Vacuum Laying Devices

How a vacuum laying device works

A vacuum laying device lifts a building element by creating negative pressure between the rubber seal of a suction plate and the surface of the material. The pump draws air out from under the plate, and the element is pressed against it by atmospheric pressure acting from the outside. No magnet or adhesive is involved — the load capacity comes purely from the pressure difference, which is why it depends on the suction plate area and how well the seal contacts the surface.

This is what separates it from a mechanical device: a mechanical clamp grips the element with jaws from the sides, so it needs free space around it and a certain minimum element height. A vacuum device grips from above, which allows slabs to be laid tight against one another with no gap left for jaws, and handles low elements — patio slabs a few centimetres thick that jaws simply cannot grip.

The condition is a surface smooth enough to seal against. Concrete, stone, ceramic slabs and glass are handled without trouble; heavily porous or strongly textured materials call for the right suction plate, and sometimes a seal with greater compliance.

Classes of vacuum laying device — capacity and power source

The key selection criterion is the mass of the heaviest element to be lifted, together with how the pump is powered. The NORWIT.PL range covers three classes.

Hand-held units are operated by one person with no power source at all — the vacuum is generated by a lever or hand pump and held mechanically. Battery models run an electric pump on 12 V and will work a full day on one charge. Petrol units are mounted on a carrier machine — these are excavator attachments rather than hand tools.

Probst vacuum laying devices available at NORWIT.PL

Below is a cross-section of the range with the parameters that drive the choice. Detailed data, suction plate sizes and equipment are on the product pages.

The GREENLINE line covers models with an electric drive in place of a combustion engine — they run emission-free and much more quietly, which matters for work inside buildings, in tunnels and in low-emission zones. At an own weight of 35 kg, the STONEMAGNET SM-600 lifts elements up to 600 kg — more than seventeen times its own mass.

Matching a vacuum laying device to the job

Selection starts with the mass of the heaviest element on site, not the average one. A concrete slab of 100 × 100 × 8 cm weighs about 190 kg, while a road slab of 300 × 150 × 15 cm exceeds 1,600 kg. The first calls for a battery unit in the SM-600 class, the second already requires a petrol-driven POWERJET.

The second criterion is the carrier machine. Units up to 150 kg are handled by a single operator manually or with a light jib crane, while models from 600 kg upwards are slung under an excavator, loader or crane — you then need to check the machine's capacity at full reach, including the own weight of the device itself (35 kg for the SM-600, 132 kg for the PJ-1650).

The third factor is the material surface. Vibro-pressed concrete, cut stone and ceramic slabs hold well; heavily textured, porous or deeply patterned elements need a matched suction plate — available versions are in vacuum laying device accessories.

Frequently asked questions — vacuum laying devices

How does a vacuum laying device for block paving work?

A vacuum laying device lifts an element by creating negative pressure under the rubber seal of a suction plate. The pump draws out the air and the element is pressed against the plate by atmospheric pressure from outside — capacity therefore follows from the suction plate area and the quality of the seal, not from any clamping force. In practice hand-held units carry 25–50 kg, battery units from 150 to 600 kg, and petrol units up to 1,650 kg.

How does a vacuum device differ from a mechanical clamp?

A mechanical clamp grips the element with jaws from the sides, so it needs clear space around it and a minimum element height — typically between 60 and 200 mm of internal height. A vacuum device grips from above by suction, which lets it lay slabs tight against one another and handle flat elements such as patio slabs a few centimetres thick. The mechanical option is cheaper and simpler; the vacuum one is the only choice for large-format and low elements.

What capacity of vacuum laying device should I choose?

Capacity is matched to the heaviest element on site, not the average one. A concrete slab measuring 100 × 100 × 8 cm weighs around 190 kg, which sits in the 600 kg class, while a road slab of 300 × 150 × 15 cm exceeds 1,600 kg and calls for a petrol unit. Always leave a margin — manufacturers state the working load limit for optimal conditions, and a wet or dusty surface reduces real capacity.

Will a vacuum device lift paving blocks?

A single paving block is easier to lift with a mechanical clamp, whereas a vacuum device comes into its own with elements offering a large smooth surface: pavement slabs, patio slabs, large-format units and road slabs. Blocks laid in courses are instead handled by multi-grip laying clamps that move a whole layer at once. Contact area decides — the smaller and more textured it is, the less the vacuum can hold.

What is the GREENLINE line in Probst devices?

GREENLINE denotes models with an electric drive instead of a combustion engine — for instance the STONEMAGNET SM-600 GREENLINE, rated at 600 kg and powered from 12 V. They run without exhaust fumes and far more quietly, which suits work inside buildings, in tunnels, in halls and in low-emission zones. Petrol versions remain the choice where charging batteries is not practical.

Do I need an excavator for a vacuum laying device?

Units rated up to 150 kg, such as the VACUUM-POWER-HANDY VPH-150 at an own weight of 16.5 kg, are handled by one operator manually or with a light jib crane. Models from 600 kg upwards are slung under an excavator, loader or crane. When choosing the carrier machine, account for the device's own weight — 35 kg for the SM-600 and 132 kg for the POWERJET PJ-1650 — and for the machine's capacity at full reach rather than close to the mast.

Which materials can be moved with a vacuum device?

A vacuum device handles materials with a surface smooth enough for the seal to adhere: vibro-pressed concrete, cut stone, ceramic and porcelain slabs, glass and precast units. Heavily porous, strongly textured or deeply patterned materials require a dedicated suction plate with a more compliant seal. The surface also has to be clean — dust and water reduce the seal quality and with it the real lifting capacity.