Six industries.
One answer.
Move the material.
Webac has been selling vibration equipment into process industries since 1983. Every industry makes its own demands. Hygiene, ATEX, washdown, cycle time, material traceability. We match the envelope to the job, and we show the calculation.
Construction materials
Compact the concrete, discharge the aggregate, shake out the truck.
Webac has been a supplier to the precast concrete, ready-mix and aggregate industries since 1983. Internal vibrators for fresh concrete, external vibrators on formwork, hydraulic units on dump truck walls and KONDI-type compaction tables for concrete specimens.
- Formwork vibrators on silo and form walls
- Hydraulic MVO 850 on truck and mixer bodies
- Electric unbalance motors for aggregate screens
- Concrete test tables, DIN EN 12390-2
Pharmaceutical
Hygienic drives, ATEX paperwork, traceable materials.
Powder flow and tablet feeding in pharma operations demand hygienic housings, ATEX ratings for zone 21 dust, and a full material traceability file. Webac turbine vibrators and stainless Micro WM motors are the go-to selections.
- Turbine vibrators on blenders and mills
- Stainless Micro WM feeder drives
- ATEX II 2D for excipient dust
- Material certificates 3.1
Food
Washdown-ready vibration for grain, sugar, flour and spices.
From flour silos to spice dosing lines, food processors need dependable, cleanable vibration. IP 66 Webac motors survive high-pressure washdown. Oil-free turbine vibrators are the right answer for direct product contact zones.
- IP 66 electric vibrators for silos
- Oil-free turbine vibrators
- Stainless external vibrators
- Frequency converters in NEMA cabinets
Confectionery and bakery
The KONDI table is a Webac specialty, not a side line.
Chocolate, caramel, fondant and jelly all need different frequencies to settle cleanly into moulds. The KONDI lineup exists because confectionery makers asked for something that wouldn't splash the mould or trap air. Custom-tuned per product line.
- KONDI mould-settling tables
- Heated-platen variants
- Gentle ramp control
- Hygienic stainless finish
Packaging
Settle the bag so the pallet stacks.
Big-bag, FIBC and drum fillers all live or die on compaction during fill. A slack pallet rejects at receiving. Webac big-bag platforms and underfloor compaction tables sit below the filling chute and let gravity finish the job.
- Big-bag compaction platforms
- Underfloor vibration plates
- Load cell integration
- Pneumatic or electric drive
Water treatment
Move activated carbon, lime and sludge without bridging.
Municipal and industrial water treatment runs on silos of activated carbon, lime and ferric chloride. All of them bridge. Webac external vibrators on the silo wall and electric drives on the feeder restore consistent flow to the process.
- External vibrators on hoppers
- Frequency converters for dosing
- ATEX where required
- Corrosion-resistant housings
Seven topics, one shop floor, forty three years.
The same seven questions come back on almost every enquiry. Here are the ones worth reading before you send us a brief.
What is vibration?
The oscillation of a body about a rest position. Measured in Hz, amplitude in mm, and drive power in kW.
Types of actuation
Pneumatic, electric, hydraulic. Each principle suits a different envelope of frequency, power and hygiene.
Conveying
Linear motion moves material from A to B without moving parts in the flow path.
Dissolving and slackening
Vibration breaks bridges and ratholes in hoppers, silos and big bags.
Compressing
Concrete on slabs, powder in moulds, big bags on pallets. Vibration collapses voids and air pockets.
Calculation examples
Worked force calculations, corrected for drive type, with the exact model that delivers the result.
Important information
Advantages and drawbacks of pneumatic versus electric drive. A selection guide on one screen.
Calculation examples.
Worked, not waved at.
Four worked sizing calculations from the Webac catalogue, with the correction factor for pneumatic VT units and the electric equivalents from the WEV range.
100 daN target force on a 100 kg body
1.2 × 100 = 120 daN
WEV 05/14/2
120 / 0.85 = 141 daN
VT 16
Note. Baseline calculation. The 0.85 correction applies to VT-type pneumatic vibrators and accounts for the softer impulse curve.
Replace a VT 24 with a pneumatic alternative
VK 26 delivers 200 / 0.6 = 333.5 daN = 3335 N
Kugelvibrator VK 26
VR 78 delivers 200 / 0.35 = 571.5 daN = 5715 N
Rollenvibrator VR 78
Note. Two valid pneumatic swaps for a VT 24. Pick VK for frequency range, VR for force output.
Replace a VT 31 with a pneumatic alternative
VK 26 delivers 266 / 0.6 = 443.5 daN
Kugelvibrator VK 26
VR 78 delivers 266 / 0.35 = 760 daN = 7600 N
Rollenvibrator VR 78
Note. Both swaps clear the target. VR 78 has the larger safety margin for heavy hoppers.
Replace a VT 16 with a smaller pneumatic unit
VK 22 delivers 121 / 0.6 = 201 daN = 2010 N
Kugelvibrator VK 22
VR 47 delivers 121 / 0.35 = 346 daN = 3460 N
Rollenvibrator VR 47
Note. Either option works below 5 kW installed. The VK 22 is the more common stock item.
Formulas taken from Webac's public Anwendungsbeispiele Kalkulation. The centrifugal force target F is calculated from the g-factor times the mass to be moved. For VT type pneumatic vibrators, divide the result by 0.85 to account for the correction coefficient.
Important information.
Air or electric, not both.
The most common question on every application call: should this site run pneumatic or electric vibrators? Here is the short version, drawn directly from the Webac catalogue.
Pneumatic drive
- Very flexible: frequency and amplitude adjustable on the fly
- High frequency for fine materials
- Explosion-safe in dust atmospheres
- Temperature-safe up to 200°C with UCV-type units
- Runs on compressed air, which is already in most plants
- Small installation envelope
- Higher energy cost per hour of run time
- Louder than electric, except VT type at max 70 dBA
- Roller vibrators need oiled compressed air supply
Electric drive
- Energy efficient, clean, quiet
- Adjustable centrifugal force via eccentric weights
- Broad power range from 0.05 kW to 22 kW
- Works directly from site mains
- Less flexible: frequency fixed by pole count
- Not intrinsically explosion-safe without ATEX rating
- Temperature-sensitive above 50 to 70°C
- Larger installation envelope
Content paraphrased from Webac's own Wichtige Hinweise page. The catalogue goes into more detail on temperature envelopes, ATEX ratings per zone, and frequency tuning per material.
Foundries, mining,
chemical, paper, steel.
These six industry pages are the ones with the longest track record. Webac equipment runs in foundry shakeout, mining screens, chemical reactor zones, paper machine screens and steel mill conveyor lines as well. Ask us and we'll point you at the nearest reference.