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It would seem that LN are also unsure, in that they recommend replacement of their upgraded bearing every 3 years, or 50,000 miles.
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We are quite sure.. Absolutely positive, that the issue is not lubrication.
The single row retrofit bearing is recommended as a 50K component due to it's size and load carrying capacity- nothing more.
The single row bearing simply is not robust enough, even when superior ceramic balls and hardened races are utilized. Two rows are certainly better than one.
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Jake Raby/www.flat6innovations.com
IMS Solution/ Faultless Tool Inventor
US Patent 8,992,089 &
US Patent 9,416,697
Developer of The IMS Retrofit Procedure- M96/ M97 Specialist
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