The excavator demolition grapple, also known as sorting grapple or sorting grab, is a hydraulic attachment designed for handling irregular materials such as scrap steel, demolition debris, concrete blocks, wood waste, and mixed construction materials.
Unlike standard buckets, this attachment is built for gripping and separating rather than digging. It allows operators to process mixed materials directly on site, reducing manual sorting work and improving loading efficiency in demolition and recycling projects.
In modern construction waste management, a sorting grab is widely used in demolition yards, scrap processing stations, and infrastructure cleanup projects where material composition is unpredictable.
Working Video
Watch sorting grapple working demonstration on YouTube
Technical Specification Table
Model selection is directly based on excavator tonnage, hydraulic flow, and jaw opening size. The table below provides engineering reference data for matching operating conditions.
| Model | Unit | TG-DG02 | TG-DG04 | TG-DG06 | TG-DG08 |
| Weight | Kg | 380 | 750 | 1280 | 1650 |
| Max Opening | Mm | 1100 | 1600 | 2100 | 2400 |
| Oil Flow | L/min | 30-60 | 50-90 | 80-120 | 120-180 |
| Oil Pressure | Kg/cm² | 110-150 | 120-160 | 150-180 | 160-200 |
| Suitable Excavator | Ton | 3-8 | 8-15 | 15-25 | 25-40 |
Selection Guide Based on Specification Table
Proper selection of a demolition grapple should always follow measurable parameters rather than application guesswork. The key reference points are excavator tonnage, hydraulic oil flow, and material density.
1. Selection by Excavator Tonnage
3–8 ton excavator: TG-DG02 is suitable for light sorting tasks and small demolition sites.
8–15 ton excavator: TG-DG04 provides balanced gripping force and cycle speed.
15–25 ton excavator: TG-DG06 is recommended for mixed demolition waste and scrap handling.
25–40 ton excavator: TG-DG08 is designed for heavy-duty continuous sorting and loading.
2. Selection by Hydraulic Flow (L/min)
30–60 L/min → compact sorting grapple for light materials
50–90 L/min → general construction waste sorting
80–120 L/min → mixed demolition and recycling yards
120–180 L/min → high-efficiency scrap loading operations
3. Selection by Working Material Type
Light waste (wood, small debris) → small opening models
Mixed construction waste → medium opening balanced structure
Heavy scrap steel / concrete blocks → large opening heavy-duty grapple
4. Engineering Matching Logic (Important)
If hydraulic flow is insufficient, even a large grapple will operate slowly and inefficiently. Therefore, the correct matching of excavator tonnage + hydraulic system is more important than size alone.
For example, a 20-ton excavator with medium flow capacity should prioritize TG-DG06 rather than oversizing to TG-DG08, ensuring stable cycle speed and lower fuel consumption.
Application Scenarios
Demolition of residential and commercial buildings
Scrap metal recycling and loading operations
Construction waste sorting and transfer stations
Urban renovation and infrastructure cleanup
Port bulk material handling operations
Advantages
Strong gripping force for irregular materials
Stable hydraulic response under continuous operation
Improved sorting efficiency compared to buckets
Reduced manual labor cost in demolition sites
Compatible with most excavator brands
