M21 Truck Mounted Concrete Pump

This concrete pump Zenith 4ZR21 City-Pump thanks to “ZR” folding boom with a minimum opening of 4.2 m and pipeline Ø 125 mm are the best solution for city areas of difficult access where medium size concrete pumps have difficulties in placing and operating boom. This version of City-Pump is the ideal solution for medium-small jobsites, works indoor and galleries or whatever needs a limited placing space. The 4ZR21 can easily operates also in the urban centres thanks to the assembly on truck 2 axles short wheelbase 3.850 – 4.000 mm.  With a total truck Length of only 7.8 metres and a 60 m³/h concrete output it’s the ideal pump for those tight on space sites.

Boom M21
Vertical Reach – 20.3m
Horizontal Reach – 16.3m
Depth of Reach – 12m
Unfolding Height – 4.2m
Number of sections – 4
Folding System Z R – Fold
Support width (Front) – 3.3m


Click here to download the M21 datasheet