Sub AllTabs()
Dim ws As Worksheet, ch As ChartObject, x As Axis
On Error Resume Next
For Each ws In ActiveWorkbook.Worksheets
For Each ch In ws.ChartObjects
Set x = ch.Chart.Axes(xlCategory)
If x.MaximumScale < 40000 Then
x.MaximumScale = 260
x.MinimumScale = 220
End If
Next
Next
On Error GoTo 0
End Sub