12-Pack Set 3 Boring Head R8 Shank 3/4 Carbide Boring Bar, Replacement

  
12-Pack Set 3 Boring Head R8 Shank 3/4 Carbide Boring Bar, Replacement for Bridgeport Milling. 3 Boring Head With R8 Shank; Head size: 3 ; Boring bar Hole: 3/4 ; Cross Hole Dia: 3/4 ; Maximum Offset: 1. Tool set made of high quality steel with great match of hardness and toughness, thus prolongs its service life. 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. Packing including: 1 x 3 Boring Head, 1x R8 Shank, 12 x 3/4 Carbide Boring Bar, 1 x Allen Wrench.

2 Boring Head R8 Shank. 3/4 Boring Bar hole diameter.

R8 shank can be fitted on a 2", 3", or 4" boring head with 1.5"-18 thread size. 12 PCS carbide tip boring bar set. For R8 spindle machines Hardened and ground. Shank Diameter 3/4 12 pcs.

When the direction of the dial is reversed, the backlash between the gear train is listed below. Overall Length --- Bore Depth --- Min. 3-11/16" ------ 1-11/16" ------ 7/16. 4-1/4" ------ 2-1/4" ------ 7/16.

3-1/2" ------ 1-1/2" ------ 9/16. 4-1/4" ------ 2-1/4" ------ 9/16.

5" ------ 3" ------ 9/16. 3-7/8" ------ 1-7/8" ------ 11/16.

4-13/16" ------ 2-13/16" ------ 11/16. 5-3/4" ------ 3-3/4" ------ 11/16. 4-1/4" ------ 2-1/4" ------ 13/16. 5-3/8" ------ 3-3/8" ------ 13/16. 6-1/2" ------ 4-1/2" ------ 13/16.

1 x 3 Boring Head. 12 x 3/4 Carbide Boring Bar.