{"id":12881,"date":"2018-09-10T15:35:07","date_gmt":"2018-09-10T20:35:07","guid":{"rendered":"http:\/\/www.pdblowers.com\/?post_type=product&#038;p=12881"},"modified":"2020-06-03T16:39:52","modified_gmt":"2020-06-03T21:39:52","slug":"315-af-roots-blower","status":"publish","type":"product","link":"https:\/\/www.pdblowers.com\/product\/315-af-roots-blower\/","title":{"rendered":"315 AF Roots Blower"},"content":{"rendered":"<p><strong>Roots model 315 AF Blower<\/strong><\/p>\n<p>Flow Range: to 29 CFM<br \/>\nMax \u0394Pressure: 8 psi<br \/>\nMax \u0394Vacuum: 10&#8243; Hg<br \/>\nMaximum Speed: 1850 RPM<br \/>\nMinimum Speed: 1090 RPM<br \/>\nMax \u0394T: 332\u00b0 F<br \/>\nConnection Size: 0.75&#8243;<br \/>\nShaft Diameter: 0.6562&#8243;<br \/>\nDrive End Lubrication: Grease<br \/>\nGear End Lubrication: Oil<br \/>\nRequired Oil for Gear End: 6 Fl Oz<br \/>\nUnit Weight: 75 lb<\/p>\n<p>The Roots rotary blower AF Series are now obsolete, replaced by the\u00a0<a href=\"http:\/\/www.pdblowers.com\/product-category\/blowers\/roots-universal-rai-urai\/\">Universal RAI<\/a>\u00a0series.<\/p>\n<p>The AF Series were standard duty units suitable for either pressure or vacuum service. The basic model is suitable for rotation in either direction consisted of a grey iron casing, alloy steel gears, grey iron impellers and anti-friction ball bearings. The unit has splash oil lubrication on the gear end and grease lubrication on the drive end.<\/p>\n<p>By today&#8217;s standards, these units were operated very slow and were limited in maximum allowable pressure and vacuum.<\/p>\n<p>Features that make the Roots rotary blower AF Series distinctive over the current <a href=\"http:\/\/www.pdblowers.com\/product-category\/blowers\/roots-universal-rai-urai\/\">Universal RAI<\/a> are as follows:<\/p>\n<ul>\n<li>Mounting Feet are cast into the headplates versus removable mounting feet on current Universal RAI frames<\/li>\n<li>Cast iron gear housing versus cast aluminum on current Universal RAI&#8217;s<\/li>\n<li>The AF series is only available as a horizontal unit (vertical air flow) with a left hand shaft<\/li>\n<li>The unit will have a threaded inlet and discharge connection versus threaded as well as flanged connections on the current Universal RAI<\/li>\n<li>Shaft sizes on the 2&#8243; through 5&#8243; frames are an \u201codd ball\u201d size \u2013 it will be difficult to find bushings to match these sizes<\/li>\n<\/ul>\n<p>In general, you can determine the flow of the units below by multiplying the cfr by the RPM you are currently running then by 0.75. This will actually give you a close estimate when compared to the actual flow which takes into account slip inside the unit.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Roots model 315 AF Blower Flow Range: to 29 CFM Max \u0394Pressure: 8 psi Max \u0394Vacuum: 10&#8243; Hg Maximum Speed: 1850 RPM Minimum Speed: 1090 RPM Max \u0394T: 332\u00b0 F Connection Size: 0.75&#8243; Shaft Diameter: 0.6562&#8243; Drive End Lubrication: Grease Gear End Lubrication: Oil Required Oil for Gear End: 6 Fl Oz Unit Weight: 75 [&hellip;]<\/p>\n","protected":false},"featured_media":12863,"template":"","meta":{"_acf_changed":false},"product_cat":[715],"product_tag":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>315 AF Roots Blower | pdblowers, Inc.<\/title>\n<meta name=\"description\" content=\"Visit pdblowers for information about the 315 AF Roots Blower . 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