3 Boring head R8 Shank + 8pcs Indexable 3/4 Boring Bar Set TCMT Save $144 R

Shars 3" Boring head R8 Shank + 8pcs Indexable 3/4" Boring Bar Set New. 3 Boring Head With R8 Shank. Min Boring Diameter: 0.375. Center Distance bt 2 bottom hole: 5/8. A micrometer lead screw provides 0.0001 direct reading accuracy and ease of adjusting. Double bar holder permits a greater boring range with out an extreme offset condition. 1 DIV = 0.001"Ø??? 0.001" Ø, meaning on the 0-50 dial, when turning the dial by 1 division/graduation, the boring head's travel is 0.001" in radius movement, 0.002" in diameter movement.

When the direction of the dial is reversed, the backlash between the gear train is listed below. Internal bore within H7 specification to give tight fitting with cutting's shank. Nickel plate finished have a great advantage over black oxided finish. 1 division is equaled to 0.0001 travel in diameter. Round shanks allow the operator to set positive or negative rake.

Chip breaker eliminates long stringer chips. A new cutting edge may be presented by simply indexing the insert. It is not necessary to remove tool from chuck or tool post. C6 grade: carbide for steel and alloy steel.

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