{"id":13670,"date":"2019-01-03T17:13:53","date_gmt":"2019-01-03T22:13:53","guid":{"rendered":"https:\/\/www.pdblowers.com\/?post_type=product&p=13670"},"modified":"2020-06-03T16:39:59","modified_gmt":"2020-06-03T21:39:59","slug":"74-rai-roots-blower","status":"publish","type":"product","link":"https:\/\/www.pdblowers.com\/product\/74-rai-roots-blower\/","title":{"rendered":"74 RAI Roots Blower"},"content":{"rendered":"

Roots model 74 RAI Blower<\/strong><\/p>\n

Flow Range: to 493 CFM
\nMax \u0394Pressure: 13 psi
\nMax \u0394Vacuum: 16" Hg
\nMaximum Speed: 1750 RPM
\nMax \u0394T: 332° F
\nConnection Size: 4" NPT
\nShaft Diameter: 1.4375"
\nDrive End Lubrication: Grease
\nGear End Lubrication: Oil
\nRequired Oil for Gear End: 48 Fl Oz Horizontal unit, 22 Fl Oz Vertical unit<\/p>\n

The Roots rotary blower RAI Series are now obsolete, replaced by the\u00a0Universal RAI<\/a>\u00a0series.<\/p>\n

The RAI blowers were standard duty units available in either vertical or horizontal construction for easy adaptability. The basic model consisted of a cast iron casing, alloy steel gears, steel shafts, cast iron involute impellers, ball bearings, splash lube on gear end, and pressure lube on drive end. Maximum gear speed was 3,000 FPM.<\/p>\n

Features that make the Roots rotary blower RAI Series distinctive over the current Universal RAI<\/a> are as follows:<\/p>\n