This table applies to bearings contained in the catalog For information concerning other bearings or bearings using US customary unit please contact NTN Engineering 2 The correlation of axial internal clearance (∆a) and radial internal clearance (∆r) is expressed as ∆r = 0667 ・ e・∆a e Constant (see dimensions table)
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1/e ………（16） L1 e L2 e Ln e where e = 10/9For ball bearings e = 9/8For roller bearings L Total basic rated life of entire unit h L1 L2 …Ln Basic rated life of individual bearings 1 2 …n h When the load conditions vary at regular intervals the life can be given by formula (17) Lm＝（ΣΦ j ／Lj
E Outer ring Inner ring Roller Cage Spherical roller bearing Fig F Shaft raceway washer Housing raceway washer Ball Cage Thrust ball bearing Fig G Roller Shaft raceway washer Housing raceway washer Cage Thrust roller bearing Fig H Fig 11 Rolling bearing 1 Classification and Characteristics of Rolling
