Hydra Grapple Excavator Attachment For Site Grading & Foundation Work

CMP Attachments’ Hydra Bucket combines a high-capacity material bucket with the clamping grip of a grapple, giving grading crews one tool for moving dirt and one tool for leveling it. That dual function makes it a fit for foundation backfill, pad prep, and finish grading where precision matters as much as volume.

Precision Backfilling for Foundations and Slabs

Backfilling New Home Foundations & Garage Slabs

Backfill work sits close to poured walls, and one careless pass can crack a foundation. The Hydra Bucket lets operators place material in controlled amounts and grade it tight against the wall, hitting compaction targets without the risk that comes from swinging a full bucket load blind.

Foundation Site Prep for Pole Barns and Outbuildings

Leveling a pad for a pole barn or garage means grading, then regrading as soil settles. The Hydra Bucket’s tilt-and-grade function handles both the rough cut and the fine leveling, cutting out the second trip with a skid steer that most jobs would otherwise need.

Site Compliance and Erosion Control

Smoothing Construction Entrances for Compliance

SWPPP compliance depends on keeping mud off public roads. The Hydra Bucket smooths rock and dirt at the entrance pad efficiently, keeping the site inspection-ready without pulling a crew off other work.

Leveling Low Areas After Septic Installations

Septic installs leave behind mounded dirt and low spots. The Hydra Bucket restores the yard to a level, mowable grade in the same pass used to clean up the site.

The Hydra Advantage

A standard bucket needs a separate thumb to grab material, and even then, the heel doesn’t give operators much feel for fine grading. The Hydra Bucket grabs and grades with the same attachment, so there’s no swapping tools mid-job.

CMP builds the Hydra Bucket from high-strength steel, which keeps the attachment’s center of gravity balanced on the stick. Operators notice it most on finish passes: the bucket tracks predictably instead of fighting the grade, so a smooth, even surface takes fewer passes to achieve.