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Boom Specification – Roll-and-Z-Fold Design
| Height & Reach | 21X-4R | |
|---|---|---|
| Vertical reach | 20.5 m | 67'3″ |
| Horizontal reach | 17.2 m | 56’5″ |
| Reach from front of truck | 14.5m | 47' 7" |
| Reach depth | 11.6 m | 38’1″ |
| Unfolding height | 4.4 m | 14′5" |
| Boom Section Articulation | |
|---|---|
| 1st section articulation | 90 ° |
| 2nd section articulation | 180 ° |
| 3rd section articulation | 240 ° |
| 4th section articulation | 247 ° |
| Boom Section Length | ||
|---|---|---|
| 1st section length | 5.7 m | 18'8” |
| 2nd section length | 3.8 m | 12’6″ |
| 3rd section length | 3.8 m | 12’6″ |
| 4th section length | 3.9 m | 12'10" |
| General Specs | ||
|---|---|---|
| Pipeline size (ID) metric ends | 125 mm | 5″ |
| Rotation | 360 degree non-continuous swing | |
| End hose – length | 3 m | 10’ |
| End hose – diameter | 125 mm | 5″ |
| Front Outrigger Spread: Swing out, telescope & extend down | 4 m | 13'1″ |
| Rear Outrigger Spread: Swing & extend down | 2.9 m | 9’6″ |
Pump Specifications
| Output | rod side piston side | 93 m3/hr 58 m3/hr | 122 yd3/hr 76 yd3/hr |
| Pressure | rod side piston side | 92 bar 148 bar | 1,334 psi 2,147 psi |
| Material cylinder diameter | 200 mm | 8″ | |
| Stroke length | 1400 mm | 4’7” | |
| Strokes | per minute rod side piston side | 1 minute 31 19 |
|
| Volume Control | Zero to full | ||
| Hydraulic system pressure | 350 bar | 5,075 psi | |
| Differential cylinder diameter | 130 mm | 5″ | |
| Rod diameter | 80 mm | 3″ | |
| Maximum size aggregate | 60 mm | 2.4″ | |
21-Meter R-Fold Concrete Boom Pumps
The 21X-4R concrete boom pump is the ideal choice for residential and commercial construction job sites requiring less range and more mobility. This 21-meter concrete boom pump features a four-section, roll and fold boom that provides maximum versatility. The pump is designed to unfold and open in tight spaces and can unfold under a 19 foot ceiling height, making it perfect for working in and around existing structures as well as under bridge decks and other overhead obstructions.
What Benefits Does the 21X-4R Concrete Boom Pump Provide?
If you’re in the construction business and need a fast, efficient method for pouring concrete, our 21-meter concrete boom pump offers the following benefits:
- Designed with a low unfolding height of just 19-ft. The versatile 21X-4R makes life easier for operators working in and around existing structures with overhead obstructions.
- The ability to move the boom via the remote-control unit enables faster, easier boom placement. Your drivers won’t have to constantly move the vehicle around the worksite and your workers won’t need to rake or wheel concrete several feet from the truck to the exact location.
- If you frequently pour concrete in residential housing subdivisions or neighborhoods that have high privacy walls, the boom’s maneuverability will allow you to reach narrow areas with ease, simplifying the pumping and pouring process.
- Advanced closed-loop hydraulic system ensures smooth, efficient pump movement and operation.
Choose from multiple chassis options to fit the pump onto vehicles from leading manufacturers including Mack, Western Star, Freightliner and Kenworth.
