90deg bends will restrict airflow by 3-4% each.Every meter of 4” (100mm) flexible hose will reduce your CFM by around 7 - 10% per meter.To calculate you approximate line loss across your system, use the following rules of thumb: List your ‘Y’ Junctions, ‘T’ pieces, connections, bends and blast gates, and total your hose requirements. Draw out your desired plan, keeping the main line as straight as possible. Try to keep the heavy producers of waste (like thicknesser, lathes etc) closer to the extractor. You need to do a good scale drawing of you workshop layout, position your machines in their ‘in-use’ location, figure out how you want to connect them, and decide where your dust extractor will reside. Now is a good time for you to get out your crayons and paper. This way we can calculate an approximate line loss value across the entire system. To work this out you need to take into account the distance between the extractor and the machine, the machine type and the type of ducting used (flexible or rigid), as well as fittings, bends, etc. Note also that these specs refer to the extraction requirements at the machine (where the hose meets the machine's dust port), not the listed capacity of the dust extractor. A couple of percent here and there will help. These requirements are approximate and are of course heavily dependent on your usage and the type of material being used.īut what about an existing system you want to refine? Go back to basics, strip out some of the fittings, straighten the lines and simplify the whole design. Tablesaw 800cfm (cabinet and overhead guard). Tablesaw: 400cfm (cabinet connection only).We touched on this last time with our graph that illustrated the loss in suction through flexible hose ( click here to refer back to this article).Ī very basic list of machines and their minimum requirements would be as follows: Each type of machine has a certain airflow requirement for effective dust extraction. In this edition I would like to expand on the subject and offer some direction for designing small workshop extraction systems.įirst, we need to look at requirements, specifically considering which machines you have and which machines you plan to add (the latter being the thing most people forget to take into account). I also compared dedicated dust extractors to shop-vac style vacuums, and showed how borrowing the Dyson and trying to cover up the fact that you did is not always the best option. In the last edition of this article, I discussed the advantages of dust extraction, over the ever popular airborne / gravity operated option. Written by Tony Forbes, Maxis Distribution Brand Manger. Click the 'View' button to see the detail of the article. Question: What are the two most common forms of ducting?Īnswer: Modular Steel Ducting and Flexible Polymer Ducting are the two most common types of ducting used in Australia.Following is a list of articles. TALK TO ONE OF OUR DUCTING EXPERTS TODAY ON 1300 138 038 If you are thinking of ducting, then you only need to remember Eximo speedLOCK. Some of the industries that trust Eximo SpeedLOCK ® with their ducting needs If you want us to show you how we can help you with all your ducting needs, contact us today. ®įor the continued safety and wellbeing of our workers and customers, there will be no admittance to the warehouse or the office until further notice.Īll orders and quote requests must be emailed or phoned through, and any payments being made via credit card must be done over the phone prior to goods being collected.Īs a family with members who are high risk, we appreciate your understanding and patience helping us make all transactions contactless.Īs a company that has been in the industrial ducting business for the past 30 years, we literally live and breathe ducting.Īt Eximo speedLOCK ®, we understand what your ducting needs are and what is the best ducting technology for both your application and your budget. When it comes to ducting, there is only one Eximo speedLOCK.
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