Can any one suggest what Oil cleanliness level should be maintain in Helical Gear Box Lub Oil ISO VG 320 ?
Meshing gears have a lot more back lesh then at least 100 Micron, so does it need super clean Oil (Say NAS - 8 /7 or NAS - 6 )?
Of Course bearings are also lubricated with the same oil so cleaner the oil, better is the life of bearing. But for meshing gears does super clen oil is required ?
I will prefer your answer Yes or NO. and if yes then why ?
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