AS27644/1A BEARING, BALL, AIRFRAME, ANTI-FRICTION, DOUBLE ROW, HEAVY DUTY, CORROSION RESISTANT NITROGEN STEEL (CREN)

THIS DOCUMENT REVISION ADDS THE FULLY SUBSTANTIATED AMS5655 MATERIAL FOR THE RINGS AND THE HEAT TREAT REQUIREMENT. AMS3666 IS BEING REMOVED AS A SEAL MATERIAL AS NO SUPPLIER UTILIZES IT ON THIS SERIES. THE LUBRICATION IS BEING REVISED FROM A TRADE NAME TO AN INDUSTRY AVAILABLE SPECIFICATION MIL-PRF-23827 TYPE 1. ZINC NICKEL PER AMS2417 WILL BE INDICATED BY “E” SUFFIX. PASSIVATION IN ACCORDANCE WITH AMS2700, METHOD 1 (NITRIC ACID) OPTION ADDED. CRES BALLS WILL BE INDICATED BY “T” SUFFIX.