A man working at a Bronx recycling plant was crushed to death Saturday by part of a bulldozer he was trying to repair, police said.

The 47-year-old victim was struck by the excavator bucket shortly before 1:30 p.m. at New York Recycling, a concrete-recycling plant on Exterior Street near East 146th Street in Mott Haven, authorities said.

Police said Rene Chavarria, 46, was welding the suspended bucket inside a garage on the property when it somehow fell, crushing his body from the torso up, police said.

The Guatemala native was wearing a hardhat at the time, authorities said.

Medics and cops responded to the scene, but the victim could not be saved.

Devastated co-workers and family members could be seen consoling each other outside the Mott Haven location following the tragic accident.

It was not immediately clear what caused the bucket to collapse, but police said there was no criminality suspected.

A spokesperson for the Department of Buildings said the location was not an active construction work site.

The heavy machinery is used for the company’s everyday functions, the agency added.

New York Recycling LLC did not respond to a request for comment.

The Office of the Chief Medical Examiner will determine the official cause of death.