Summary

The INDEX G500 and G520 are turn-mill machining centers designed for complete machining of complex, large-diameter parts, featuring identical main and counter spindles, a maximum chuck diameter of 500 mm, and optional simultaneous 5-axis milling (on G520). These machines support bar capacities up to 120 mm and accommodate up to three tool carriers for flexible turning and milling operations on long workpieces or shaft-type components. Optional turret steady rests and the availability of a modular robot cell enable extended unmanned operation and flexible part handling.

Key Capabilities

• Integrated main and counter spindles for opposing operation
• Simultaneous turning and milling with up to three tool carriers
• 5-axis machining capability (INDEX G520) via motorized milling spindle
• Accommodates parts up to 2,300 mm in length and up to 500 mm diameter
• Supports automated part handling with modular robot cell (iXcenter)
• Optional turret steady rests for long/shaft-shaped part machining
• Siemens S840D sl CNC control for multi-axis coordination

Key Specifications

| Parameter | Value | Unit |

| Turning length (max) | 2,300 | mm |

| Bar capacity | 120 | mm |

| Chuck diameter (max) | 500 | mm |

| Main/counter spindle speed (max) | 2,500 | rpm |

| Main spindle torque at 100% / 40% | 1,595 / 2,000 | Nm |

| Main spindle power at 100% / 40% | 68 / 85 | kW |

| Milling spindle speed (max, G520) | 12,000 (HSK-T63) / 18,000 (Capto-C6) | rpm |

| Milling spindle power (max, G520) | 26 (HSK-T63) / 27.5 (Capto-C6) | kW |

| Tool stations (INDEX G520) | up to 139 | |

| Control | Siemens S840D sl | |