Excavator Mounted Rock Breaker – Top Type SK40
The SK40 top-type hydraulic rock breaker is engineered for 4–8 ton excavators, delivering reliable performance in concrete demolition, rock excavation, and road construction. Built with a reinforced alloy steel housing, this attachment ensures long service life under heavy-duty conditions.
Key SEO-friendly highlights:
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Excavator rock breaker SK40 – optimized impact energy for fast breaking
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Top type design – simplifies maintenance and protects internal components
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Low-noise operation – ideal for urban and residential job sites
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Universal fit – compatible with major excavator brands (Komatsu, Hitachi, Caterpillar, Kobelco)
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Quick tool change – accepts moil, chisel, and blunt tools for versatile applications
| Specification | ||
| Items | Unit | SK40 |
| Operating Weight | kg | 321 |
| lbs | 706 | |
| Suitable Excavator | ton | 4~7 |
| Impact Energy Class | ft/lbs | 750 |
| Impact Rate | bpm | 500~900 |
| Required Oil Flow | gpm | 0.5~23.8 |
| Setting Pressure | bar | 170 |
| psi | 2418 | |
| Operating Pressure | bar | 90~120 |
| psi | 1564~1990 | |
| Tool(Chisel) Diameter | in. | 2.7 |
| mm | 68 | |
| Hose Diameter | in. | 1/2 |
| Carrier | ||
| Brand | Model | |
| DOOSAN / DAEWOO | DX50 / DX55 / DX60 | |
| HYUNDAI | R45 / R50 / R55 | |
| VOLVO | EC35 / EC38 / EC45/EC55 / ECR58 / EW60 | |
| CATERPILLAR | 304 / 304.5 / 305/305.5 / 307 | |
| KOMATSU | PC40 / PC45 / PC55/PC60 | |
| HITACHI | PC40 / PC45 / PC55/PC60 | |
| KOBELCO | SK45 / SK50 / SK55 | |
| CASE | CX40 / CX50 | |
| NEW HOLAND | E40 / E50 | |
| JCB | 3CX / 3CD / 4CX/8040 / 8045 / 8052 / 8060 | |
| KUBOTA / HIDROMEK | U-30 / KX161-3 | |
| YANMAR / SUMITOMO | VIO30 / VIO35 / VIO55 | |
| BOBCAT / JOHN DEERE | 50D / 60D/JD315 / JD410 | |
| IHI / LIEBHERR | AICHI D600 /30NX2 / 35NX2 | |
Whether you’re a contractor or equipment dealer, the SK40 rock breaker delivers a cost-effective solution with low maintenance costs and high productivity.
OEM inquiries welcome – contact us for competitive factory pricing and global shipping.









