Designed to perform in demanding civil and building applications, this new mini excavator range has undergone major advances in terms of overall functionality, since the company’s first entry into this product segment back in 1998.
Since then there have been successive model series changes and a steadily expanding global machine population. In addition to the contracting, industrial and municipal markets, Cat mini excavators are popular choices for plant hire fleets, especially given their road-legal towing weight and overall versatility. A popular mid-range choice within Caterpillar’s mini line-up for the Southern African market is the 5.5 tonne operating weight Cat 305.5E model, which is supplied locally in compact radius configuration. “Compact radius models are ideally suited to working in restricted spaces, such as inside buildings and in urban areas for applications that include demolition, road rehabilitation works, and trenching and pipe laying for telecommunications and underground water reticulation services,” explains Barloworld Equipment product marketing manager Desigen Naicker.Features
The mid-range excavator is equipped with a C2.4 engine with a rated net power of 32.9 kW at 2 400 rpm (ISO 9249) and has an operating weight of approximately 5 415 kg when fitted with a FOPS cab, which is standard for this market. On the go, automatic two-speed travel simplifies operations. All E-Series models feature high digging forces, fast cycle times and excellent stability, with operation via pilot controls. An advanced load-sensing system provides responsive performance, whilst boom and cylinders incorporate end damping to reduce shock loading and bucket spillage.
Depending on whether the machine is fitted with a standard or long stick, the machine can excavate down to a depth of approximately 2 330 mm and 2 730 mm, respectively. Digging forces are 28.9 kN for standard and 24.8 kN for long-stick applications.
Fitted with a wide range of work tools, such as vibratory trench compactors, thumbs for pipe handling, augers, metal-cutting shears and hammers, the mini excavators transform into high-production multipurpose machines, with the option of specifying either a mechanical or hydraulic quick-coupler system. E-Series machines include both a single-direction auxiliary circuit for use with a hammer, and a two-way auxiliary hydraulic circuit for bi-directional work tools such as augers or angling buckets. A wide range of bucket choices is available, extending from general purpose to landscaping. A distinctive feature across the board is their rotational capabilities, in excess of 200 degrees. This ensures good spoil retention at height, such as during truck loading, plus easier flat back trenching ability.
