The SME-750II Pneumatic Stencil Cleaning Machine from Southern Machinery is a dual-chamber, compressed-air-driven stencil washer designed for SMT and EMS production lines. It cleans two stencils at once — up to L750 × W750 × H40 mm each — in a fully automatic clean-and-dry cycle of roughly 3–5 minutes per side. Because the whole machine is driven by compressed air and contains no electric motor inside the wash chamber, it can safely run with solvents as well as water-based cleaning liquids, while the SUS304 structure and all-SUS304 liquid piping resist acid and alkali corrosion.

Key Features
- Two independent cleaning units — wash two stencils (up to L750 × W750 × H40 mm) in a single cycle.
- 100% air-driven, no electric power — safe to run with solvents and cleaning liquids.
- Full SUS304 body and liquid pipes, no plastic — acid/alkali resistant with a 15-year structural lifespan.
- 360° double-side rotary spray rods protect mesh tension and deliver stable cleaning quality.
- 3-level liquid filtration (1 mm SUS304 net + 20 µm filter bag + 1 µm cotton filter) with liquid recycle for low consumption.
- Inner-lock safety door and safety valve stop the machine the instant a door opens.
- One-button automatic clean-and-dry — 3–5 min per side for solder-paste stencils.
- Modular design for easy maintenance, built with branded pneumatic parts (Ingersoll Rand air pump, Koganei indicators).
Technical Specifications
| S/N | Item | Specification | Remarks |
|---|---|---|---|
| 1 | Max stencil size | L750 × W750 × H40 mm × 2 pcs | |
| 2 | Liquid tank capacity | 40 L × 2 pcs | |
| 3 | Wash method | 360° double-side rotary nozzle liquid spray wash | |
| 4 | Dry method | 360° double-side rotary nozzle air blow dry | |
| 5 | Clean time | 3–5 min | solder paste stencil |
| 6 | Dry time | 3–5 min | solder paste stencil |
| 7 | Filter system | 1 mm SUS304 filter net + 20 µm filter bag + 1 µm cotton filter | each unit |
| 8 | Air supply | 0.5–0.7 MPa, 400–600 L/min × 2 sets | |
| 9 | Net weight | 480 kg | |
| 10 | Machine size | L1500 × W960 × H1700 mm |
All figures above are taken from the official SME-750II product datasheet.
Cleaning Result (100× magnification, before vs. after)

Branded Pneumatic Components

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