NT#40 milling machine spindle quill doesn't return all the way? Here's a quick fix.
Replacement milling machine quill return clock spring can be used to restore the spindle quill's return to like-new condition on Eisen NT#40 milling machines ( model S-4A and S-4AL) and other Taiwan-made milling machines with NT40 spindle.
The height of the NT40 clock spring is 30 mm (for R8 clock spring it is 25mm).
In its spooled state (like shown in photo), the inner diameter is 29mm, the outer diameter is 45mm.
Part number: PY4-FB-178