Acerca de · Caterpillar 318Resumen
The Caterpillar 318 is a mid-size hydraulic excavator in the 20-tonne class, purpose-built for general earthmoving and site-development work. Operating at 19,206 kg with an engine output of 117 hp and a rated bucket capacity of 0.91 m3, it sits at the productive centre of the medium excavator segment. The machine reflects Caterpillar's established design priorities of structural durability and broad attachment compatibility within this weight class.
Aplicaciones típicasDónde se utiliza esta máquina
Excavators in the 20-tonne class are routinely deployed on foundation excavation, utility-trench work, road-base preparation, and bulk-material handling at medium-scale civil and construction sites. The 0.91 m3 bucket capacity makes the machine well suited to cycle-intensive digging cycles where balancing payload and swing speed is critical. Site-clearance, pond-dredging, and pipeline-installation contractors regularly specify machines of this operating weight as a primary dig unit.
Inspección del mercado de segunda manoQué hay que comprobar antes de comprar
Before purchasing a used machine in this class, commission an independent hydraulic pressure test across all functions and verify that swing, boom, stick, and bucket circuits meet manufacturer specifications. Inspect the undercarriage closely: track-shoe thickness, roller and idler wear, and final-drive seal condition are high-cost renewal items and visible wear is a direct negotiating factor. Review all available service records and confirm that scheduled filter and fluid intervals were observed, as gaps in documentation raise uncertainty about internal component condition. Check the upper structure for weld repairs or frame cracks at the boom foot and slew-ring area. Where a machine is offered with attachments, confirm hydraulic-line compatibility and that any quick-coupler circuits are fully functional. A pre-purchase inspection by a qualified Cat technician is advisable before commitment.
Mercado actualPosición de precios
Within the 20-tonne excavator class the Caterpillar 318 is directly cross-shopped against the Hitachi ZX200 and the Volvo EC200. The Hitachi ZX200 is commonly associated with hydraulic system refinement and is a frequent reference point for buyers prioritising cycle-time efficiency. The Volvo EC200 is typically evaluated for its operator-environment standards and fuel-consumption profile. The Caterpillar 318 positions itself on the strength of the wider Cat dealer and parts network and alignment with mixed Cat fleets. Within the used market, the attributes that move a machine up or down within its band are accumulated service hours, full service-history documentation, undercarriage condition, the presence of a quick-coupler or additional attachment lines, and overall structural condition including boom, stick, and upper-frame integrity. Configuration choices such as short-arm versus long-arm stick and the inclusion of a second auxiliary circuit also affect where a unit sits relative to comparable hours machines.