Following on from the new 6-, 8-, 9- and 10-tonne midi excavators introduced last year, the new JCB machines have operating weights in the range 4.8 tonnes to 5.7 tonnes. They are available in conventional, reduced and zero tailswing configurations.
The four new models are: the 48Z-1 (pictured below), which replaces the previous 8045Z/8050ZTS; the 51R-1 to replace the 8050ZTS/RTS; the 55Z-1, which takes over from the 8055ZTS/RTS; and a completely new 57C-1 model (above). All four have 100% steel bodywork and a four-plate dipper arm construction.
The dig end is 100% bushed, leading to extended 500 hour greasing intervals.
JCB has also revised the pin pick-up points to work with various bucket brands, while optional hydraulic or manual quickhitches can be specified for faster attachment changeover. JCB has also developed a new range of ECO buckets, with a redesigned profile for easier filling and improved material retention.
The excavators have a redesigned dig end, with a longer main boom and shorter dipper arm, to provide up to 5% greater dump height for easier truck and site dumper loading. The upgraded hydraulic system also delivers up to 9% more bucket tearout force and 2% higher dipper arm tearout, boosting performance and productivity.
The new machines get their global launch at the Bauma Fair in Munich in April but UK buyers can get first sight of them at the Executive Hire Show in Coventry next week.
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