industry air system technology founded 1919 headquarters coburg germany key people frank mueller president of kaeser us thomas kaeser chairman president & ceo carl kaeser sr. founder deceased products air solutions tools dryers blowers revenue 116 million usd 2013 number of employees 400 2008 website http us.kaeser.com kaeser compressors inc. manufactures compressed air and vacuum products including rotary screw compressors oil less reciprocating compressors rotary lobe blowers refrigerated and desiccant dryers filters condensate management systems and other related products . the company provides service rentals and consulting services . kaeser compressors inc. is a us affiliate of kaeser kompressoren headquartered in coburg germany . contents 1 history 2 sigma profile rotors 3 production 4 certifications and partnerships 5 references 6 external links history edit carl kaeser sr. founded the kaeser organization as an engineering workshop that produced car and engine parts in 1919 . soon after the factory was reconditioning engines producing gears and building special purpose machines for the local glass industry . it wasn t until the post war need for compressed air in the rebuilding of germany that the company began manufacturing and developing air compressors . the company grew rapidly after turning out its first reciprocating compressor in 1948 and by 1960 had outgrown its facility of 38 years and moved to a new location in coburg germany . under the leadership of carl kaeser jr. kaeser engineers developed a rotary screw compressor that featured the sigma profile airend in the early 1970s . the first compressor to incorporate the sigma profile was delivered in 1975 . now represented in every major industrialized country in the world kaeser established its first subsidiary in switzerland by the late 1970s . the us subsidiary is the largest . reiner mueller started the us subsidiary in fredericksburg va in 1982 . fredericksburg is near to several transport centers and remains home to the us headquarters . the 16 acre 65 000 m2 site includes a 117 500 square foot 10 920 m2 facility . reiner mueller retired in december 2008 and his son frank assumed leadership in january 2009 . carl kaeser jr. who started with kaeser kompressoren in 1937 worked until the day he died in 2009 . thomas kaeser assumed leadership of kaeser kompressoren after his father carl died at the age of 95 . kaeser s manufacturing facilities in europe consist of a group headquarters in coburg germany that produces rotary screw reciprocating and portable compressors and a plant in gera germany that produces refrigeration dryers and rotary blowers . also the company has a sheet metal plant near coburg in sonnefeld . sigma profile rotors edit when developing the sigma profile in the nineteen seventies the kaeser engineering team was faced with overcoming the disadvantages that previous screw designs presented to the market . those previous designs included an energy consuming symmetrical profile and an asymmetric design introduced in 1962 that was an improvement over the symmetrical design but still consumed more energy than a reciprocating compressor . kaeser engineers introduced the sigma profile with a five to six lobe asymmetrical design . the design required closer tolerances between the rotors and the housing resulting in fewer air back flow losses . kaeser s design philosophy remains to develop larger slower running airends . airends turning at slower speeds deliver more compressed air for the same drive power up to 20 % more efficient than conventional screw designs . oil flooding at the point of compression provides cleaning lubrication and cooling which contributes to airend efficiency . sigma profile airends are now found in a range of compressors from 3 to 600 hp 2.2 to 447.4 kw . kaeser continues to refine and improve the airend design up to 1000 hp . production edit kaeser s screw compressor rotors and airend castings are created in climate controlled environments . precision milling machines mill the screw compressor rotors to fine tolerances and cnc machining centers with pallet changing systems allow for 24 hour automatic machining of the airend castings . a 3d coordinate measuring machine automatically checks the critical dimensions of the airend casing . cnc profile grinders finish the rotors to micrometre tolerances following solution hardening of the milled rotors within controlled atmosphere heat treating ovens . certifications and partnerships edit iso 9001 quality system certification us obtained certification in 1997 iso 14001 environmental standard us obtained certification in 1998 allied partner with the us department of energy 2001 energy star partner us partnered in 2009 references edit this article includes a list of references related reading or external links but its sources remain unclear because it lacks inline citations . please help to improve this article by introducing more precise citations . october 2009 learn how and when to remove this template message kaeser kompressoren 1999 . kaeser kompressoren 80 years of tradition and progress . kaeser literature freehling bill 2008 november 2 . change comes to kaeser . retrieved november 3 2008 from http fredericksburg.com news fls 2008 112008 11022008 422108 kaeser kompressoren 1992 . kaeser compressors . kaeser literature us department of energy office of energy efficiency and renewable energy 2002 april . kaeser compressors partnering for success 22 . 5 . pollok murray 2009 august 4 . compressor pioneer carl kaeser passes away . retrieved january 21 2010 from http www.khl.com magazines international rental news detail item41979 compressor pioneer % 20 carl % 20 % 20kaeser % 20passes away external links edit company website retrieved from https en.wikipedia.org w index.php title kaeser compressors & oldid 724995930 categories engineering companies of germanyhidden categories pages using infobox company with 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