SKU: LA-VAC Robust Vac Adaptor for Robust, Powermatic

A vacuum adapter is the rotary coupling needed to connect a vacuum hose to the lathe spindle that has a 5/8” ID bore.  It simply slides into the outboard end of the spindle and is held in place with two 0-rings. Apply a dab of petroleum jelly on the O-rings and keep them clean for best results.  The threads for the fittings are standard ¼” NPT (National Pipe Thread), available online or at any hardware store.  

The stem of the vacuum adapter is 5/8″ and fits the American Beauty and Sweet 16 lathes. It also fits the Powermatic 3520 series of lathes (A, B & C) and and the PM 2020 lathe.  

Please note, this adapter may not fit some of the early American made 3520 lathes.  Please check to see if the hole in the outboard end of the spindle is 5/8″ (.625″).

Robust recommends an actual vacuum pump instead of a vacuum generator that runs on compressed air.  Vacuum pumps are quieter, more reliable, and generally pull a more consistent vacuum.