Corran's new 22-tonne excavator trims fuel burn 18% with a pump that listens to the bucket

Corran Equipment has taken the wraps off the CX220, a 22-tonne crawler excavator that the company says burns up to 18% less diesel than the model it replaces. The headline number does not come from the engine, which is largely carried over, but from the hydraulic system that sits between the engine and the bucket.

Conventional machines run their main pumps against a fixed map: the harder the operator pushes a joystick, the more flow the pump delivers. The CX220 instead reads pressure at each cylinder, joystick position, and boom angle roughly 200 times a second and adjusts pump displacement ahead of the movement. Corran calls it predictive flow, and the claim is that the pump spends far less time pushing oil over relief valves as heat.

Where the savings show up

In Corran's own testing, the largest gains came during truck loading and trenching, where the machine cycles between heavy digging and light swinging dozens of times an hour. Mass excavation with a full bucket on every pass showed smaller savings, closer to 9%. Independent field numbers are not yet available; three contractors in the US Midwest have pre-production units on site through the winter.

“Operators don't feel a difference in response, which was the whole point. If they had to change how they dig to save fuel, they wouldn't.”

Cab and service changes

The cab gains a 10-inch touchscreen, a factory 2D grade guidance option, and a rear-view camera ring that stitches four feeds into a single overhead view. Service intervals on hydraulic oil stretch to 6,000 hours, and the main filters have moved to a single bank reachable from ground level.

Pricing has not been announced. Corran says the CX220 will reach North American and European dealers in the first quarter of 2027, with a 25-tonne sibling to follow later in the year.