Home > PB17D-3R Mobile Concrete Placing Boom — 17 m on a Wheeled Frame

PB17D-3R Mobile Concrete Placing Boom — 17 m on a Wheeled Frame

The PB17D-3R is a mobile concrete placing boom built on a wheeled frame. It carries the same 17 m three-arm boom as the TRUEMAX spider model, but instead of standing on outrigger legs and being craned between positions, it sits on a rolling frame that can be towed or dragged to the next spot within the site. That single difference defines it: the PB17D-3R is repositioned without a crane, so the boom can simply follow the pour as work moves across a slab or along a structure.

This makes it the placing boom for jobs where a crane is not always free to shift the boom, or where the work advances along a line and the boom needs to travel with it. It places concrete over a 17 m radius through a fully hydraulic R-fold boom, slews a full 360° on a self-locking worm-drive turret, and is run by radio or cable remote. Standing just 2.9 m tall overall, it moves easily around and under site obstructions. Like every placing boom it is fed by a separate concrete pump, runs on a 380V/50Hz supply with a 5.5 kW motor, and is built and tested at TRUEMAX in Haining to ISO 9001:2015 and CE standards, within a line exported to over 120 countries.

1. Wheeled frame, no crane to relocate — The frame body rolls and can be towed or dragged to its next position within the site, so the boom is repositioned without tying up a crane.

2. Follows the pour — Because it moves on its own wheels, the boom is shifted freely as placing needs change, staying where the concrete has to go — useful on slabs and work that advances along a line.

3. Three-arm R-fold hydraulic boom — Three fully-hydraulic R-fold arms open to a 17 m placing radius and fold compactly for towing and transport.

4. Full 360° slewing — The boom rotates a complete circle to cover the area around each stopping point.

5. Self-locking worm-drive slewing — A turbo worm-gear drive turns smoothly and holds the boom steady at any angle, well suited to a frequently-moved boom.

6. Radio and cable remote control — Two operating modes let one operator place concrete and reposition the boom from the clearest vantage point.

7. Low 2.9 m overall height — The compact rolling profile moves easily around the site and under low obstructions between pours.

8. Quality components — Hydraulic and electrical parts from well-known international brands for stable, reliable operation, on a 380V/50Hz, 5.5 kW drive.

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Technial Parameters

Item	Unit	PB17D-3R
Performance
Max. Radius of Placing Boom	m	17
Overall Height	m	2.9
Slewing Range	/	360°
Mode of Slewing	/	Turbo Worm Drive
Application Scenario	/	Mobile (Wheel Type)
Circumstance Temperature	℃	-20 ~ 55
Power Supply (customisable)	/	380V / 50Hz
Boom (3-Section R-Fold)
1st Section — Length	m	7.1
1st Section — Articulation	°	0 ~ 86
2nd Section — Length	m	5.5
2nd Section — Articulation	°	0 ~ 180
3rd Section — Length	m	4.5
3rd Section — Articulation	°	0 ~ 180
Delivery Line
Delivery Pipeline Diameter	mm	Φ125 × 4.5
Delivery Hose Diameter	in × mm	5" × 3000
Power & Hydraulics
Motor Power	kW	5.5
Hydraulic Pressure	MPa	25
Hydraulic Oil (5℃–55℃)	/	HM46 anti-wear
Hydraulic Oil (-20℃–5℃)	/	HM32 anti-wear
Weight
Total Weight	kg	7950
Max. Lifting Unit	kg	5850

Dimensions & Working Range

The working-range diagram shows the 17 m radius swept through 360° from each stopping point, plus the vertical fold of the three arms. At 2.9 m overall height the wheeled unit clears low obstructions as it moves. Plan the boom's path so successive positions overlap, letting it roll along the work and cover a large area in stages without a crane lift.

Applications

The PB17D-3R suits area and linear pours where the boom should travel with the work rather than wait for a crane to move it.

Floor slabs and decks

On suspended slabs and ground floors, the wheeled boom is rolled from bay to bay as each section is poured, covering a large floor without crane time for repositioning.

Linear and advancing structures

Work that progresses along a line — channels, long foundations and similar — suits a boom that tows along with the pour, keeping the placing point at the working face.

Sites with limited crane availability

Where the tower or mobile crane is committed to other lifts, the PB17D-3R moves itself on its frame, so concrete placing does not wait on crane time.

Repeated, frequent repositioning

Jobs that need the boom moved often through the day benefit from a unit that simply rolls to the next spot, cutting the handling between pours.

FAQs

How is the PB17D-3R different from the PB17B-3R-II spider boom?

They share the same 17 m three-arm boom and worm-drive slewing, but they move differently. The PB17D-3R sits on a wheeled frame and is towed or dragged to its next position, so no crane is needed to relocate it. The PB17B-3R-II stands on an inclined-outrigger base and is lifted by crane between positions, which keeps it lighter. Choose the PB17D-3R to roll the boom around without a crane; choose the PB17B-3R-II where a crane moves it and the lightest possible lift unit matters.

Is it truck-mounted or self-driving?

No. Despite the “mobile” name, the PB17D-3R is not a self-driving truck — it is a placing boom on a wheeled frame that is towed or dragged to position within the site. It has no road chassis or engine of its own; the boom itself runs on electric power and the unit is moved by towing.

How is it moved around the site?

On its own wheels. The frame body can be dragged or towed to the next placing position as needed, which is the point of the wheeled design — the boom follows the pour without a crane lift between positions.

Is the placing boom a concrete pump?

No — it distributes concrete, it does not pump it. A separate stationary or line concrete pump feeds concrete through a pipeline to the boom, and the PB17D-3R then spreads it across the area. The two are used together.

Is it electric, and how heavy is it?

It is electric — a 380V/50Hz supply with a 5.5 kW motor, voltage and frequency customisable, with no on-board engine. Total weight is 7,950 kg on the wheeled frame; if it must be craned (for example onto a deck), the heaviest single lifting unit is 5,850 kg.

What is supplied, and how is it delivered?

The package is the boom on its wheeled frame, the hydraulic and control system and the remote. Delivery line, hose, spares, installation and commissioning are quoted to your project. Tell us your site layout and how you plan to move the boom and we will confirm the configuration and lead time.

Wheeled or craned — two ways a mobile boom moves

TRUEMAX offers two non-climbing 17 m placing booms that move in different ways. The PB17D-3R rides on a wheeled frame and is towed to its next position, so it relocates without a crane — ideal where the boom must follow the pour or where crane time is scarce. The PB17B-3R-II spider stands on outrigger legs and is craned between positions, which keeps it light to lift. Same reach and boom; the choice is whether you would rather roll the boom or lift it.

How a mobile boom fits the pour

Concrete reaches the slab from the batching plant and truck mixer through a stationary or line pump that runs a pipeline to the boom. The placing boom turns that pipe outlet into reach across the working area, so one operator places concrete by remote instead of the crew dragging end-hose. With the PB17D-3R, when the area is done the unit is simply towed to the next position and the line extended to follow — keeping the pour moving without waiting on a crane.

When to choose a wheeled mobile placing boom

A wheeled mobile boom is the right pick when the boom needs to travel with the work and a crane cannot always be spared to move it — large slabs poured bay by bay, linear structures, and busy sites where crane hours are precious. Where a crane is readily available and the lightest lift unit is wanted, a spider boom suits better; where the structure is tall and the boom must climb, a column-climbing boom is the answer. The PB17D-3R is the self-mobile option in the TRUEMAX range, built to roll to the next pour on its own frame.