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FAQ (frequently asked questions)
General
Does internal clearance effect the bearing precision?
Is it safe to use a C3 fit in place of a standard fit?
What is preload?
What is the difference between LLB & LLU seals?
Does NTN have field technical support? How does a visit get scheduled?


Angular contact ball bearings
What is the difference between angular contact bearings and deep groove ball bearings?
What is back-to-back and face-to-face in angular contact bearings?


Tapered roller bearings (TRB)

Are your TRBs the same as Timken? Are they interchangeable with Timken?
What is case hardened steel and what is through hardened steel?
Does NTN make tapered roller assemblies?
Does NTN make extra precision tapered roller bearings?
What is the recommended end play for tapered roller bearings?


Spherical roller bearing

What is the difference between B type sphericals and C type?
Why does NTN use asymmetric rollers in their sphericals…is there an advantage?


Nomenclature

What does this prefix or suffix mean?
What is the nomenclature for Precision Bearings?
What is the designation for a bronze cage?
What is the designation for a tapered bore?
What does V1, V2, V3,… mean at the end of the deep groove ball bearing nomenclature?


Lubrication

What is good high temperature grease?
How much grease is too much?
What grease can be used when performing maintenance on mounted units?
 
 

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