The Robust 4-1/2″ Vacuum Chuck with Rotary Adaptor is machined from solid 6061 Aluminum. The flexible polymer seal has multiple sealing ridges to give a positive hold on the project. The chuck is threaded for 1-1/4″ x 8 TPI lathe spindles only and comes with a Tommy-bar for removal. This is Robust's midsize vaccuum chuck, so if you are planning on only getting one, this would be best all around choice. With a vacuum of 20-25″ of mercury, this chuck should provide approximately 135 to 170 lbs. of holding force.

This chuck includes a Rotary Adaptor and tube to go through the spindle. The built in rotary adapter consists of two precision sealed bearings and a stainless steel hose barb. You will attach a piece of tubing (included) to the barb that will run through the spindle hole of your lathe, providing the hole is bigger than .4″ or about 10mm. The tube from your vacuum pump will then attach to this tubing.

This item is shipped from the manufacturer. Air shipping and international shipping are not available for this item. Ships to the 48 contiguous states only. It is not available for pick up at our facility.

NOTE: This chuck is used for lathes other than Robust or Powermatic 3520A, B, C.

Thumbnail Filmstrip of Robust 4-1/2" Vac. Chuck w/ Rotary Adaptor Images

SKU: VAC-4-5-A Robust 4-1/2" Vac. Chuck w/ Rotary Adaptor