{"id":22021,"date":"2024-05-30T13:51:57","date_gmt":"2024-05-30T13:51:57","guid":{"rendered":"https:\/\/www.baghouse.com\/?p=22021"},"modified":"2025-06-18T22:21:11","modified_gmt":"2025-06-18T22:21:11","slug":"how-to-measure-your-baghouse-filters-cages","status":"publish","type":"post","link":"https:\/\/baghouse.com\/es\/how-to-measure-your-baghouse-filters-cages\/","title":{"rendered":"C\u00f3mo medir tus filtros y jaulas de baghouse."},"content":{"rendered":"
\n\t\t\t\t
\n\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

When ordering replacement baghouse bag filters, it is extremely important that you order the right size to ensure a proper fit in your baghouse. <\/strong><\/p>

\"Top<\/a>Properly fitting bags and cages are integral to achieving long filter bag life and optimum baghouse performance. <\/span>Filter bags come in a huge variety of sizes and types, to fit many makes and models of baghouses.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tDownload our FREE Filter & Cage Baghouse Step-by-Step Measurement Guide<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t
\n\t\t\t
<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
\n\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t

Measuring Filter Bags & Cages - Key Terms<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t
\n\t\t\t
<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
\n\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

Flat Width\/Diameter<\/b><\/h4>

This is the most critical measurement, and the one people most often get wrong. As we need this size correct down to a \u215b\u201d, it is not possible to measure the diameter of a loose bag accurately enough for ordering. For that reason, we instead rely on a flat width measurement, which we can then convert to an accurate diameter.\u00a0<\/span><\/p>

Largo<\/b>\u00a0<\/span><\/h4>

For top load pulse jet bags, the bag is the same length as the cage or just 1\u20442” longer. For bottom load pulse jets, where the top of the raw edge bag is folded over the top of the cage, we recommend 4\u201d of overlap, but some OEMs recommend 2\u201d.\u00a0<\/span><\/p>

Tubesheet Hole Size\/Snap Band Size<\/b>\u00a0<\/span><\/h4>

Often the hardest dimension to confirm, a hole size measurement accurate down to 1\/32\u201d is required to ensure proper fit. For best results, measure the hole with calipers or check the OEM drawings for details. Alternatively, you can send a sample bag to confirm the tubesheet hole size or have us make a sample bag\/cuff to test fit before releasing the entire order to production.\u00a0<\/span><\/p>

Size Draft\/Accurate Specifications<\/b><\/h4>

While it is usually possible to rely on previous bag sizing when reordering, at times, there may be reason to reconfirm all bag and cage sizing choices. Over time, sloppy or copy errors can result in slight variances in sizing making their way into orders and company records. In this way, the original bag sizing can see a slight, but impactful creep over successive orders.\u00a0<\/span><\/p>

When we suspect this has happened, we may ask you to go back and provide us with the fundamental component sizing that dictates the overall bag and cage sizing. For top load pulse jet, reverse air, and many shaker units this is the tubesheet hole size. For bottom load pulse jets, and some reverse air\/shaker units, it is the mounting hub\/venturi.\u00a0<\/span><\/p>

Once we have this fundamental sizing information, we can then recommend the proper bag and cage sizing.\u00a0<\/span><\/p>

Bag\/Cage Fit or \u201cPinch\u201d<\/b><\/h4>

<\/b>Filters that are too loose or too tight on the cages will severely limit collection efficiency and lead to premature failure. For most felt bag materials (polyester and aramid\/nomex being the most common) we generally recommend \u00bc\u201d to \u00bd\u201d of pinch, meaning the bag diameter is that much larger than the cage. Other specialty fabrics such fiberglass, P84, and fabrics with PTFE membrane applied to them may require tighter tolerances.\u00a0<\/span><\/p>

Number Cage Vertical Wires and Horizontal Ring Spacing<\/b><\/h4>

Proper care must be taken to ensure that the cage construction will properly support the filter bag as well as optimize cleaning and efficiencies. Most fabrics work well with using cages with 10, 12 or 14 vertical wires. However, some specialty fabrics such fiberglass, P84, and fabrics with PTFE membrane applied to them require the additional support of 20 wire cages and possibly tighter spacing on the horizontal rings.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

\n\t\t\t\t
\n\t\t\t\t\t\t\t
\n\t\t\t
<\/div>\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t
\n\t\t\t
<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
\n\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t

Common Bag and Cage Size Combos <\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
\n\t\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

Below we have listed a few common sizes for pulse jet and reverse pulse systems in use today.\u00a0<\/span><\/p>

Top Load Style<\/b><\/h4>