SB30 Hydraulic Breaker
The SB30 is a light-class hydraulic breaker for 4–8 ton excavators, delivering strong performance for road breaking, foundation work, and medium rock excavation.
Impact Energy
400–600 J
Impact Rate
700–1000 bpm
Operating Weight
200–260 kg
Chisel Diameter
68 mm
Overview
The SB30 marks the transition from mini to light-class hydraulic breakers, designed for the highly popular 4–8 ton excavator segment. With 400–600 J of impact energy and a 68mm chisel diameter, the SB30 is capable of tackling medium-hardness rock, reinforced concrete, and asphalt pavement with genuine productivity.
The 4–8 ton excavator class is one of the most common in construction markets worldwide, and the SB30 is engineered to maximize the hydraulic potential of these machines. The oil flow requirement of 45–70 L/min aligns well with the auxiliary circuits of excavators in this class from Caterpillar, Komatsu, Hitachi, Volvo, and Doosan.
The SB30's 200–260 kg operating weight provides the ground reaction mass needed for effective percussion without overloading the excavator's front linkage. This balance of weight and power makes the SB30 one of the most productive breakers per kilogram in the SB series.
Technical Specifications
| Model | SB30 |
| Weight Class | Light |
| Compatible Excavators | 4–8 ton |
| Impact Energy | 400–600 J |
| Impact Rate | 700–1000 bpm |
| Operating Weight | 200–260 kg |
| Required Oil Flow | 45–70 L/min |
| Working Pressure | 120–160 bar |
| Chisel Diameter | 68 mm |
Applications
Key Strengths
- Strong performance in the light class
- Effective on medium-hardness rock and concrete
- Compatible with the popular 5–8 ton excavator segment
- Good productivity-to-cost ratio
- Widely available parts and service network
Operating Recommendations
Use the correct chisel angle — perpendicular to the work surface for maximum efficiency
Avoid using the breaker as a pry bar or lever
Monitor hydraulic oil temperature — stop if it exceeds 80°C
Position the excavator boom to keep the breaker vertical during operation
Maintenance Guidelines
Grease every 2–3 hours
Check and adjust nitrogen pressure every 100 hours
Inspect tie rods and bolts for looseness every 200 hours
Replace front bushing when clearance exceeds manufacturer specification
Recommended Maintenance Guides for the SB30
Brands That Make This Class
Multiple manufacturers produce breakers equivalent to the SB30 class.
South Korea / China · Est. 1981
Volume manufacturer with facilities in South Korea and China — broad SB-series range
View ProfileJapan · Est. 1875
Japanese precision engineering with 150-year rock drill heritage
View ProfileItaly · Est. 1976
Italian precision manufacturing — robust breakers for European construction
View ProfileJapan · Est. 1875
Japanese century-old rock drill heritage — precision breakers for demanding applications
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