Caterpillar S80

The Caterpillar S80 is a hydraulically powered mobile scrap and demolition shear, a work tool rather than a self-propelled machine: it carries no engine of its own and draws all its cutting force from a compatible excavator carrier's hydraulic system. Caterpillar catalogued it in the mid-to-late 1990s as the second-largest member of its legacy S25/S30/S40/S50/S80/S130 shear lineup, sized above the S50 and below the S130. As a basic tool body it weighs approximately 7.9 t (17,416 lb), with an overall length near 4,650 mm (183.1 in) and a jaw opening around 820 mm (32.3 in), and is matched to excavators in roughly the 40-80 t (44-88 US ton) class. Factory literature splits this legacy line into a fixed head under the base model number and a continuously-rotating head under the base number plus 200, which would make the S80 the straight head and the S280 its rotating counterpart - though parts groupings documented for at least some S80 units include a rotator mounting and cylinder group, so configuration should be confirmed against the specific unit's own parts manual rather than assumed from the model number alone. It mounts to the carrier as a second member at the boom, in place of the stick, or as a third member at the stick tip like a bucket or grapple, with an optional quick coupler for third-member use.

Caterpillar's legacy S-family shears, including the S80, have since been superseded in current production by the S2000-series straight shears and S3000-series rotating shears, which carry forward the same boom- or stick-mount philosophy with bolt-on, field-replaceable piercing tips and cutting edges. No S80 units are sold new today; what remains is a working population on demolition and scrap-processing sites, typically paired with older excavators in its matched weight class. Because Caterpillar has reused this model designation elsewhere - a separate, currently sold S80 S Type excavator coupler exists in today's work-tool catalog under the same number, and later B- and C-series shears use different blade and bracket hardware entirely - correctly identifying a used S80 as this legacy scrap shear, and not a coupler or a newer-generation shear, matters for parts sourcing. Blade sets, pivot pins, bushings, and cylinder seal kits for this vintage are not interchangeable with the current S2000/S3000 lines or with the unrelated coupler product.

Below: full specifications, fluids & capacities, the factory service schedule, common service parts, verified fault codes, what owners discuss, attachment guidance, the complete assembly directory, and a serial-number reference. Complete parts lists with full OEM part numbers, exploded diagrams, quantities, and fitment data are available free in Heavy Parts AI.