ntn large size long life bearings ea type a newly developed special heat ... treatment allows these bearings to ensure longer operating life under ... severe operating conditions ea bearings have a particularly strong advantage by ... lubricant is clean accordingly these bearings can be used at steel rolling mills and ... and impact loads often exist the ea bearings provide advantages due to their compact ... life and strength comparison of ea bearings against standard carburized bearings 1 ... against crack fatigue is 1.5 times ea bearings are produced by a special heat treating ... is especially used for larger size bearings the heat treatment combines ... heat treatment is applied to tapered rollerbearings cylindrical rollerbearings ... and self-aligning sphericalrollerbearings consult ntn corporation for available ...