Filling Machines

Filling methods, and what decides between them

Servo piston fillers — A metered piston stroke fills by displacement — the standard choice for viscous pastes, creams and sauces where fill volume must hold across batch changes.
Gear-pump and timed-flow fillers — Volumetric metering for free-flowing liquids; gear pumps hold accuracy on thinner products and repeat the same volume without a product-specific piston size.
Auger (powder) and specialty fillers — Powders meter by auger tooling against bulk density, and granules or corrosive products move into weight-loss or specialty concepts — matched product-by-product.

The deciding inputs are the same across methods: product form and viscosity (or particle size), fill volume or range per container, container drawing and material, and target output with shift pattern. Our longer guides cover the trade-offs in detail:

Method descriptions above are cross-checked against the manufacturer parameter tables behind our published fillers — ZONESUN and Cleveland Equipment — and against our own published guides. Model-level performance figures are not asserted from marketing pages; they come only from a machine's own parameter table, and catalogue speeds are condition-dependent (material, bottle size), not guaranteed output.

Filling parameter windows: what each dosing principle tolerates

Every dosing principle has a window — a product range it fills accurately and a range outside which accuracy, hygiene or speed degrades. Our comparison of the four main dosing principles (volumetric, peristaltic, diaphragm and servo piston) and the product behaviour classification explain the framework; the window boundaries we check against the published machines are:

Viscosity floor and ceiling — magnetic-pump fillers cover thin-to-medium liquids; gear-pump and piston systems take pastes and creams. A product at the boundary (gel, warm honey) is confirmed per machine, not assumed.
Particle tolerance — piston and rotor/lobe pumps pass soft particulate (jam, sauces); magnetic and gear pump clearances do not. Chunk size and particle hardness belong in the enquiry.
Temperature window — hot-fill products change seal materials and pump clearances; the published hot-sauce servo piston filler exists because heat is a real selection input.
Foaming behaviour — diving nozzles fill below the liquid surface to suppress foam; the published diving-nozzle machines carry that feature for a reason.
Corrosiveness — chlorinated or acidic products need diaphragm systems with resistant wetted parts; the published corrosive filler line is the family's dedicated answer.
Dose-volume accuracy curve — accuracy degrades toward the bottom of a filler's dose range; the published per-model dose ranges are the evidence, and half-range operation is safer than edge-of-range.
Cycle rate vs dwell — continuous-motion machines raise speed but shorten nozzle dwell; thick products may need tracking fillers that follow the bottle rather than faster static nozzles.
Container stability — lightweight or unstable bottles need diving or tracking heads that move with the container, or they tip during fill.
Cleanability — product changes determine whether wetted parts strip by hand or need CIP provisions; confirmed per machine, not per principle.
Drip control — cut-off valves and nozzle design matter more as viscosity drops; stringing on thin liquids is a nozzle specification, not an operator habit.
Accuracy verification — gravimetric check-weighing after the filler is how a stated accuracy is proven in production, per our fill accuracy and overfill guide.
Legal-for-trade obligations — net-weight-regulated fills change the verification regime entirely; we flag the obligation before quoting a regulated fill.

Viscous, crystallising and difficult media

The family's hardest selections sit at the media extremes. What we match to the published machines:

Thick pastes and creams — servo piston fillers with hopper agitation; the published multi-head servo paste fillers are built for hot sauce, jam and cosmetic creams.
Chunky sauces — rotor/lobe pump fillers pass soft chunks where gear pumps would stall; the published peanut-butter rotor pump machine is that case.
Stringy or tacky products — honey, syrups and gels need heated hoppers, drip cut-off and sometimes positive-expulsion nozzles; confirmed per product sample.
Crystallising products — products that set between cycles (honey, glucose, some brines) need heated or jacketed product paths and a flush routine; we confirm heating provisions per machine rather than assuming them.
Solvent- and acid-based liquids — diaphragm pump fillers with compatible seals; the published corrosive filler line and the chemical packaging guide cover the material-selection layer.
Aerated products — whipped or carbonated products need gentle transfer and level filling, not volume-only dosing; handled case-by-case with product samples.

Maintenance and changeover on this family

Filling machines are hygiene machines first: the maintenance question is less "what breaks" and more "what must be stripped, cleaned and verified between products". Our maintenance schedule and spare-parts guide carries the general routine; family specifics we raise with buyers:

Wetted-part spares — piston seals, pump rotors, diaphragms and nozzle O-rings matched to the product's chemistry; they are the first spares order on every filler.
Strip-down frequency — set by the product's spoilage and hygiene risk, not by the calendar; dairy and egg products run stricter routines than brines.
Changeover scope — a container-size change is mostly conveyor and nozzle-height adjustment; a product change adds strip-down and, on piston machines, often a different piston volume. We confirm which parts are exchanged per model.
Calibration routine — volumetric settings drift with product temperature and viscosity; a documented gravimetric check per shift keeps accuracy claims honest.
Documentation at commissioning — settings, strip-down photos and torque values recorded per product make the second changeover a recipe, not a re-commissioning.

Published machines in this family

Machines in this list are published on their own model pages; sourced specification fields (fill range, speed, power, dimensions) are traced to the manufacturer parameter table on each page where they are documented. Powder filling is its own family with a published auger powder filler.

What we need to quote a filler

Product form and viscosity (or particle size for particulates)
Fill volume or range per container
Container drawing or dimensions, and material
Target output and shift pattern

Scope, limits and what stays unconfirmed

We map product form, viscosity or particle behaviour, fill volume, container and target output before recommending a filling family. Powder flow, bulk density, dust control and dose range determine whether a powder-filling concept is workable.

When this applies

You know the product (or can send data on viscosity, particles or corrosiveness) and the container it goes into.
You have a target output in units per minute or per shift, even an approximate one.
You are comparing filling concepts — servo piston, gear pump, timed flow — rather than asking for one specific model.

Limits

Catalogue speeds are condition-dependent (material and bottle size), not guaranteed output.
Fill accuracy below ±0.5% generally needs a trial with your actual product; it is not asserted from a datasheet.
Corrosive or solvent-bearing products narrow the safe equipment set — confirm before quoting.

What you get

A written machine shortlist with the assumptions stated
A side-by-side specification comparison drawn from sourced parameter tables
A supplier question list covering the points the datasheets do not answer

Verified so far

Two filling models are published with field-level sourced specifications (fill range, speed, power, dimensions each traced to the manufacturer parameter table).
One model carries owner-confirmed measured output (40–60 bottles/min at stated viscosity conditions), filling accuracy, 316L contact parts and an FOB price band.
One model carries a published cash price ($7,255) alongside its sourced specs.

Still unconfirmed

Lead time is confirmed for one model only (25–35 days); the rest remain quotation items.
Site installation, commissioning and operator training are not part of the stated service scope.

Confirm before quoting

Product and container material must be confirmed for every project.
Contact-part finish and cleanability are quote-confirmed.
Fill accuracy and repeatability require a product-specific trial.

Buyer question

What should I provide for a filling-machine shortlist? Product form, viscosity or particle size, fill range, container drawing and target output.

Supply through own production plus outsourcing

PackHub fulfils filling requirements through own production plus a vetted outsourcing network, so the family is not capped by a single factory floor. Standalone fillers, powder-filling tooling and complete filling stations inside a monoblock line are all quotable; whichever factory builds it, PackHub stays the one counterparty for specification verification, pre-shipment inspection and export.