{"id":"index-traub-g420","model_id":"G420","name":"INDEX G420","summary":"The INDEX G420 is a turn-mill center for complete turning and milling of large workpieces. It has main and counter spindles, a 400 mm chuck, bar capacity up to 120 mm, and a working area that can take up to three tool carriers with Y axes. The document lists tool stock up to 139 tools for the G420 and an iXpanel iX4.0 control based on Siemens SINUMERIK 840D sl.","study_notes":["The technical data section covers INDEX G400 and INDEX G420 together; slash-separated values are not individually assigned in the document.","Turning length is listed as 1,600 / 2,300 mm; the long version measures 5,060 x 3,025 x 3,165 mm and weighs 23,000 kg.","Main spindle torque at 100% / 40% duty is 800 / 1,000 Nm; power at 100% / 25% duty is 34 / 43 kW.","Milling spindle tooling systems: HSK-T63 and Capto-C6; maximum speeds 12,000 rpm and 18,000 rpm; maximum power 26 kW and 27.5 kW; maximum torque 150 Nm and 100 Nm.","Turret tooling systems include HSK-T63 / Capto-C6 and VDI-40; turrets have 12 stations; driven-tool maximum speed is 5,400 rpm.","B-axis swivel angle is +205 / -25 degrees (+/-115 degrees).","Tool stock up to 139 tools is stated for INDEX G420; the technical data table also lists max. 58 / 115 tool places for G400 & G420.","Working area can accommodate up to three tool carriers, each with a Y axis; simultaneous 5-axis machining is possible.","Optional integrated workpiece handling has 2 CNC axes and handles parts up to 25 kg and diameter 120 mm.","Control is iXpanel iX4.0 based on Siemens SINUMERIK 840D sl; this controller is not in the provided controller list.","Connecting power is 112 kW for the long version.","Slide travel Y is listed as +/-170 mm; tool weight max 10 kg, tool diameter max 160 mm, tool length max 500 mm."],"safety_notes":[],"sources":[{"url":"https://www.index-group.com/en/products/turn-mill-centers/index-g400-index-g420","title":"Turn-mill center INDEX G400 / INDEX G420","accessed":"2026-10-26"}],"verification":{"status":"source_checked","checked_at":"2026-10-26","values":8,"method":"llm_source_check"},"updated_at":"2026-10-26","type":"hardware","spec":{"category":"cnc_multitasking","manufacturer":"index-traub","controllers":[],"travel_x_mm":750,"travel_z_mm":1600,"spindle_max_rpm":3000,"spindle_taper":"HSK-T63 / Capto-C6","rapid_traverse_m_min":50,"bar_capacity_mm":120,"max_workpiece_diameter_mm":400,"joints":[],"protocols":[],"standards":[],"error_codes":[]},"url":"https://machineschema.com/hardware/index-traub-g420","license":"https://creativecommons.org/licenses/by/4.0/"}