Hydraulic Breaker for 21–30 ton Excavator
Excavators in the 21–30 ton class are matched with the SB81 extra-heavy hydraulic breaker for quarrying, mining, and major demolition projects.
Overview
The 21–30 ton excavator class is the domain of heavy construction, quarrying, and mining operations. These machines have the hydraulic power, structural strength, and stability to operate the largest production hydraulic breakers effectively.
For this class, the SB81 (1100–1400 kg, 2000–3000 J) is the recommended breaker. Its exceptional impact energy and 130mm chisel diameter make it the most productive option for hard rock breaking, large-scale demolition, and high-production quarry applications.
The SB81's hydraulic requirements — 150–200 L/min at 160–200 bar — are demanding, and it is essential to verify that your excavator's auxiliary circuit can meet these specifications. Most 21–30 ton excavators from major manufacturers are capable, but some models may require auxiliary circuit modifications or upgrades.
Recommended Models
Hydraulic Requirements
| Excavator Class | 21–30 ton |
| Oil Flow Required | 150–200 L/min |
| Working Pressure | 160–200 bar |
| Recommended Models | SB81 |
Common Compatible Excavators
* Always verify hydraulic flow and pressure specifications for your specific machine model before purchasing.
Common Selection Mistakes
Attempting to run the SB81 on a machine with insufficient hydraulic flow (under 150 L/min)
Operating without a hydraulic oil cooler — the SB81 generates extreme heat
Ignoring the back pressure specification — the SB81 is particularly sensitive to excessive back pressure
Not verifying the excavator's front linkage weight capacity before mounting
Selection & Efficiency Tips
Ensure the excavator has a high-flow auxiliary circuit before purchasing the SB81
Install a dedicated hydraulic oil cooler for continuous operation in warm climates
Use the correct chisel type for the material — moil point for hard rock, blunt for concrete
Limit continuous operation to 30 seconds maximum to prevent overheating