{"product_id":"air-ring-gage-center-jet-arc","title":"Center-Jet Air Ring Gage (ARC)","description":"\u003cp\u003eThe center-jet air ring (ARC) measures shafts, pins, valve spools and turned diameters without touching them. The jets sit at mid-width of the ring, which gives the best wear life for diameters that run the full length of the ring.\u003c\/p\u003e\n\u003cp\u003eNeed to measure close to a shoulder? Use the \u003ca href=\"\/products\/air-ring-gage-shoulder-jet-ars\"\u003eshoulder-jet (ARS)\u003c\/a\u003e or \u003ca href=\"\/products\/air-ring-gage-extra-close-arx\"\u003eextra-close (ARX)\u003c\/a\u003e ring.\u003c\/p\u003e\n\u003ch2\u003eTwo jets or three?\u003c\/h2\u003e\n\u003cp\u003eTwo opposed jets read diameter at every angle. Centerless-ground parts are often slightly three-lobed, which two jets can't see; a three-jet ring (add \u003ccode\u003e-3J\u003c\/code\u003e) picks up the lobing and reads average diameter. Sizes .061″ to .183″ are made as three-jet carbide rings only.\u003c\/p\u003e\n\u003ch2\u003eHow to order\u003c\/h2\u003e\n\u003cp\u003eRing part numbers follow the same order as probes: style, jet code with clearance class (Dual Master) or spec code (Single Master), material, then size. Dual Master rings take the min\/max shaft sizes and come with a 4 ft (1.22 m) hose; Single Master rings take the nominal master size, and the hose is ordered separately.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003cth\u003eDual Master\u003c\/th\u003e\n\u003cth\u003eSingle Master\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRing bore\u003c\/td\u003e\n\u003ctd\u003eMaximum shaft size + clearance\u003c\/td\u003e\n\u003ctd\u003eNominal master size + clearance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSet with\u003c\/td\u003e\n\u003ctd\u003eTwo setting discs (min and max)\u003c\/td\u003e\n\u003ctd\u003eOne setting disc at nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eTurn it into a gaging station\u003c\/h2\u003e\n\u003cp\u003eBase stands hold the ring upright on the bench, vee guide chutes feed long parts such as valve spools straight through, and guide pins steady short parts. Each is fitted to the ring at the factory, so order it with the ring. For shafts that stay on the machine, use an \u003ca href=\"\/collections\/air-snap-gages\"\u003eair snap gage\u003c\/a\u003e. Set the ring with \u003ca href=\"\/products\/master-setting-disc\"\u003emaster setting discs\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eFull dimensions are in the \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0843\/0052\/9919\/files\/Air_Gaging_LLC_Air_Tooling_Catalog.pdf\"\u003eair tooling catalog (PDF)\u003c\/a\u003e.\u003c\/p\u003e","brand":"Air Gaging LLC","offers":[{"title":"Default Title","offer_id":50543241232639,"sku":null,"price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0843\/0052\/9919\/files\/air-ring-gage-center-jet-arc.jpg?v=1790459495","url":"https:\/\/airgaging.com\/products\/air-ring-gage-center-jet-arc","provider":"Air Gaging LLC","version":"1.0","type":"link"}