The Morse #1 to 7/8-20 Criterion Boring Head (P/N 12131) mounts directly into the Morse #1 taper on our standard headstock spindle with our 1/4-20 x 5″ drawbolt and washer (not included).
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Morse #1 Arbor to 7/8-20 Criterion Boring Head
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Spindle “Tommy” Bar
Spindle “Tommy” Bars are use to aid in the operation of opening and closing scrolling chucks and in the headstock spindle to provide leverage when unthreading tooling. They have a diameter of 5/32″ and are 3-1/8″ long.
