The GBN70TL hydraulic breaker, based on the GB3TP model, is a heavy-duty silenced T-Series hydraulic breaker designed for mid-size excavators and demanding construction, demolition, concrete, rock, and general breaking applications. With a 380 kg operating weight and 75 mm tool, the GBN70TL delivers increased impact performance for excavators in the 6 to 9 ton class.
The GBN70TL is engineered for operators who require greater impact performance from a breaker designed for mid-size excavators. Its 75 mm moil-type tool delivers an impact energy of 622 joules (459 ft-lb) with an impact rate of 475–950 blows per minute.
The silenced GBN70TL has an operating weight of 380 kg (838 lb). It is specified for excavators from 6 to 9 tons, with approximately 7 tons listed as the suitable operating class.
The breaker requires a hydraulic oil flow of 40–80 L/min and operates at a breaker pressure range of 100–140 bar (1,450–2,030 psi). Proper hydraulic flow and pressure matching should be confirmed with the carrier excavator before installation.
The GBN70TL is also equipped for specialized applications with an underwater system option. GB's T-Series documentation identifies underwater system capability from the GBN60T and above.
An automatic grease system is also available as an option for the GBN70T and larger models, helping simplify routine lubrication during demanding operating conditions.
Designed for demanding demolition applications requiring increased impact energy and a robust breaker configuration for mid-size excavators.
The 75 mm tool and 622 J impact energy provide substantial breaking performance for suitable concrete, masonry, structural materials, and construction work.
Suitable for excavator applications involving rock breaking, hard material reduction, site preparation, and other demanding hydraulic breaking work.
Designed for excavators in the 6–9 ton range, with approximately 7 tons listed as the suitable operating class.
| Specification | GBN70TL / GB3TP |
|---|---|
| Series | T-Series |
| Base Model | GB3TP |
| Breaker Model | GBN70TL |
| Configuration | Silenced |
| Operating Weight – Silenced (Tool + Machine) | 380 kg / 838 lb |
| Operating Weight – Open Top | 380 kg / 838 lb |
| Main Body Weight | 192 kg |
| Tool Type | Moil |
| Tool Weight | 25 kg |
| Tool Diameter | 75 mm |
| Operating Pressure – Breaker | 100–140 bar / 1,450–2,030 psi |
| Setting Pressure – Machine | 180 bar / 2,610 psi |
| Impact Rate | 475–950 bpm |
| Accumulator Pressure | None – No Accumulator |
| Back Head Pressure (N2 Gas) | 16 bar / 232 psi |
| Required Oil Flow | 40–80 L/min / 10.5–21.1 GPM |
| Minimum Excavator Size | 6 tons |
| Maximum Excavator Size | 9 tons |
| Recommended / Suitable Excavator Class | 7 tons |
| Impact Energy | 622 J / 459 ft-lb |
| Automatic Grease System | Available Option |
| Underwater System | Available Option |
Important: Hydraulic flow and pressure requirements should be verified against the excavator manufacturer's specifications before installation. Actual attachment operating conditions may vary depending on the carrier machine, hydraulic system, tooling, and application. Automatic greasing and underwater operation require the appropriate optional configuration and should be used according to the manufacturer's operating requirements.
