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Contractors World

The world's leading magazine for construction, demolition, mining and quarrying industries.

Contractors World  -
2014 Vol 5 No 5
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What's New In Plant & Equipment

New Cat 825K Compactor

New Cat 825K Compactor


The new four-drum, padfoot Cat 825K compactor incorporates Caterpillar’s Machine Drive Power (MDP) system—an exclusive feature that enables operators to consistently attain compaction specifications with minimal passes This results in low operating costs by saving time, fuel, rework expense, and machine hours.


Adding available technology for mapping and for storing and analyzing data creates an intelligent compaction system that provides comprehensive project management. Along with compaction intelligence, the 825K has the weight and power to take on the most difficult compacting and dozing chores, featuring massive structures for long-term durability and an operator’s environment that ensures optimum comfort, safety, and productivity.

Power train and structures

With a maximum operating weight of 78,326 pounds (35 528 kg), the 825K develops 405 net horsepower (302 kW) from its Cat C15 ACERT engine.

The C15 ACERT is available with emissions-control technology to meet either US EPA Tier 4Final/EU Stage IV for higher regulated countries or US EPA Tier 3/EU Stage IIIA equivalent emission standards for lesser regulated countries.



An Engine-Idle-Shutdown system conserves fuel by stopping the engine after a pre-set interval of idling, and a Delayed Engine Shutdown feature protects the engine by stabilizing operating temperatures before shutdown.

The drive train uses a 3F/3R Cat power-shift transmission featuring Single Clutch Speed Shifting, which assists in maintaining torque flow through the transmission during gear changes, resulting in smoother shifts and minimal power interruption—especially beneficial on uphill grades.

Cat 825K Specs

An integral lock-up torque converter provides direct-drive efficiency, speed, and fuel savings, while also significantly reducing drive-train heat. Additionally, an auto-shift system allows the machine to automatically upshift or downshift based on machine speed and torque, optimizing performance and thus saving fuel. This feature can be easily enabled or disabled on the soft keypad.

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