01 / MARKER
Boom
Sections, folding geometry, and the published operating reach.
- Boom sections
- 4
- Folding type
- ZR-fold
- Maximum vertical reach
- 21.2 m / 69′ 7″
- Maximum horizontal reach
- 17.2 m / 56′ 5″
- Unfolding height
- 3.9 m / 12′ 10″
HR CONCRETE PUMPS
HR21-4ZR
21 m 4-section ZR-fold concrete boom pump
- Vertical reach
- 21.2 m / 69′ 7″
- Horizontal reach
- 17.2 m / 56′ 5″
- Rated output
- 90 m³/h / 118 yd³/h
FULL MODEL DATA
Full specifications.
Metric and imperial reference values extracted from the supplied sheets.
All 28 specifications shown.
| Boom | |
|---|---|
| Maximum vertical reach | 21.2 m / 69′ 7″ |
| Maximum horizontal reach | 17.2 m / 56′ 5″ |
| Boom sections | 4 |
| Boom folding | ZR-fold |
| Unfolding height | 3.9 m / 12′ 10″ |
| General | |
| Delivery pipe size · inner diameter | 125 mm / 5 in |
| Rotation | 370° |
| End hose length | 3 m / 9′ 10″ · 4 m / 13′ 1″ |
| End hose size · inner diameter | 125 mm / 5 in |
| Front outrigger spread | 3.76 m / 12′ 4″ |
| Rear outrigger spread | 2.88 m / 9′ 5″ |
| Hydraulics and pumping | |
| Rated output · rod side | 90 m³/h / 118 yd³/h |
| Rated output · piston side | 56 m³/h / 73 yd³/h |
| Concrete pressure · rod side | 70 bar / 1,015 psi |
| Concrete pressure · piston side | 112 bar / 1,624 psi |
| Concrete cylinder size · inner diameter | 230 mm / 9 in |
| Stroke length | 1,400 mm / 55 in |
| Drive cylinder size · inner diameter | 130 mm / 5 in |
| Rod size | 80 mm / 3 in |
| Number of strokes · rod side | 26 / min |
| Number of strokes · piston side | 16 / min |
| Hopper capacity | 600 L / 159 US gal |
| Hydraulic system | Open-loop |
| Hydraulic system pressure | 350 bar / 5,076 psi |
| S-valve | D200 × D180 (S2018) |
| Main pump | A11VLO260 (Rexroth) |
| Water tank capacity | 400 L / 106 US gal |
| Water pump pressure | 20 bar / 290 psi |
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Technical data are reference values and may change with the chassis or product configuration. Confirm final specifications, availability, and suitability before purchase. Outrigger spreads do not describe every clearance needed on site.
MACHINE ANATOMY
Read the machine at a glance.
Select a numbered marker to highlight that system and see the published data for this model.
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
- 90 m³/h / 118 yd³/h
- Rated output · piston side
- 56 m³/h / 73 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
- 26 / min
- Strokes · piston side
- 16 / min
- S-valve
- D200 × D180 (S2018)
04 / MARKER
Outriggers
The footprint and stabilizer dimensions used to plan setup.
- Maximum setup width
- 3.76 m / 12′ 4″
- Front outrigger spread
- 3.76 m / 12′ 4″
- Rear outrigger spread
- 2.88 m / 9′ 5″
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
- A11VLO260 (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.
The water tank is not separately outlined in this 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.
- 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
TECHNICAL DOCUMENTS
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