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Combination weighing

Combi Weighers

Compact vibratory weigher for small doses up to ~100 g. Ideal for coffee beans, tea, seeds and similar products.

Range5–100 g
SpeedUp to 10 packs/min
Accuracy±0.5–3 g
Best forCoffee, tea, seeds, sachets and small hardware packs
Enquire about this machine View technical specifications
Technical specifications

Headline specifications for Weigh Filling Machine 100.

Range
≈5–100 g (application‑dependent)
Accuracy
≈±0.5–3 g (typical)
Speed
Up to ≈10 packs/min
Hopper
Compact stainless hopper
Control
Micro‑computer; vibratory feed
Discharge
Adjustable outlet
Voltage
110/220 V, 50–60 Hz
Power
≈300 W (typ.)
Materials
Stainless steel
Footprint
Small benchtop
Options
Date coder, foot pedal
Applications
Coffee beans, tea, seeds
Typical applications

Where this machine fits best.

Coffee & tea

Beans, loose‑leaf, sachets.

Snacks

Seeds, small nuts (size permitting).

Hardware

Small parts and fasteners.

What's included

  • Main weighing base
  • Hopper
  • Outlet/funnel kit
  • User manual
Sizing the solution

Information to include with your enquiry.

Using the structure already present in the supplied product pages, the site prompts buyers to send better application data from the start.

  • Product flowability and target dose
  • Pack style (pouch/jar) and spout size
  • Throughput requirement (packs/min)
  • Space and discharge height
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Combination and multihead weighing

Specify the complete weighing process, not only the head count.

A multihead or combination weigher is selected around product distribution, the target weight, the pack route and the evidence required from a sample trial.

How combination weighing works

Product is introduced to a central distribution area and metered across feed trays towards individual hoppers. Each weigh hopper holds a portion. The controller evaluates the available portions and discharges a combination that approaches the programmed target weight. The quality of that result depends on the product reaching the hoppers consistently and on enough suitable portions being available for the calculation.

The dispersion cone, feed trays, hopper geometry and feeder settings therefore matter as much as the weighing algorithm. Large pieces can restrict hopper capacity, light products may need more volume, dusty products can affect movement, and oily or sticky products may need different contact surfaces. Dimpled surfaces can help some products release, but they are not a universal solution and must be assessed against cleaning and product-damage requirements.

Accuracy, target weight and product giveaway

Accuracy should be discussed with a defined product, target weight, tolerance, operating rate and sampling method. Product giveaway is the amount packed above the commercial target; it is influenced by feeder control, the number and spread of available portions, product consistency and the downstream process. A realistic trial should record the mean, minimum and maximum pack weights, variation, rejects and the amount of excess product over the agreed target.

Head count, hopper volume and product size

More heads can provide more possible combinations, but the correct configuration also depends on hopper volume, piece size, target dose and required output. Hopper capacity must allow the product to enter and discharge without bridging or damage. A fragile snack may need controlled feed amplitude and lower drop heights, while pellets or small hardware may need attention to noise, impact and wear.

Timing hopper and packaging interface

A timing hopper can buffer the completed dose and release it when the downstream machine is ready. On a VFFS line, the weigher and bagger need a reliable signal exchange so the dose is discharged only when the bag is correctly formed and open. With pre-made pouches, the pouch must be presented, opened and supported before the product drop. The interface should also account for alarms, product starvation, reject handling and safe access.

Cleaning and changeover

Confirm how product-contact parts are removed, accessed and cleaned, how change parts are identified, and whether dry cleaning, wet cleaning or allergen controls apply. Cleaning time should be observed during a trial where changeover is commercially important. Contact materials and surface finish should be agreed for the actual product and sector.

Sample trial and quotation inputs

Evidence to collect before the specification is frozen.

Representative product

Use normal production material and include the full piece-size distribution. Record bulk density if known, fragility, seasoning, dust, moisture and any batch-to-batch variation.

Defined test conditions

State the target weight, tolerance, desired output, feeder settings, pack route, number of test cycles and how results will be measured. Headline accuracy or speed is not meaningful without these conditions.

Acceptance criteria

Agree the acceptable average, minimum and maximum weights, giveaway, reject level, product damage, stoppages, changeover time and any checkweigher or downstream requirements before the final acceptance run.

What products are normally considered for a combination weigher?

Free-flowing snacks, pellets, granules, beans, seeds and small components are common starting points. Product size, stickiness, dust and fragility still need to be checked using representative samples.

Does a higher head count always produce a better result?

No. Head count is one factor. Hopper volume, target weight, product distribution, feeder control, piece size and the downstream timing requirement all affect the practical result.

How is product giveaway assessed?

Run a defined number of cycles under stated production conditions, compare actual pack weights with the agreed target and record the mean excess weight as well as the overall variation and rejects.

How are fragile products protected?

Review feed amplitude, surface finish, hopper geometry, discharge sequence, timing hopper and total fall height. The trial should inspect visible breakage as well as weight performance.

Can a multihead weigher feed a VFFS machine?

Yes, when the support frame, discharge path, timing hopper and control signals are designed around the bagger. The specialist VFFS route is covered by Lancing Form Fill & Seal.

What should be sent with an enquiry?

Send product samples or detailed product information, target weight, tolerance, pack dimensions, output target, available floor space, utilities and the proposed upstream and downstream equipment.

Request a combination-weigher reviewRead the selection guide