Large Rock Breakers

Core Features of the Large Earthquake SX Rock Breaker Range (RB250SX to RB350SX)

This large-class range represents the pinnacle of EarthQuake's engineering for standard excavators, featuring maximum breaking force combined with advanced technology to protect both the attachment and the host machine.

1. Extreme Impact Force and Breaking Capacity

The primary feature of the large SX range is the massive kinetic energy they deliver, making them suitable for the toughest materials and largest-scale projects.

• Colossal Impact Energy: The power output of these models is exponentially greater than the smaller ranges. The RB250SX delivers approximately 4200 Joules, while the range culminates with the RB350SX (for 30-40T excavators) generating up to 9000 Joules of impact energy. This immense force is capable of fracturing massive boulders and primary rock faces, often replacing the need for blasting in sensitive areas.
• Optimal Strike Rate: While the smaller hammers rely on high BPM, these larger units focus on maximum power per blow. The impact rate is lower (e.g., 250-500 BPM), but the energy transfer is optimised to create deep, decisive fractures in dense, hard materials like granite and mass concrete.
• Heavy Operating Weight and Chisel Size: Corresponding to the host machine, the operating weights are substantial (e.g., RB250SX at 1825 kg, RB350SX at 2850 kg) to provide the necessary mass for effective impact. They utilise large diameter chisels (e.g., 140mm to 155mm) engineered to withstand the extreme forces and provide maximum penetration.

2. Integrated Advanced Control Technology

The "SX" designation is crucial in this heavy-duty range, signifying the inclusion of sophisticated protective and operational features essential for high-value assets.

• Anti-Blank Firing (ABF): All models in this range are equipped with Anti-Blank Firing (ABF) technology. This critical feature automatically halts the piston cycle when the material is broken and the tool is left free-striking. ABF protects the internal power cell from damaging metal-on-metal impact, dramatically increasing the longevity and reducing costly repairs.
• Impact Control (IC): The Impact Control (IC) feature allows operators to adjust the hammer's performance parameters—specifically, the BPM and power—on the fly. This infinitely variable adjustment is vital for efficiency: high power/low BPM for hard rock, and lower power/high BPM for laminated or softer rock/concrete. This customisation maximises production and extends component life.
• Reinforced Through-Bolt Structure: The internal components are held together with strengthened through-bolt mounting. This design is essential for securing the power cell against the continuous, high-recoil forces generated, thereby increasing maintenance intervals and ensuring structural integrity during the toughest jobs.

3. Industrial-Grade Durability and Protection

When breaking is a primary function, durability against abrasion, heat, and structural fatigue is paramount.

• Fully Enclosed Box Design: The large breakers feature a fully enclosed Box Design casing. This not only shields the internal hydraulic power cell from heavy debris and contamination but also incorporates a vibration-dampening block to reduce structural noise output. This noise reduction is a key benefit for large-scale operations near urban areas.
• Optimised Hydraulic System: Engineered to handle the high Oil Flow (Lpm) and Operating Pressure (Bar) of 20-40 tonne excavators, the hydraulic system is robust and efficient, ensuring sustained, non-stop operation without overheating or excessively straining the host machine's pump.
• Simplified Serviceability: While robust, the box design is typically constructed with major components held by through bolts, which are designed to allow for simplified field serviceability and maintenance when required, minimising downtime.

Purchase Advantages of the Earthquake RB-SX Large Breaker Range

Investing in the RB250SX to RB350SX range is a strategic decision for businesses engaged in heavy civil works, quarrying, and high-volume demolition, where the return is measured in speed, capacity, and minimal operational interruption.

1. High-Volume Production and Project Capacity

These breakers are designed for maximum throughput, enabling companies to take on the largest, most demanding projects.

• Primary Excavation Tool: The power of the RB300SX and RB350SX allows the excavator to serve as a primary breaking tool in quarry applications or for significant rock cuts on highways and infrastructure projects, eliminating or reducing the need for costly and time-consuming secondary methods.
• Time-Saving Efficiency: The massive impact energy and optimal performance settings (via IC) ensure that even the largest, most stubborn material is fractured rapidly, drastically reducing project completion times and improving contract profitability.
• Conquering Large-Scale Demolition: They are the necessary tools for dismantling large industrial facilities, bridges, and heavily reinforced foundations, where their large chisel diameter and force can penetrate and break thick, high-strength concrete.

2. Advanced Component Protection and Cost Control

The integrated technologies translate directly into reduced operational expenditure and maintenance costs, improving the Total Cost of Ownership (TCO).

• Standard Auto Greasing System (AGS): The purchase package for the large SX range includes the Auto Greasing System (AGS), which feeds premium grease to the crucial wear points (tool bushings) automatically and continuously. This continuous, correct lubrication is the single most important factor in extending the life of the chisel and bushings, saving significant money on replacement parts and labour.
• Longevity through ABF/IC: The ABF and IC features actively protect the most expensive components—the piston and power cell—from damage. By mitigating blank firing and ensuring the correct setting is used, the service life of the breaker is maximised, making the attachment a long-term capital asset.
• Protection of Capital Asset: The superior dampening and design of the large breakers protect the 18-40 tonne host excavator itself. The machine's boom, pins, and sophisticated hydraulic pump are shielded from the severe shock loading that lower-quality hammers would impart, thereby maintaining the excavator's resale value and lowering its overall maintenance costs.

3. Complete and Comprehensive Purchase Package

The large breakers are delivered as a fully operational system, simplifying the purchasing and deployment process for high-pressure projects.

• Zero Hidden Costs: The comprehensive package includes the Breaker Unit, Machine-Matched Head Bracket, Hoses and Fittings, Tool Box, Nitrogen Recharge Kit, 2x Chisels, Premium Grease, Grease Gun, and the critical Auto Greasing System. This ensures immediate field readiness with all necessary consumables and maintenance tools provided.
• Assured Reliability: Backed by a 2-Year Warranty, the purchaser receives an assurance of quality and factory support for these high-power, high-stakes attachments, reducing financial exposure to component failure.