Preparation for installing the NTN spherical roller bearings
1.Unpack the NTN spherical roller bearings just before the installation work
2.If the Spherical roller bearing is to be grease-lubricated,the rust-proof coating on it may remain unremoved.if it is to be oil-lubricated,remove the coating with benzene or kerosene.
3.For the NTN spherical roller bearings with an adapter,check its radial clearance before the installation work,to do so,place it ona a flat work bench, and fit a thickness gage between the uppermost roller and the raceway surface on the outer ring to measure the clearance. do not force the thickness gage in or turn the NTN spherical roller bearings,otherwise, the resultant clearance measurement will be greater than the actual clearance.
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