Wingnuts are used for tightening each of the 8 bumpers to grip the bowl or platter in the chuck. Aluminum spindle 1 1/4 Inch x 8 TPI which is held in place with 10/32 Machine screws and Tee Nuts. Not to be above 600 RPM.
Shown on Powermatic 3520B but will fit any lathe with 1 1/4 x 8 TPI spindle with 16 Inch Bed Swing - Overall diameter is 15 7/8 Inches. Excellent addition to your Woodturning tools!! Once you use this chuck, you will be amazed as how easy it is to grip a bowl or platter to turn the bottom of the item. No need for Jumbo Jaws or Vacuum Chuck to turn the foot of your bowl or platter. The item "Woodturning Wood Lathe Longworth Chuck 16 Bowl Turning Tool Jig 1 1/4 x 8 TPI" is in sale since Tuesday, August 3, 2021.This item is in the category "Crafts\Home Arts & Crafts\Woodworking\Wood Turning Hand Tools". The seller is "junkcars" and is located in Dubuque, Iowa. This item can be shipped to United States.