Filling, capping & packing machine manufacturer · Shanghai, China

Vial filling machine guide for pharma, cosmetics and labs

How vial, cartridge and syringe filling machines work: dosing pumps, stoppering, crimping and capping, oral liquid lines, and what to check for pharmaceutical filling.

Short answer: A vial filling machine doses small volumes — typically 1 to 200 ml — into glass or plastic vials, then inserts a stopper or plug and applies a screw cap or crimps an aluminium seal. Precision pumps (peristaltic or ceramic/stainless piston) give the accuracy needed for pharmaceuticals, cosmetics, e-liquids and diagnostics. Sterile injectables additionally require aseptic isolators or RABS, which are a separate class of equipment.
Vial filling machine — illustrative image
Illustrative image. See the linked product pages for photos and specifications of the actual machines.

How a vial filling and capping machine works

  1. Vials are fed from a turntable or tray onto an indexing conveyor or star wheel.
  2. Filling nozzles dive into the vial and dose the set volume, often bottom-up to avoid foaming.
  3. A pick-and-place head inserts the rubber stopper, plug or dropper.
  4. The cap is placed and screwed down, or an aluminium seal is crimped.
  5. Rejected or missing-component vials are separated.

Machines in our catalogue

MachineVolumeOutput
KS4 cartridge & prefilled syringe filling and crimping machine1–3 ml cartridges, syringes, small vials30–70 per minute
Y2 two-nozzle small bottle filling & capping machine2–150 ml (eye drops, vials)20–35 per minute
Y4 four-nozzle liquid filling & capping machine2–150 ml30–60 per minute
Rotary tracking filling & capping machine for oral liquid50–500 ml oral liquid and syrup100–200 per minute

Pharmaceutical packaging beyond the filler

Sterile and aseptic filling: be precise about scope

Injectable drugs must be filled under aseptic conditions — isolators or restricted-access barriers, sterilised components and validated environmental monitoring. That is a different class of equipment and qualification. Our machines are used for non-sterile and terminally processed products such as oral liquids, eye-drop and cosmetic vials, diagnostics reagents, essential oils and e-liquids. Tell us your product and regulatory requirements and we will say clearly whether a machine is suitable.

What to check

  • Vial diameter and height, glass or plastic, and the closure (stopper, crimp seal, screw cap, dropper)
  • Fill volume and accuracy target
  • Product contact materials and cleaning method
  • Documentation you need (materials certificates, test reports)
  • Vials per minute

Send your vial drawing and product for a recommendation.

Questions and answers

What volume can a small vial filling machine handle?

Our machines cover 1–3 ml cartridges and syringes, 2–150 ml vials and bottles, and 50–500 ml oral liquid bottles.

Can a vial filling machine also crimp caps?

Yes. The KS4 machine fills, inserts plugs, places the outer cap and crimps it in one cycle.

Are your vial fillers suitable for sterile injectables?

Sterile injectables require aseptic filling equipment and validation. Our machines are intended for non-sterile products such as oral liquids, eye-drop and cosmetic vials and reagents; discuss your product with us before ordering.

How accurate is vial filling?

The catalogue specifications list about ±1% or ≥99% accuracy depending on product and container.

Related buying guides

PreviousWhat is a filling machine? Types, uses and how they work

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