Heavy-Duty Post Rammer & Rock Breaker – 3–4.5T Excavators
Dual-Function Tool | Compact to Mid-Size Excavator Applications
Industrial-Grade Combination Tool for Post Installation & Light Breaking
The HFP Heavy-Duty Post Rammer & Rock Breaker for 3–4.5 tonne excavators is a dual-function hydraulic attachment designed to deliver efficient post installation alongside light rock and concrete breaking capability in a single, robust tool.
Engineered for fencing, landscaping, utilities, trenching, and light demolition, this attachment reduces attachment change-overs while providing increased impact energy for heavier posts and firmer ground conditions.
Built for Australian conditions, it is suited to contractors, hire fleets, councils, utilities, and specialist operators requiring a versatile, serviceable attachment for mid-size excavators.
Functional Overview
This attachment operates as both:
- a hydraulic post rammer for driving posts and pickets, and
- a light-duty hydraulic rock breaker for concrete, rock, and hard ground preparation.
The combination design improves on-site efficiency by allowing multiple tasks to be completed with one attachment, reducing downtime and simplifying site logistics.
With increased impact energy compared to smaller models, this unit is well suited to commercial fencing and civil support works.
Design & Construction
- Dual-function configuration
Enables post driving and light breaking using a single hydraulic attachment. - Matched operating weight
Designed to suit 3–4.5T excavators while maintaining stability and control. - High-efficiency oil circuit system
Delivers consistent impact performance with controlled oil consumption. - Simplified internal structure
Fewer components for easier servicing, reduced downtime, and long service life.
Machine Compatibility
- Excavator class: 3–4.5 tonne
- Compatibility: All makes and models within this operating range
- Actuation: Hydraulic
Machine make and model details must be provided in the order notes at checkout or emailed after purchase to ensure correct hose and fitting configuration.
Technical Specifications – 3–4.5T Model
| Parameter | Specification |
|---|---|
| Operating Weight | 190 kg |
| Working Flow | 25–45 L/min |
| Working Pressure | 90–120 bar |
| Impact Rate | 500–1000 BPM |
| Impact Energy | 320 joule |
| Hose Diameter | 1/2 inch |
| Tool Diameter | 53 mm |
| Carrier Suitability | 3–4.5 tonne excavators |
What’s Included
- Heavy-duty hydraulic post rammer / rock breaker unit
- 1 × post cup
- 4 × chisel tools supplied:
• 1 × Moil point chisel
• 1 × Blunt chisel
• 1 × Wedge chisel
• 1 × Conical chisel - Hoses and fittings
Note: Machine-side quick connects are not included.
Warranty & Support
- 12-month manufacturer’s warranty
- Ongoing after-sales technical support
- Local parts availability and technical assistance
Designed for long-term deployment in commercial, fleet, and government environments.
Ordering & Delivery
🛒 Add to Cart
– order online via website checkout
📝 Add machine details in the order notes, or email them after purchase
📞 Technical assistance available on 03 9398 0493
📧 sales@hardwoodforestproducts.com.au
Delivery available Australia-wide. Pickup available from Kilsyth VIC.




