2" Boring Combo Set Includes Head R8 Shank & 1/2" Bars Kit for Bridgeport Mill. Kit includes 2 boring head, R8 shank, & 9 piece C6 carbide tipped boring bar set. 2" Boring head features: 0.002" graduation, 5/8" max offset, up to 1/2" tool capacity, bar holder moves freely & smoothly, rigid design for precise hole size accuracy. Designed for excellent performance in many applications! R8 shank features: 7/8"-20, made of high grade tool steel, hardened & ground, 7/16"-20 internal thread drawbar end.
1/2 Shank boring bar dimensions are below. All boring bar shanks are held to 0.0000-0.0005 from the nominal diameter and made of special heat treated alloy steel. Minimum Boring Range: 5/16" - 9/16" (see below). Overall Length: 2-1/4" to 4-1/2" (see below).Boring Depth Range: 3/4" to 3" (see below). 5/16 minimum bore 1 ea.
3/4" bore depth x 2-1/4" overall, 1 ea. 1-1/8" x 2-5/8", & 1 ea. 7/16 minimum bore 1 ea. 1-1/8" bore depth x 2-5/8" overall, 1 ea. 1-11/16" x 3-3/16", & 1 ea.9/16 minimum bore 1 ea. 1-1/2" bore depth x 3" overall, 1 ea. 2-1/4" x 3-3/4", & 1 ea. We also sell custom tooling packages!