GL4-A25QGR-12-40 is a right-hand 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 only applicable when DMIN >= 68 mm.

Additional technical specifications:

• Minimum bore diameter: 40 mm
• Type: System G
• Gross weight: 582 g
• Cutter design: GLAG (RL) INT
• Functional width: 24.6 mm
• Functional length: 180 mm
• Head length: 43 mm
• Maximum depth of cut: 12 mm
• Net weight: 580 g
• Shank height: 23 mm
• Cutting width: 4 mm
• Clamping diameter: 25 mm.