Semi-Automatic Capsule Filling Machines

The core differences lie in production capacity, budget, and the level of manual intervention:
• Manual Fillers: Best for R&D labs or extremely small-scale production (under 3,000 capsules/hour). They operate with zero power drive.
• Semi-Automatic Fillers: The perfect bridge product. Capsule alignment and separation are fully automated, but moving and locking the dosing discs requires 1-2 operators. With an output of 15,000 - 30,000 capsules/hour, they offer exceptional ROI for growing pharmaceutical/nutraceutical companies or small-batch, multi-variety production.
• Fully Automatic Fillers: Operate completely hands-free from feeding to output. Capable of tens to hundreds of thousands of capsules per hour, but require a significant capital investment and longer changeover times.

Standard industrial models typically achieve an actual output between 15,000 and 25,000 capsules per hour. The upper limit depends heavily on operator proficiency. Experienced operators utilizing a dual-disc rotation setup can push efficiency close to 30,000 capsules/hour.

Yes, provided you change the corresponding interchangeable tooling (molds). Standard machines are compatible with capsule sizes #000, #00, #0, #1, #2, #3, #4, and #5. One of the greatest benefits of semi-automatic machines is quick changeovers—a skilled operator can swap out the full set of dosing discs and capsule feeding components in just 15 to 20 minutes.

Standard models are engineered primarily for free-flowing powders and fine granules:
• If you need to fill liquids (e.g., vegetable oils, essential oils), you must equip the machine with a specialized liquid dosing pump and pneumatic control system, paired with a capsule sealing machine to prevent leakage.
• If you need to fill pellets, a customized volumetric pellet filling attachment is required.

For powders with standard flowability, the machine can control weight variation within ±3% to ±5% by adjusting the dosing disc speed and filling time. Final accuracy is influenced by the consistency of powder density, flow characteristics, and the stability of the operator's pace.

The vacuum pump generates negative pressure during the orientation phase to separate the capsule caps from the bodies. If the vacuum pressure is insufficient or fluctuating, capsules will fail to separate, leading to unopened capsules, powder blowouts, crushed shells, and high reject rates. We recommend a premium vacuum pump with a capacity of at least 40 m³/h.

Root Causes: The vacuum pump filter is clogged with powder, or there is a minor air leak in the vacuum lines, dropping pressure below the required splitting threshold. Alternatively, powder buildup in the uncleaned mold holes causes the capsules to bind too tightly, or damp capsule shells stored in high humidity have deformed.
Solutions: Routinely clean the vacuum pump filter and check all line connections. Wipe down the mold bores with alcohol after every production shift. Strictly maintain cleanroom conditions (recommended: temperature 20-24°C, humidity 35-45%).

Root Causes: The upper mold (cap disc) and lower mold (body disc) are not perfectly concentric at the locking station, causing the push pins to strike and crush the shell. It can also be caused by excessive locking cylinder pressure or limits adjusted too far forward.
Solutions: Re-align and calibrate the locking station positioning pins to ensure absolute concentricity between the upper and lower discs. Lower the locking cylinder air pressure and fine-tune the stroke limit bolts until the capsules lock securely without denting.

Root Causes: Poor powder flowability causing material to bridge (clog) inside the hopper, an unstable low material level in the hopper reducing head pressure, or speed setting drift on the filling auger.
Solutions: Blend in an appropriate glidant (e.g., colloidal silicon dioxide) to improve powder flow, or install a hopper vibrator. Keep the hopper material filled between 1/3 and 2/3 capacity at all times. Regularly check and calibrate the VFD inverter speeds via the HMI.

Root Causes: The alignment/orientation fork shifts out of place or wears down after long production runs, losing its ability to catch and flip the capsule properly. Broken capsule fragments or powder crusts can also stick inside the magazine tracks, hindering the smooth natural flip.
Solutions: Inspect the orientation fork's angle, fine-tune its edge with fine sandpaper if misaligned, or replace it if worn. Halt operation and use compressed air to thoroughly blow out the magazine slots and delivery tracks.

Root Causes: The powder scraper blade or retaining brushes no longer sit flush against the surface of the dosing disc, leaving gaps. Alternatively, the material is too light, fluffy, or airy, causing it to become airborne easily as the disc spins.
Solutions: Adjust the spring tension on the scraper plate to guarantee it sits flat against the disc, and replace worn brushes promptly. For ultra-light powders, consider dry granulation beforehand to boost bulk density, or lower the rotational speed of the filling table.

Yes, absolutely. All components in direct contact with the product (such as hoppers, dosing discs, and scraper blades) are crafted from premium stainless steel (SUS304 or optional SUS316L). The entire frame features a flat, dead-zone-free design that fully aligns with rigorous pharmaceutical GMP and FDA sanitary regulatory guidelines.

The maintenance routine is very straightforward. At the end of each production shift, dismantle the quick-release dosing discs and powder hopper to wipe them down with alcohol or wash with water (ensure they are completely dry before reassembly). Regularly lubricate the drive gears and cam mechanisms, and regularly drain moisture from the pneumatic air filter.