Does the 87-093 axle or roller turn in the window frame?

A home owner from Sydney, Australia says:
When opening or closing the window, does the 87-093 axle turn in the window frame or does the axle remain stationary and the roller turns on the axle, i.e. does the axle turn or only the roller?
Your assistance would be appreciated.
Many thanks.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
Good Afternoon,

Only the roller itself should turn. However, I do not see it being a problem if the axle were to turn as well.
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