Truck mixer concrete pump
73 m³/h, 28 m | TWINSTAR 4Z28 SERMAC S.p.A.

The truck mixer pump TWINSTAR 4Z28 is the suitable choice as far as flexibility, dynamism and reliability are concerned. Thanks to the boom with 4 sections with "Z" folding type this model is suitable for small-medium jobsites generally for residential but also for urban building. The mixer pump has a minimum boom opening of 6,3 m only and pipeline Ø 100 mm and is suitable for urban works with difficult access thanks to front and rear stabilization sliding outriggers. In particular the pump can easily operate also in the city centres thanks to the perfect assembly on truck with 4 axles with wheelbase 4.300 mm. The pumping group with opening circuit with "S" valve "Twin ring"® is very reliable. This valve interfaces directly between 2 head bushings (that act as wear plate) to the chromed cylinders, from 73 m³/h and pressures till to 61 bar.

Main Features

Self supporting frame at high torsional absorption
Excellent assembly on 4 axles chassis
Hydraulically controlled separated stabilization: front and rear outriggers sliding type
The drum with elliptical bottom and geometrical volume 14,5 m³ has a high load capacity
Boom with 4 sections, "Z" folding type with pipeline Ø 100 mm. (4")
Boom control by proportional distributor
Minimum opening space 6.350 mm.
Concrete Capacity adjuster at distance
Valve S6 at high performances till 73 m³/h. continuous, silent, regular pumping
Proportional remote control with engine start up and emergency stop
Emergency remote control with serial cable
Upon request the coupling for continuous rotation is available