hydraulic breakers combine robust materials, advanced engineering, and global compatibility, offering superior efficiency and reliability in challenging work environments.
Understanding Top Type Hydraulic Breakers
What is a top-type hydraulic breaker?
A top-type hydraulic breaker is mounted directly above the chisel on an excavator or a lodader. This vertical alignment ensures that the impact force is transmitted straight to the target material, making it ideal for breaking hard rock,tunnel expansion, concrete, and other tough surfaces.
Key Components and Material Advantages
The core structure of a top-type breaker includes:
| Component | Material & Treatment | Benefit |
|---|---|---|
| Cylinder | 20CrMo alloy steel, forged | Stable performance, long service life |
| Piston | 40CrNiMo forged steel, carburized | High hardness (HRC 60°), strong impact resistance |
| Chisel | 42Cr steel, heat-treated | Full penetration(HRC 60°), minimal wear |
| Valve | Precision ground | Smooth operation, higher impact frequency |
Using premium materials and precision heat treatments, METDEEM breakers resist wear, fatigue, and cracking even under continuous high-load operations.
Comparison with Other Breaker Types
Top type vs. side type breakers
Top type breakers feature a vertical design, while side type breakers are offset to one side. Key differences include:
- Energy Transfer: The Top type ensures direct downward impact, reducing energy loss.
- Balance: Centralized alignment reduces stress on the excavator arm.
- Maneuverability: Side types allow easier operation in tight spaces but may create uneven stress.
- High-Load Performance: Top types excel under continuous heavy-duty operations, such as mining and quarrying.
METDEEM’s DM190 Hydraulic Breaker exemplifies a top-mounted design optimized for flexible and versatile operation.
Structural differences and implications
Top type breakers like DM190 feature better balance due to centralized impact alignment. This reduces stress on excavator arms and ensures more efficient energy transfer to the chisel. The top type has better maneuverability in narrow spaces, while the side type is more stable.
Performance in high-load conditions
Under high load conditions, working in a limited space, the top type breaker has better flexibility and can break from multiple angles.
Advantages in Operations
Enhanced durability under extreme loads
Top-type hydraulic breakers are engineered with superior materials like 20CrMo alloy steel cylinders and 42CrNiMo pistons that provide excellent wear resistance and toughness. Through precision heat treatment and strict quality inspection standards, our breakers and chisels are resistant to wear, fatigue, and fracture, significantly reducing replacement frequency and saving operating costs.
These breakers deliver consistent impact energy ideal for breaking hard rock formations common in mining sites. The DM190 Hydraulic Breaker Top Type combines speed with power for enhanced productivity. Speed, high productivity, low maintenance cost, and long service life.
Reduced downtime and maintenance needs
Designed for longevity, METDEEM breakers use forged and treated components that resist cracking and deformation even under high loads. Cylinders machined from this material exhibit no microscopic deformation or cracking under stress, resulting in a longer service life.
Benefits for Demolition Projects
Precision in controlled demolition
The vertical alignment of top type breakers allows for precise targeting during demolition. This is especially important when working near sensitive structures or in urban environments.
Compatibility with various carriers
This product is compatible with major domestic and international excavator brands such as CAT®, Komatsu®, Volvo®, Sany®, and XCMG®. Models like DM05, DM70, or DM230 cover excavators from 0.8 tons to 100 tons and beyond.
METDEEM’s Engineering Strength
Design philosophy of METDEEM breakers
Our focus is on delivering high-efficiency equipment backed by modern design principles. Every breaker is engineered for an optimal power-to-weight ratio. Modern design with achieving energy conservation, cost reduction and increased work efficiency.
Materials and manufacturing quality
- Materials: Suitable materials are selected in accordance with the mechanical properties of individual components.
- Core Components: The cylinder is fabricated via multi-pass forging of 20CrMo steel followed by subsequent machining.The piston is machined from forged 42CrNiMo material.The valve is processed using 20CrNiMo material.
- Processing Technology: Prior to heat treatment, CNC machining is employed to ensure the dimensional accuracy of all parts. Post heat treatment, CNC equipment is utilized for grinding the cylinder , thereby guaranteeing its precision and surface finish.Superior processing technology can enhance the working efficiency and impact force of the hydraulic breaker, while minimizing the wear of accessories.
Adaptability to global mining standards
With ISO 9001 and CE certifications, METDEEM equipment meets international safety and performance benchmarks. Our products have been exported to the USA, France, Germany, Australia, New Zealand, Canada, Italy, Russia, Thailand, etc.
Maintenance and Serviceability
Simplified inspection points
All METDEEM breakers are designed with easy-access maintenance ports to inspect pistons, seals, and valves without dismantling major components.
Easy access to wear parts
The use of modular assemblies allows rapid replacement of pistons or chisels without downtime. With regular grease application, the lifespan can exceed 2,000 hours. All accessories of the breaker are standardized, and standard accessories can be replaced freely without affecting their performance. (Chisels, pistons, valves, seals, etc.)
Long service life of key components
Components like the chisel made from heat-treated 42Cr maintain structural integrity under repeated impacts. After processing, the chisel reaches a hardness of approximately HRC 60°, achieving full penetration. The piston is processed by forging 40CrNiMo multiple times. The piston has good corrosion resistance and high stability. Multiple impacts will not cause impact fatigue or cracking, and the loss is very low.
Choosing the Right Hydraulic Breaker Model
Factors to Consider:
- Application type (mining vs. demolition).
- Carrier weight compatibility.
- Required impact frequency.
- Site conditions.
Matching Breaker Size to Carrier:
- Light Duty: DM10, 110kg, for excavators 1.5–1.7 tons.
- Medium Duty: DM81, 2050kg, suitable for 19–24 ton machines.
- Heavy Duty: DM200, 6400kg, for 55–65 ton excavators, delivering 230–320 blows per minute.
METDEEM Product Range: Top type series like DM190 combines durability, power, and global compatibility, representing METDEEM’s flagship model for intensive construction operations.
Conclusion
METDEEM top-type hydraulic breakers offer unmatched durability, efficiency, and precision for mining, tunnel expansion, indoor demolition, and heavy-duty construction. By combining high-strength materials, advanced engineering, and global compatibility, METDEEM ensures that every breaker delivers consistent performance, reduced downtime, and superior return on investment.
FAQ
Q: What makes a top-type hydraulic breaker better for tunnel operation?
A: A top type breaker can work from multiple angles. It can be broken horizontally or upwards.
Q: Are METDEEM breakers compatible with my excavator?
A: This product is compatible with major domestic and international excavator brands such as CAT®, Komatsu®, and Volvo®.
Q: How often do I need to replace sleeves?
A: With regular grease application, the lifespan can exceed 2,000 hours.
