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Models to suit: Mini Loaders • Skid Steers • Mini – Large Platform Excavators • Loaders • Tractors • Telehandlers

Invest in Advanced Design

Superior Performance

Thor Rock Breakers and Post Drivers Pty Ltd have leveraged long-term investment in sophisticated technology to produce a simple and effective design.  With only two internal moving parts, THOR’s line of breakers and post drivers ensure that operation of the attachment is easy, flexible and reliable.

THOR’s unique sliding bush design prolongs the service life of the hydraulic breaker/post driver and reduces after sales maintenance costs.

THOR ‘S’ models (silenced) hydraulic breakers/post drivers have been engineered with an advanced low noise shell and patented vibration protection system that reduces the impact on the machine.  This ensures that it is more comfortable for the operator to work with and is also much better for working in populated areas.


THOR’s ‘TH’ Series of hydraulic rock breaking hammers and hydraulic post drivers/rammers engineered design produces a stable, high precision durability and delivers a higher power to weight ratio than competitors, therefore achieving superior performance.  They have less body weight yet wield a higher impacting performance. 

Precise Blow Force


A. Contact – Initial Compression Stress Wave 

When the piston (1) strikes the top of the tool (2) it sends a compression stress wave (3) down to the working end of the tool.

If the chisel tool (moil) is touching rock, (or concrete, asphalt etc.) this energy/force (compressive stress wave) travels out of the tool directly into the rock (4) fracturing it.

Using the post tool (moil) has the same effect when touching steel or timber posts (including drill stem, rail line, large posts, timber split posts, strainers etc.) – the piston strikes the top of the post and sends a compressive stress wave to the working end of the moil, and the power/force drivers the post into the ground.

B. Recoil – Reflected Stress Wave

Immediately following the initial compressive stress wave, a reflected stress wave is formed (5) which travels back up the moil, ‘bouncing’ the piston up off the top of the moil.  This cycle of compressive and tensile stresses flowing up and down the moil is repeated with each piston blow (A & B).