GL4-A40TGL-12-56 is a left internal turning holder with internal cooling for GL indexable cutting inserts. It features a reinforced body and a cutting edge for process reliability. The holder is suitable for internal grooving, turning, and profiling. The body is surface-treated for longer tool life. The MM geometry is applicable only when DMIN >= 68 mm.

Additional technical specifications:

• Minimum bore diameter: 56 mm
• Type: System G
• Gross weight: 2704.8 g
• Cutter design: GLAG (RL) INT
• Functional width: 32.1 mm
• Functional length: 300 mm
• Head length: 53 mm
• Maximum depth of cut: 12 mm
• Net weight: 2700 g
• Shank height: 38 mm
• Cutting width: 4 mm
• Clamping diameter: 40 mm.