Mini Excavator & Mini Machine Glossary
This glossary explains the key terms, measurements, and components used in mini excavators and other compact machines. From platform classes and tail swing to pin centers, dipper gap, and hydraulic systems, each definition is written to help owners, operators, and mechanics understand how machines are built and how parts fit together.
Many compact machines are sold under different brand names with limited documentation. Clear terminology makes it easier to identify models, compare specifications, and verify compatibility before sourcing parts or performing repairs. Use this index to look up unfamiliar terms, confirm measurements, or better understand the specifications listed throughout the Almost Genuine database.
Browse key terms below, or jump directly to a term to learn more.
The four categories of compact equipment covered by this reference site. Each machine type serves a distinct role on the job site.
Platform classes group Chinese-manufactured mini excavators (CNE) by operating weight into families that share similar hydraulic architecture, control systems, and structural characteristics. A platform ID follows the format CNE-[class]-[drivetrain], e.g. CNE-15T-DP. The class code captures the weight tier, while the drivetrain suffix (G, GP, D, DP, EV) identifies the engine type. An optional -S suffix indicates expandable (telescoping) tracks.
The control system used by the operator to maneuver the excavator's boom, arm, bucket, and travel functions.
The type of hydraulic pump that powers the excavator's hydraulic system.
The design and movement capability of the excavator's main boom structure.
The operator station design that provides protection and comfort.
How much the rear of the excavator extends beyond the track width when rotating.
The track system that provides mobility and ground contact.
Track size is expressed in the format Width x Pitch x Links (e.g., 300x52.5x90). This notation describes the physical dimensions and configuration of the rubber or steel tracks.
Attachment patterns define the pin dimensions for connecting buckets, thumbs, and other attachments to the excavator. The format CN-DD-CCC-GGG encodes the key measurements needed for compatibility.