HR28-4Z

01 / MARKER

Boom

Sections, folding geometry, and the published operating reach.

Boom sections

4

Folding type

Z-fold

Maximum vertical reach

27.8 m / 91′ 2″

Maximum horizontal reach

23.8 m / 78′ 1″

Unfolding height

6.5 m / 21′ 4″

02 / MARKER

Turret

The slewing structure and published rotation range.

Boom rotation

370°

03 / MARKER

Pumping unit

Published output, pressure, cylinder, and stroke performance.

Rated output · rod side

120 m³/h / 157 yd³/h

Rated output · piston side

75 m³/h / 98 yd³/h

Concrete pressure · rod side

70 bar / 1,015 psi

Concrete pressure · piston side

112 bar / 1,624 psi

Concrete cylinder

230 mm / 9 in

Stroke length

1,400 mm / 55 in

Strokes · rod side

34 / min

Strokes · piston side

21 / min

S-valve

S2018 (D200 × D180)

04 / MARKER

Outriggers

The footprint and stabilizer dimensions used to plan setup.

Maximum setup width

6 m / 19′ 8″

Front outrigger spread

6 m / 19′ 8″

Rear outrigger spread

2.8 m / 9′ 2″

05 / MARKER

Hopper

The published receiving-hopper capacity.

Hopper capacity

600 L / 159 US gal

06 / MARKER

Hydraulics

The hydraulic circuit and principal drive components.

Hydraulic system

Open-loop

System pressure

350 bar / 5,076 psi

Main pump

A11VLO190 (Rexroth)

Drive cylinder

130 mm / 5 in

Rod size

80 mm / 3 in

07 / MARKER

Water system

On-machine water capacity and supporting cleanup pressure.

This component is not separately identified in the supplied side drawing.

Water tank capacity

400 L / 106 US gal

Water pump pressure

20 bar / 290 psi

08 / MARKER

Delivery pipeline

Published pipe and end-hose dimensions for concrete delivery.

This component is not separately identified in the supplied side drawing.

Delivery pipe · inner diameter

125 mm / 5 in

End hose length

3 m / 9′ 10″ · 4 m / 13′ 1″

End hose · inner diameter

125 mm / 5 in