A Comparison of Bearing Manufacturers (NTN, Timken, SKF) Recommendations on Lubrication and Failure Analysis In the world of bearing lubrication and reliability, there are certain concepts that are universally agreed upon and others that are application or OEM centric. This presentation compares how 3 major bearing manufacturers (NTN, Timken, SKF) address common concepts such as lubrication choice and application as well as bearing failure analysis interpretation.