APT Tri-Lead 3 Piece Indexable Boring Bar Set, 3/4″ Shank Dia. – TL75

• Internal Turning
• Furnished in (4) lengths: (3) for boring, (1) extra for lathe work
• Made of tempered alloy steel for proper boring rigidity.
• Chipbreaker feature of bar breaks chip into small tight rolls.
• Cartridges are hardened to Rc 60 – 64 and ground to +.0005″ accuracy to assure proper seating of cutting insert.
• Cutting inserts can be indexed or replaced without loss of hole size or depth.
• Flat sides on bar can be mounted in square lathe turrets or in round holes providing three point suspension for maximum rigidity.
• Coolant Use: No
• Lead Angle: 85-95
• All bars complete with (1) CP-0 cartridge, (1) clamp, (1) chipbreaker, (1) cartridge shim and (1) cutting insert.
• Bars use standard 3/8″ I.C. triangular inserts.
• Accepts TPG32_ TPGR32_ TPMR32_ TPU32_
• Right Hand
• Insert Not Included.

Includes:
(1) TL344 (3/4″ Shank X 4.0″ OAL) (1) TL345 (3/4″ Shank X 5.5″ OAL) (1) TL346 (3/4″ Shank X 7.0″ OAL)

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