/material heat treatment code 4t et e f h m 5s hl 4t tapered roller bearings ... et tapered roller bearings carburized alloy steel bearings ... stainless steel bearings high speed steel bearings plated ... bearings ceramic rolling element bearings hl high lubrication roller bearings ... code 1 contact angle deep groove ball bearings type code 6 68 69 60 62 63 78 79 70 72 ... 560 2,360 2,500 angular contact ball bearings a standard contact angle 30° b standard ... contact angle 15° tapered roller bearings b contact angle over 10° c to/including ... ° to/including 32° angular contact ball bearings type code 7 self-aligning ball bearings ...
tolerances necessary when installing bearings on shafts or in housings running ... ring tapered bore deviation and shape error also included are average bore diameter ... raceway width and height variation for thrust bearings running accuracy running ... rolling bearing tolerances have been established according to precision classes jis ... 0 corresponds to normal precision class bearings and precision becomes progressively ... as the class number becomes smaller i.e class 6 is less precise than class 5 ... are applicable to the major bearing types table 6.2 shows a relative comparison ...