4ZR20

The SERMAC 4ZR20 City-Pump is fitted with a "ZR" folding boom for ultimate versatility. With a minimum opening height of only 4,2 m and pipeline of Ø 125 mm, this pump provides the ideal solution for placing concrete in city centres or confined spaces where medium size concrete pumps would have difficulties in accessing and setting up. The 4ZR20 City-Pump is perfect for medium-small jobsites, working inside or any concrete pumping that requires a limited ground space to set-up. The 4ZR20 can easily operate in urban areas thanks to the assembly of the truck on a 2 axle wheelbase of 3,690 – 3,900 mm. The pumping group G9 at open circuit hydraulic system model AG9M10-100-80 offers reliability and high performance theoretical concrete output up to 100 m³/h and pressure up to 80 bar.

Main features

Concrete pump designed and made by SERMAC
Structural analyses with Finite Element Method (FEM)
Pump frame designed for high torsion rigidity
Suitable for assembly on 2-axle trucks
Boom 4-stage, ZR-folding type
Pipeline Ø 125 mm (5”)
Main components sourced from genuine European manufacturers
Pumping unit with open hydraulic system
Concrete S-valve Ø 9”
Ideal for working in tight spaces
Total mass on ground < 16 t

Standard dotation

X-type front outriggers and fixed diagonal type rear outriggers
Driven by gear box (supplied separately)
Concrete pipeline made in twin-wall with chromium carbide inserts
Boom control by proportional distributor “Load Sensing”
Two sets of radio remote controls provided with 2-speed proportional boom control
High strength wear parts (S valve, wear plate, compensation ring)
Automatic hopper greasing unit and manual back-up system
Safety device on hopper door and hopper grate
Remote controlled electric vibrator on hopper grate
Aluminium hopper cover
Water pump (60 l/min, 30 bar)
Water tank capacity 650 l
Lights for hopper lighting, LED
Metal bin for accessories beside hopper
Warning horn
Accessories for cleaning and maintenance
Declaration of conformity (user and maintenance manual)