Can I hire an excavator with a rock breaker in NSW?

## Excavator Hire with Rock Breaker in NSW Rock breaking is one of the most challenging and specialised excavation tasks in Sydney. Hawkesbury Sandstone — a hard, layered sandstone — is present across much of Sydney's Inner West, North Shore, Eastern Suburbs, and parts of Western Sydney. When rock is encountered, a hydraulic rock breaker (also called a hydraulic hammer or rock hammer) attachment is required. ### What Is a Hydraulic Rock Breaker? A hydraulic rock breaker is an attachment that replaces the bucket on an excavator. It uses hydraulic pressure from the excavator to drive a hardened steel chisel (moil point) into rock at high frequency, breaking it into manageable pieces. The broken rock is then removed with the bucket. ### When Do You Need a Rock Breaker? A rock breaker is required when: - Excavation encounters rock that cannot be broken by the bucket teeth - The excavator bucket bounces off the material without penetrating - You can hear the distinctive ring of the bucket striking rock In Sydney, rock is most commonly encountered in: - Inner West (Marrickville, Leichhardt, Newtown, Balmain) - North Shore (Willoughby, Lane Cove, Mosman) - Eastern Suburbs (Randwick, Coogee, Maroubra) - Hills District (Castle Hill, Baulkham Hills) - Parts of Western Sydney (Penrith, St Marys) ### Rock Breaker Sizes and Machine Compatibility Hydraulic rock breakers must be matched to the excavator's hydraulic flow and pressure. BuildHire's rock breakers are matched to compatible machines: - **Small breaker:** Compatible with 1.7T excavator — suitable for thin sandstone layers (under 300mm) - **Medium breaker:** Compatible with 3.5T excavator — the standard choice for residential rock breaking - **Large breaker:** Compatible with 5.5T excavator — for large volumes of rock or very hard rock ### Rock Breaking Productivity Rock breaking is significantly slower than soil excavation. A 3.5T excavator with a medium breaker can break approximately 1–3 cubic metres of sandstone per hour, depending on rock hardness and layer thickness. Budget for 3–5× the time compared to soil excavation of the same volume. ### Rock Disposal Broken sandstone is heavy — approximately 2.2 tonnes per cubic metre. Arrange tipper truck hire for rock disposal. Many Sydney waste facilities accept clean sandstone rubble for recycling as fill or aggregate. Contact BuildHire on 1300 157 882 to discuss rock breaker hire for your project.