Views: 0 Author: Site Editor Publish Time: 11-09-2025 Origin: Site
Hydraulic breakers (often referred to as hydraulic hammers) require adjusted operating parameters and techniques based on rock characteristics to boost efficiency and reduce equipment wear. As a professional manufacturer of durable excavator attachments, RAY Attachments specializes in hydraulic breakers—our core strength product line—engineered to fit excavators ranging from 0.8 to 70 tons. Below is a detailed guide to optimizing hydraulic breaker performance across various rock types, with insights tailored to maximize both productivity and equipment longevity.
Characteristics: Loose structure, low compressive strength (<50MPa), easy to break but may contain clay or fractures.
Operating Tips:
High frequency, low impact force: Use higher frequency (by increasing hydraulic flow) and reduce single-impact force for rapid fragmentation. RAY Attachments’ breakers feature adjustable flow controls, making it simple to fine-tune frequency for soft rock applications.
Flat-head chisels: Opt for wide-face chisels to expand the breaking area. RAY Attachments offers dedicated flat-head (e.g., IPB-type) chisels, designed to pair seamlessly with our 0.8–70 ton excavator breakers for soft rock tasks.
Vertical operation: Maintain a vertical impact angle to prevent chisel slippage.
Avoid excessive penetration: Prevent the chisel from getting stuck in soft rock by controlling penetration depth.
Characteristics: Uniform structure, moderate compressive strength (50–100MPa).
Operating Tips:
Medium frequency, medium pressure: Balance frequency and impact force by adjusting the hydraulic system to medium pressure. RAY Attachments’ hydraulic breakers are calibrated for stable medium-pressure operation, ensuring consistent performance on medium-hard rock.
Tapered chisels: Enhance penetration and concentrate impact energy with tapered chisels. Our tapered (IPN-type) chisels are built for durability, ideal for pairing with our mid-range breakers (suitable for 5–30 ton excavators).
“Point-Line-Surface” breaking: Start with single-point drilling, expand along cracks, then breaker the entire area.
Intermittent operation: Pause for 10 seconds after every 3–5 minutes of impact to prevent hydraulic system overheating— a design consideration integrated into RAY Attachments’ breaker cooling systems.
Characteristics: Dense structure, high compressive strength (>100MPa), and strong wear resistance.
Operating Tips:
Low frequency, high impact force: Reduce frequency (by decreasing hydraulic flow) and increase single-impact energy (by raising pressure). RAY Attachments’ heavy-duty breakers (for 20–70 ton excavators) are engineered to deliver high impact force at low frequencies, optimized for hard rock.
Pointed/cross-head chisels: Use high-hardness alloy chisels (e.g., tungsten carbide-tipped) for enhanced penetration. Our cross-head (IPC-type) chisels are specifically designed for hard rock, ensuring long service life with RAY’s breakers.
Angled impact: Position the chisel at a 60–75° angle to the rock surface, leveraging shear force to expand cracks.
Pre-cracking assistance: Drill holes or use expansion agents to create weak points before impacting along the cracks.
Characteristics: Extremely high compressive strength (>200MPa), requiring specialized handling.
Operating Tips:
Ultra-high pressure mode: Operate at the equipment’s maximum pressure (refer to the breaker’s limit parameters). RAY Attachments’ premium breakers (for 40–70 ton excavators) support ultra-high pressure operation, meeting the demands of extra-hard rock tasks.
Short-duration point impact: Impact the same point continuously for no more than 30 seconds to prevent chisel overheating.
Auxiliary breaking: Combine with drilling-blasting or high-temperature flame pre-cracking for efficiency.
Chisel cooling: Shut down every 15 minutes to cool the chisel, avoiding annealing and failure. RAY Attachments’ chisels are heat-treated for improved temperature resistance, reducing cooling downtime.
Soft rock: Flat-head or shovel-type chisels (e.g., IPB-type).
Hard rock: Pointed (IPN) or cross-head (IPC) chisels.
RAY Attachments recommendation: Regularly inspect chisel wear—replace when wear exceeds 15%. Our chisels are manufactured with high-grade steel for extended durability, minimizing replacement frequency.
Adjust the flow valve based on rock hardness: High flow/low pressure for soft rock; low flow/high pressure for hard rock. RAY’s breakers feature user-friendly flow valves, simplifying on-site adjustments.
Maintain hydraulic oil temperature between 50–60°C (shut down if it exceeds 80°C to prevent damage).
Avoid angles <45° between the chisel and rock to prevent damage to the piston rod.
For hard rock, prioritize “angled impact” over vertical impact (as outlined in Section I.3).
For thick rock layers, strip in layers—each layer should not exceed 1/3 the chisel length. RAY Attachments’ breakers offer consistent impact force across layers, ensuring uniform fragmentation.
Ensure the chisel is always in contact with rock; limit blank firing to <10 seconds.
Many RAY Attachments breakers come with integrated blank firing protection sensors as a standard feature, enhancing operational safety.
Use rubber damping pads or hydraulic buffers to reduce machine vibration. RAY’s breakers are designed with built-in damping systems, minimizing vibration transfer to the excavator.
Check accumulator nitrogen pressure every 8 hours (maintain 90% of the rated value).
Lubricate the chisel guide ring every 50 hours. RAY Attachments provides maintenance guides for all our breakers, simplifying upkeep.
Use short-stroke mode in narrow spaces to reduce chisel swing.
For wet environments, use rust-resistant coated chisels—available as an option for all RAY breakers.
Fractured rock layers: Impact along natural cracks and use high-frequency mode to expand fractures. RAY’s adjustable-frequency breakers excel in this scenario, adapting to crack propagation needs.
Quartz-containing rock: Reduce impact frequency to avoid chisel cracking due to high hardness.
Frozen soil/ice rock: Preheat the chisel to above 0°C to prevent low-temperature brittle fracture.
By adjusting parameters appropriately, selecting compatible tools, and following safety guidelines, you can significantly improve breaking efficiency and extend equipment life. For extreme working conditions, we recommend developing a customized breaking plan based on geological reports. As a trusted provider of hydraulic breakers for 0.8–70 ton excavators, RAY Attachments is committed to delivering durable, high-performance attachments that meet the diverse needs of rock-breaking applications worldwide.
