Coffee Roaster Drum & Chaff Screen for forming the perforated drum and chaff collector of coffee roasters so hot air passes the beans while chaff is carried away. 4 sizes listed, with technical drawing and quotation.
Customize the parameters below — every spec field is editable, and the drawing redraws to match the values you choose. Changing the size will snap the other fields to that size's standard values; you can then override any individual value.
Sends the selected values to the quote form below.
Request a Quotation for Coffee Roaster Drum & Chaff Screen
Tell us the specification (mesh count / micron / dimensions), material and quantity you need for Coffee Roaster Drum & Chaff Screen (NSF/ANSI 4 equipment) and our team will respond within one business day. Click "Request this configuration" on the drawing above to send the parameters you just chose straight into this form.
Every row below is a starting point for the customizer above — pick any specification row and the drawing will redraw to it.
Size
Hole diameter (mm)
Pitch (mm)
Thickness (mm)
Open area (%)
Use
u00d82.0 / P3.5
2.0
3.5
1.0
29.6
Drum shell, 250 g u2013 1 kg
u00d82.5 / P4.0
2.5
4.0
1.2
35.4
Drum shell, 1 u2013 5 kg
u00d81.5 / P2.5
1.5
2.5
0.8
32.6
Chaff collector
u00d83.0 / P5.0
3.0
5.0
1.5
32.6
Cooling tray floor
Coffee Roaster Drum & Chaff Screen (NSF/ANSI 4 equipment) is used for forming the perforated drum and chaff collector of coffee roasters so hot air passes the beans while chaff is carried away.
Hole size: Below the smallest bean (about 4 mm); 2–2.5 mm is typical.
Thickness: 1.0–1.5 mm for thermal stability and stiffness.
Open area: 30–35 % balances airflow and drum strength.
Materials
Standard supply is stainless steel 304, stainless steel 316/316L; the material column in the table and the drawing options show the exact grade for each size. Other alloys and finishes can be quoted to your drawing.
Fitting & Care
Roll the perforated sheet with the burr side outward so beans tumble without catching.
Vacuum the chaff collector every few batches — accumulated chaff is a fire risk.
Common Mistakes
Choosing holes large enough for peaberries or broken beans to fall through.
Thin drum shells that warp at roast temperature.
When Coffee Roaster Drum & Chaff Screen Is Not the Right Choice
Not for direct-flame roasting without a solid drum section where uniform conduction is wanted.
Coffee Roaster Drum & Chaff Screen is made to order as finished parts. Indicative pricing starts from about US$9.50 per piece for a standard size at production quantity; the final price depends on size, material, finish, tooling and order volume. Send your configuration from the drawing above for a quotation.
What is Coffee Roaster Drum & Chaff Screen used for?
Forming the perforated drum and chaff collector of coffee roasters so hot air passes the beans while chaff is carried away.
What hole size for a coffee roaster drum?
About 2–2.5 mm, small enough to hold peaberries and broken beans.
Perforated or solid roaster drum?
Perforated drums roast faster with more convection; solid drums give more conductive heat.
Why is chaff cleaning important?
Dry chaff ignites easily at roast temperatures.
What is the specification range of Coffee Roaster Drum & Chaff Screen?
The table on this page lists 4 standard specifications for Coffee Roaster Drum & Chaff Screen, from u00d82.0 / P3.5 to u00d83.0 / P5.0. Specifications outside the table — custom mesh counts, wire diameters, roll widths and fabricated pieces — can be quoted on request.
How do I request a quotation?
Use the parametric drawing on this page to set the exact configuration (specification, material, treatment) and click "Request this configuration" — a specialist from custommetalfilters.com will respond within one business day.
Related Mesh Products
Closely related constructions in Kitchen & Appliance Filters — compare aperture range, open area and cleanability.
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