Upper deviation of base tangent length

Symbol AWe
Unit µm
Attribute-ID upper backlash allowance referenced to span
Numeric ID 776
Value Type PMTechValue

The deviation of base tangent length is the difference between the actual and nominal measurements of the base tangent length.

Instead of the deviation and tolerance series, the deviation of base tangent length AWe and AWi can be entered as values  in µm.

The dimensions are usually entered with a negative sign. If positive values are entered for a gear, care must be taken to ensure that backlash-free gearing is guaranteed. 

The upper deviation of base tangent length AWe must be (according to amount) less than or equal to the lower deviation of base tangent length AWi.