About Us / Associated Companies


Harrop is a licensed master distributor for Eaton Supercharger and Traction Control Products. The two companies share a synergy in research and development which leads to the continuous improvement of Supercharger and Traction Control Technology.

Eaton Corporation is a diversified power management company with 2016 sales of $20.9 billion. Eaton is a global technology leader in electrical components and systems for power quality, distribution and control; hydraulics components, systems and services for industrial and mobile equipment; aerospace fuel, hydraulic and pneumatic systems for commercial and military use; and truck and automotive drivetrain and powertrain systems for performance, fuel economy and safety. Eaton has approximately 70,000 employees and sells products to customers in more than 150 countries.

The Vehicle Group is comprised of the company's truck and automotive segments. The truck segment is a global leader in the design, manufacture and marketing of powertrain systems and other components for commercial vehicle markets. Key products include manual and automated transmissions, clutches, hybrid power and emission treatment systems.


Eaton's automotive segment produces key products such as superchargers, engine valves, valve train components, cylinder heads, locking and limited-slip differentials, fuel, emissions, and safety controls, transmission and engine controls, spoilers, exterior moldings, plastic components, and fluid connectors.


Harrop Engineering formed a supply partnership with John Hart in the early 1980s with the machinery specialist supplying a full compliment of Mazak CNC machines and associated equipment to Harrop for over a quarter of a century.


John Hart is a progressive and growth orientated privately owned organisation. John Hart's close association of some of the world's leading machine tool manufacturers over long periods have placed it in a unique position at the forefront of major industry developments and innovations. This has resulted in John Hart being a key player in the ongoing technology transfer to Australian manufacturers that has taken place over the past 60 years.