EarthQuake RB50S Hydraulic Rock Breaker (4.5–6.0 Tonne Excavators)

Dominate the Toughest Terrain: High-Performance Breaking for 5-Tonne Class Excavators

Product Description The EarthQuake RB50S Hydraulic Rock Breaker is the powerhouse of the mid-mini excavator range, specifically engineered for machines between 4.5 and 6.0 tonnes. Designed to bridge the gap between compact utility and heavy-duty demolition, the RB50S delivers massive impact energy for breaking reinforced concrete, oversized boulders, and hard-packed rock. Its "S-Series" silenced housing makes it an ideal choice for residential developments and urban infrastructure projects where noise control is mandatory. With a focus on durability and operator comfort, this breaker features an advanced internal dampening system that protects your excavator's arm from excessive vibration while maintaining relentless striking power.

Product Features

• Precision-Tuned Impact: Calibrated for 4.5–6.0t excavators to maximise blow frequency and energy without over-stressing the machine's hydraulic system.

• Fully Silenced "Box" Housing: The enclosed cradle reduces noise pollution and provides 360-degree protection for the internal power cell against site debris.

• Heavy-Duty Internal Buffering: High-density dampeners absorb recoil, significantly reducing wear on the excavator’s pins, bushes, and boom.

• Simplified Internal Engineering: Built with minimal moving parts to reduce the risk of failure and simplify onsite maintenance.

• Superior Heat Management: Engineered to operate consistently during extended shifts, ensuring the hydraulic oil remains at optimal temperatures.

• Industrial-Grade Tooling: Comes equipped with high-tensile chisels designed for maximum penetration and long-term wear resistance.

Frequently Asked Questions

• Will my 5-tonne excavator handle the hydraulic flow of the RB50S? Yes. The RB50S is designed to work within the standard auxiliary flow rates of 4.5t to 6.0t excavators. We verify your machine's specific flow and pressure settings to ensure the breaker is perfectly matched for peak performance.

• Is the hitch plate included for my specific brand of excavator? Absolutely. Every RB50S is supplied with a custom-manufactured head bracket to suit your machine’s specific pin diameter and ear width, allowing you to get to work without needing additional adapters.

• How often does the RB50S require greasing? For maximum protection of the tool and internal bushings, we recommend greasing the breaker every 1 hour of operation. Consistent lubrication is the most effective way to prevent premature wear and ensure the longevity of the hammer.

• Can the RB50S be used for trenching in hard rock? Yes, the slimline profile of the silenced housing makes it excellent for trenching. It provides the operator with a clear line of sight and allows the breaker to work in narrow excavations where wider, open-frame models might struggle.

The RB50S Rock Breaker

Suits all makes and models of mini excavator from 4.5 to 6 tonnes

Package includes:

• RB50S Rock Breaker
• Head Bracket
• Hoses and Couplers (Poppet or Flat Faced)
• Tool Box and Nitrogen Recharge Kit
  
• 2x Chisels
• Premium Rock Breaker Grease and Grease Gun
• 2 Years Warranty

Perfect for:

Airman AX48U, AX55U
Bobcat E45, E50
Case CX57, CX50
Cat 304, 305, 305.5
Eurocomach ES50, E57, ES60
Hitachi ZX48U, ZX55U, ZX65
Hyundai R55, R60
JCB 48Z, 55Z, 65R
Kato HD45, HD50, HD55, HD60
Kobelco SK45SR,SK55SR
Komatsu PC45MR, PC55MR
Kubota U45, U48, KX057
New Holland E57, EC50
Takeuchi TB250, TB260
Sany SY50, SY60C
Sunward SWE50
Volvo ECR50D, ECR40D
Wacker Neuson EZ53, EZ57
XCMG XE55
Yanmar Vio45, Vio50, Vio55
Yuchai YC50, YC55

Please provide machine make & model and hydraulic coupler type in Customer Comments

Purchase the EarthQuake RB50S Rock Breaker and get *FREE FREIGHT!

We ship earthmoving attachments Australia wide. *FREE FREIGHT Terms can be found here.