This page covers the 50 mesh count of gyratory sifter screen deck: the woven specification per Sifter OEM frames, the particle size it retains, the open area it presents to flow, and the neighbouring counts to step to when the separation requires it.
50 Mesh Specification Row (Sifter OEM frames)
| Mesh count | Wire diameter (mm) | Aperture (mm) | Micron rating (u00b5m) | Open area (%) | Deck (mm) |
|---|---|---|---|---|---|
| 50-Mesh | 0.220 | 0.288 | 288 | 32.1 | 1500 u00d7 3000 |
50 Mesh to Micron & Aperture
| Openings per inch | 50 |
|---|---|
| Aperture (opening width) | 0.29 mm |
| Micron rating | 288 µm |
| Standard wire diameter | 0.22 mm |
| Open area | 32.1 % |
Aperture = (25.4 mm ÷ mesh count) − wire diameter. The micron rating equals the aperture in micrometres; actual retention also depends on particle shape and cake formation.
Wire Diameter Options at 50 Mesh
| Option | Wire dia | Aperture | Micron | Open area | Weight (SS) |
|---|---|---|---|---|---|
| Heavy wire | 0.286 mm | 0.222 mm | 222 µm | 19.1 % | 2.11 kg/m² |
| Standard wire | 0.220 mm | 0.288 mm | 288 µm | 32.1 % | 1.25 kg/m² |
| Fine wire | 0.165 mm | 0.343 mm | 343 µm | 45.6 % | 0.70 kg/m² |
Heavier wire adds strength and abrasion life but closes the aperture; finer wire opens the aperture and raises throughput at the cost of durability. Specify mesh count AND wire diameter to fix the aperture unambiguously.
Open Area & Flow at 50 Mesh
The standard 50 mesh weave presents an open area of about 32.1%. At this count the mesh presents little flow resistance; selection is normally driven by particle retention and mechanical strength rather than pressure drop.
50 Mesh Cloth Weight
Standard 50 mesh stainless cloth weighs approximately 1.25 kg/m² (density 7.93 g/cm³ basis; brass and copper weave roughly 10% heavier, aluminum about one third). Use this figure for roll handling and freight estimation.
Typical Applications for 50 Mesh Gyratory Sifter Screen Deck
50 mesh gyratory sifter screen deck is commonly specified for general straining and sieving, paint and coating filtration, grease filters, insect screening, grain cleaning and pre-filtration ahead of fine media.
When to Step Up or Down from 50 Mesh
Move to 60 mesh when particles are passing that must be retained; drop back to 40 mesh when the element blinds too quickly or the pressure drop is excessive. In a multi-layer pack, pair this count with a coarser support mesh downstream to carry the pressure load.
What Gyratory Sifter Screen Deck Does
Separating granules, pellets and powders on rectangular gyratory (tumbler) sifters, where tensioned mesh decks move in a flat circular motion that spreads product thinly for accurate cuts.
Fitting & Care
- Tension evenly and re-check after the first shift, when new cloth beds in.
- Inspect ball cleaners under each deck and replace flattened balls.
