CW’s new Kubota U50-5 fleet: utilisation and site-planning notes for engineers
Reviewed by Tom Sullivan

First reported on The Construction Index
30 Second Briefing
CW Plant Hire has expanded its fleet with 20 additional Kubota U50-5 compact excavators, each weighing 4,775 kg and offering a 3,370 mm maximum digging depth and 5,850 mm forward reach. The five-tonne, zero tail swing machines, powered by 40.4 kW diesel engines and equipped with full-width dozer blades for added lifting stability, target confined urban construction sites. Supplied by Boss Plant Sales, the deal takes CW’s Kubota count to around 300 within a UK fleet of more than 1,000 excavators ranging from 800 kg to 22 tonnes.
Technical Brief
- CW Plant Hire operates more than 1,000 excavators across operating weights from 800 kg to 22 tonnes.
- Around 300 units of that fleet are Kubota machines, spanning micro, 1.5 t, 3 t, 5 t and 8 t classes.
- All Kubota units, including the new U50-5s, are supplied and supported by Hertfordshire dealer Boss Plant Sales.
- CW and Boss Plant Sales have collaborated since 2020, with dealer support covering the full Kubota model range.
- Asset manager Gary Gay cites Kubota’s reliability and after-sales back-up as key to repeat procurement decisions.
- Market demand for the U50-5 in the UK is described as “very strong” due to machine flexibility in use.
- Concentration of multiple weight classes under a single OEM simplifies attachment compatibility, operator training and maintenance logistics for hire operations.
Our Take
A Kubota fleet of around 300 machines spread across roughly 30 Charles Wilson Engineers branches suggests CW Plant Hire is standardising a significant portion of its compact excavator offering around a single OEM, which typically simplifies maintenance, parts stocking and operator training for UK contractors.
The 800 kg to 22 tonne excavator range in CW Plant Hire’s UK fleet positions the new 5 tonne Kubota U50-5 units in a sweet spot for urban and residential infrastructure work, where transport limits, access constraints and demand for low ground pressure are key selection drivers.
With the Charles Wilson–Boss Plant Sales relationship dating from 2020, repeat orders of 5 tonne class Kubota units indicate that post-pandemic fleet refresh in the UK is still skewed towards compact and mid-size excavators rather than heavier earthmoving classes in our recent Infrastructure coverage.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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