A Liebherr HS 895 HD duty-cycle crawler crane fitted with clamshell bucket is carrying out excavation for largest public works contract ever let by the City of Portland. Nov 9, 2009.

The crane had only 600 parts, with a mere 15 recommended for replacement due to wear. It had no cab, and could be equipped with a hydraulic clamshell bucket with 10 tons of digging pressure or a ...

A cableway and self-loading skips that resembled dragline buckets followed; then, under the trade name Brownhoist, he developed the first clamshell type unloader, with a 1 1/2-ton bucket suspended ...

A clamshell dredge bucket system involves a single bucket, the crane, and the cables used to operate the clamshell. The dredge operates by lifting the bucket, ...

Intended to be used for canal maintenance, including debris removal, such as trees and other floating (or not floating) debris, some dredging with a clamshell bucket, and servicing of lock ...

Crane-Attachment-Manufacturer News: ... Today, this focus is highlighted by Mack’s expanding range of clamshell buckets and grabs for the stevedoring industry, ...

In addition, Anvil currently has a diesel-powered clamshell bucket in production. This bucket will use many of the same concepts and parts as the grapple. Anvil's diesel powered hydraulic scrap ...