Home > PB33D-4R Column-Climbing Concrete Placing Boom — 32.6 m

PB33D-4R Column-Climbing Concrete Placing Boom — 32.6 m

The PB33D-4R is a four-section column-climbing concrete placing boom designed for internal climbing within high-rise structures. It provides a 32.6 m placement radius through an articulating R-fold boom, maintaining a continuous 360° slewing capability. A key distinction of this model is its integration of a larger Φ133 × 4.5 mm delivery pipeline, which reduces line friction and accommodates higher-volume concrete distribution compared to standard Φ125 mm lines.

Installed on a floor frame or within an elevator shaft or core wall, the boom distributes concrete across floor decks, shear walls, and columns when integrated with a stationary or line concrete pump via a vertical riser pipeline. The system operates on a 380V/50Hz electrical supply utilizing an 18.5 kW motor, driving a 30 MPa hydraulic system to maintain controlled articulation under demanding load conditions.

1. Four-section R-fold boom — Features four articulating arms for enhanced folding flexibility, allowing the delivery hose to navigate over and around structural obstructions.

2. Φ133 mm delivery pipeline — Utilizes a larger diameter pipeline to facilitate high-volume pumping and reduce material friction.

3. Reinforced hydraulics — An 18.5 kW motor and 30 MPa system pressure power the boom articulation and maintain stable movements under load.

4. Self-climbing mechanism — Ascends internally via floor or shaft frames using hydraulic cylinders, operating independently of external crane lifts between levels.

5. Gear slewing with cushion valve — Enables 360° continuous rotation with integrated cushioning for controlled acceleration and deceleration.

6. Integrated component mounting — Consolidates the hydraulic pump station and electrical control cabinet on the lower support structure.

7. Control configurations — Supported by electric-proportional remote, radio, or cable controls utilizing Omron and Schneider components.

8. Modular column options — Column lengths and climbing frames configure to specific structural geometries.

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Technial Parameters

Item	Unit	PB33D-4R
Performance
Max. Radius of Placing Boom	m	32.6
Free-Standing Height (to boom root joint)	m	21.6
Slewing Range	/	360°
Mode of Slewing	/	Gear Slewing
Circumstance Temperature	℃	-20 ~ 55
Power Supply (customisable)	/	380V / 50Hz
Boom (4-Section R-Fold)
1st Section — Length	m	9.65
1st Section — Articulation	°	0 ~ 89
2nd Section — Length	m	7.706
2nd Section — Articulation	°	0 ~ 180
3rd Section — Length	m	7.3
3rd Section — Articulation	°	0 ~ 180
4th Section — Length	m	7.72
4th Section — Articulation	°	0 ~ 180
Delivery Line
Delivery Pipeline Diameter	mm	Φ133 × 4.5
Delivery Hose Diameter	in × mm	5" × 3000
Power & Hydraulics
Motor Power	kW	18.5
Hydraulic Pressure	MPa	30
Hydraulic Oil (5℃–55℃)	/	HM46 anti-wear
Hydraulic Oil (-20℃–5℃)	/	HM32 anti-wear
Installation & Weight
Application Scenario	/	Floor / Shaft Climbing
Balance Arm	/	None
Total Weight	kg	20100
Max. Lifting Unit	kg	4800

Dimensions & Working Range

The working-range diagram maps the operational envelope of the PB33D-4R, detailing the 32.6 m horizontal radius across a 360° sweep and the vertical reach of the 4-section folding boom. The free-standing height of 21.6 m indicates the maximum vertical elevation above the support without external bracing. This data should be cross-referenced with structural layouts and climbing-frame specifications to plan core integration.

Applications

The PB33D-4R is a 32.6 m column-climbing placing boom equipped with a larger Φ133 mm delivery pipeline to support high-volume concrete distribution across dense structural layouts.

High-rise building cores and shear walls

Facilitates floor-by-floor concrete placement for high-rise towers, utilizing a 4-section fold to maneuver the delivery hose precisely between structural obstructions.

Elevator shafts and core walls

Utilizes shaft frame mounting for internal climbing within elevator shafts or core walls, optimizing space in restricted floor plate designs.

High-volume concrete placements

The enlarged Φ133 mm pipeline supports high-volume structural pours, maintaining efficiency when fed continuously by a stationary pump through the riser.

Bridge pylons and tall piers

Integrates with high-capacity concrete pumps to distribute concrete across elevated operational levels and tall bridge pylons.

FAQs

What distinguishes the PB33D-4R from the PB33A-4R-II?

The primary difference is the pipeline diameter and structural configuration. The PB33D-4R features a larger Φ133 mm delivery pipeline, bringing the total operational weight to 20,100 kg, which supports higher-volume placement with lower line friction. The PB33A-4R-II utilizes a standard Φ125 mm pipeline and weighs 17,540 kg.

How does it climb the building?

The system utilizes hydraulic cylinders to lift the boom assembly through floor frames or shaft frames. The boom elevates by its own standing height as the structure rises, operating independently of site cranes between pours.

Is the placing boom a concrete pump?

No. The placing boom functions strictly as the distribution terminal. A separate stationary or line concrete pump is required to drive concrete up a vertical riser pipeline to the boom.

Electric or diesel?

The unit is electrically driven, operating on a 380V/50Hz supply with an 18.5 kW motor. It requires external site power or a generator and does not feature an onboard diesel engine.

What weight and crane capacity should be planned for?

The maximum single lifting unit weighs 4,800 kg, determining the minimum capacity required for the site crane during initial assembly. The total operational weight is 20,100 kg.

What is supplied, and how is it shipped?

The standard configuration includes the placing boom, lower support, hydraulic pump station, control cabinet, and remote controls. Climbing columns, floor or shaft frames, and delivery pipelines are specified per project requirements.

Column-climbing placing boom series

The PB33D-4R is the 32.6 m model in the column-climbing placing boom series, which includes the 27.7 m PB28A-3R-II, the 31.7 m PB32A-3R-II, the 32.4 m PB33A-4R-II, and the 34.7 m PB35A-4R-E. The comprehensive B8 series provides six mounting configurations: column-climbing, formwork-climbing, mobile spider, wheeled mobile, lattice tower, and mobile boat booms. The column-climbing configuration is deployed for internal vertical progression within high-rise structural cores.

System integration with concrete pumps

The placing boom operates as the terminal distribution equipment in high-rise applications. Concrete is transported to the site and pumped vertically via a stationary or truck-mounted line pump through a fixed riser pipeline. The PB33D-4R interfaces with the riser to distribute concrete across floor decks, shear walls, and columns, completing the vertical and horizontal delivery sequence.

Pipeline diameter considerations

Unlike standard models utilizing Φ125 mm delivery pipelines, the PB33D-4R integrates a Φ133 mm pipeline. The larger diameter reduces material friction and pipeline pressure loss during operation, facilitating the distribution of high-volume concrete or mixes with larger aggregate sizes. This configuration is prioritized for substantial structural pours requiring sustained, heavy-duty distribution.