HFS (R) Boring Head R8 Shank Carbide Boring BAR Set Bridgeport Milling (F1-2IN 1/2IN 9PCS)

HFS (R) Boring Head R8 Shank Carbide Boring BAR Set Bridgeport Milling (F1-2IN 1/2IN 9PCS)

2" Boring Head With R8 Shank<br> Head size: 2"<br> Boring bar Hole: 1/2"<br> Cross Hole Dia: 1/2"<br> Maximum Offset: 5/8"<br> Thread: 1.5"-18<br> Graduations: 0.001/0-50<br> Center Distance bt 2 bottom hole: 0.60"<br> With R8 Shank<br><br> A micrometer lead screw provides 0.0001" direct reading accuracy and ease of adjusting<br> Double bar holder permits a greater boring range with out an extreme offset condition<br> 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.<br> When the direction of the dial is reversed, the backlash between the gear train is listed below.<br><br> OVERALL LENGTH --- BORE DEPTH --- MIN. BORE<br> 2-1/4" -------- 3/4" --------- 5/16"<br> 2-5/8" -------- 1-1/8" ------ 5/16"<br> 3" -------------- 1-1/2" ------- 5/16"<br> 2-5/8" ------- 1-1/8" ------- 7/16"<br> 3-3/16" ----- 1-11/16" --- 7/16"<br> 3-3/4" ------- 2-1/4" ------- 7/16"<br> 3" ------------- 1-1/2" ------- 9/16"<br> 3-3/4" ------- 2-1/4" ------- 9/16"<br> 4-1/2" ------- 3" -------------- 9/16"<br>