Pneumatic S-1688 for zero-ignition safety, electric SME800 / BC320 for aqueous process control, SME-750II twin-chamber for volume screen rooms. Every aperture you unclog is a bridging defect you never ship.
Photos from ph.smthelp.com — real Southern Machinery stencil cleaners.
The flagship: a fully pneumatic wash-dry cabinet — no electric power inside the chamber, so it stays safe with flammable screen and stencil chemistry while rotating atomization spray arms and a four-stage filtration loop recycle the cleaning liquid for months.
| Stencil / screen | Standard 29-inch and below; stencils, glue screens, copper screens, nylon |
|---|---|
| Cleaning liquid | Max 50 L (min 20 L) bath, closed recycle — 2 filters (≈$35–40) cover 200+ screens |
| Filtration | Three-class tin filter: 10 μm / 5 μm / 1 μm + 2 mm/1 mm intake screens |
| Cycle | Wash + 2–4 min rinse (stencil & copper net), program timers |
| Air supply | 0.4–0.6 MPa, 400–600 L/min × 2 (factory compressed air only) |
| Footprint | L980 × W700 × H1730 mm · 320 kg |
Source: S-1688 Pneumatic Stencil Cleaner (Southern Machinery 2019) + S-1688 catalog + O&M manual.
Electric pump-and-heat platform for 750 mm-class stencils with water-based chemistry: dual 60 L tanks, 1 μm filtration on both circuits, hot-air drying to 90 °C and conductivity-monitored DI rinse — engineered for shops standardizing on aqueous process control.
| Stencil size | 750 × 750 × 40 mm max |
|---|---|
| Tanks | 60 L cleaning liquid + 60 L water; aqueous agent, DI/DM rinse |
| Filtration | 1 μm cleaning + 1 μm DI water |
| Drying | Hot air to 90 °C · bath heated to 60 °C · noise <70 dB |
| Conductivity | 0–18 MΩ meter on rinse loop |
| Utilities | 380 VAC 3-phase, 90 A · air 0.45–0.7 MPa (DI mode 30–60 L/min) |
| Footprint | L1300 × W1400 × H1970 mm · 720 kg |
Source: SME800 Electric Stencil Cleaning Machine 2021 datasheet, Southern Machinery.
The newer 4-fixed-nozzle electric washer: 737 mm square stencil capacity, 60/60 L tanks, 4–5 kg/cm² wash/rinse pressure and 1 μm dual filtration in a footprint that slots next to the printer.
| Stencil size | L737 × W737 × H40 mm max |
|---|---|
| Tanks | 60 L liquid / 60 L water |
| Pressure | Wash / rinse 4–5 kg/cm² |
| Filtration | 1 μm liquid / 1 μm water |
| Utilities | AC380V 50/60 Hz, 28 kW · air 0.5–0.7 MPa |
| Footprint | L1300 × W1400 × H1950 mm |
Source: BC320 Stencil Cleaning Machine Introduction 2023, Southern Machinery.
Big-chamber pneumatic twin for two 750×750 stencils per load: air-pump driven liquid recycle (low consumption), filter ladder 1 mm / 20 μm / 1 μm and air-blow drying — the value pick for high-volume screen rooms.
| Chamber | L750 × W750 × H40 mm × 2 pcs max per load |
|---|---|
| Filtration | 1 mm SUS304 screen + 20 μm bag + 1 μm cotton |
| Air supply | 0.5–0.7 MPa, 400–600 L/min × 2 |
| Process | Pump solvent from tank → spray wash → recycle → air-blow dry |
| Footprint | L1500 × W960 × H1700 mm |
Source: SME-750II Stencil Cleaning Machine datasheet, Southern Machinery.
The single most-asked question in stencil cleaning. Here is how we answer it for customers every week.
| Decision factor | S-1688 Pneumatic | SME800 / BC320 Electric |
|---|---|---|
| Power source in chamber | None — 100% pneumatic, safe with flammable chemistry | Electric pumps & heaters; water-based agents only |
| Best stencil size | 29-inch and below | 737–750 mm square, thicker 40 mm frames |
| Consumables | ≈$35–40 filter set per 200+ screens, bath months long | Aqueous concentrate + 1 μm cartridges on 2 loops |
| Drying | Air blow (compressed air) | Monitored hot air to 90 °C |
| Typical buyer | Screen rooms, mixed inks/adhesives, ATEX-minded plants | Aqueous-standard EMS lines wanting process control |
Comparison compiled from the official S-1688 / SME800 / BC320 datasheets and the "Comparison between Pneumatic stencil cleaner" PDF (see catalogs below).
Tell us your product mix and we will spec it — this section shows how we typically match lines to factories.
No electricity in the chamber, months-long bath life, 29-inch capacity — the safe default for screen rooms.
Heated wash, 1 μm dual filtration, 90 °C monitored drying and conductivity-logged DI rinse for process-control shops.
Two 750 mm stencils per load on pure shop air — the throughput twin.
Stencil defects are printed before placement even starts. The comparison PDFs below include the full consumption math.
Typical site preparation for Southern Machinery aqueous cleaning equipment. Exact utilities for each model are in its manual.
Flat floor near printer area; cabinet door side needs operator clearance.
Dry shop air 0.4–0.7 MPa, 400–600 L/min (S-1688 uses two feeds).
380 VAC 3-phase per rating; earth leakage protection recommended.
Fill 20–60 L bath to level marks; note agent class (aqueous vs solvent-safe cabinet).
Run a dirty production stencil; compare aperture photos before/after.
Click any video to load it from YouTube — nothing streams until you ask.
Official Southern Machinery datasheets, manuals and validation reports, hosted on our file server.
Mail a stencil photo, size and paste type. You get the platform recommendation (pneumatic vs electric) and running-cost math the same week.
Email info@smthelp.com WhatsApp +86 136 0256 2576