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Hob fixture mounting
Cause & effect's
 Fixture
run out in both Axis should be < 0.010mm ( 0.0004")
Ensure Fixtures are in Good
condition and Gear blank quality is as good as possible
Axial
run out should be < 0.010mm ( 0.0004")
This
type of mounting error shows Profile variation if the gear is checked at 90 Deg.
"Commonly
called 2+2"
 Face
run out should be < 0.010mm ( 0.0004")
This
type of mounting error shows Lead variation if the gear is checked at 90 Deg.
Checklist for Best Practice
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