Used Caterpillar 312B Excavators For Auction

The Caterpillar 312B is a hydraulic excavator in Caterpillar's 12-ton class, designed for general earthmoving, trenching, utility work, and site preparation. It is typically equipped with a diesel engine, hydraulic boom and stick system, and a standard excavator undercarriage for tracked mobility and stability on uneven ground. The 312B is known for its compact size relative to larger excavators, making it suitable for confined job sites while still providing digging depth, lifting capability, and attachment versatility. Common applications include construction, landscaping, roadwork, and material handling. Availability of configurations may vary by market, year, and serial number.