{"id":"grob-g550","model_id":"G550","name":"GROB G550","summary":"The G550 is a 5-axis universal machining center with three linear axes (X/Y/Z) and two rotary axes (A/B) and a horizontally arranged spindle. It performs 5-sided machining and 5-axis simultaneous interpolation on a range of materials, using motorized spindles, disk-type tool magazines and tilting rotary tables.","study_notes":["Positioning accuracy is 0.006 mm in the X-/Y-/Z-axis.","Chip-to-chip time t1 is 2.8 s according to VDI 2852, relative to spindle speed (rpm).","Interference diameter is 900 mm; table diameter is 770 mm.","Table load is stated as 700/800 kg with/without pallet; total weight is 24,800/27,500 kg without/with pallet changer.","A-axis swivel range is 230 degrees, B-axis swivel range is 360 degrees.","Motorized spindle options: HSK-A63 with 83 Nm/12,000 rpm, 206 Nm/16,000 rpm, 47 Nm/18,000 rpm, 47 Nm/21,000 rpm, 63 Nm/30,000 rpm; HSK-A100 with 265 Nm/13,000 rpm, 575 Nm/9,000 rpm, 340 Nm/10,000 rpm, 340 Nm/6,000 rpm, 344 Nm/6,000 rpm.","Knuckle example part: aluminium raw material 450 x 200 mm machined with a 16,000 rpm motorized spindle at 32 kW/206 Nm.","GROB4Pilot machine control panel is available for the SIEMENS 840D sl and HEIDENHAIN TNC 640 control systems.","Tool length for the single disk-type tool magazine is 465 mm (HSK-A63); for the double disk-type magazine 465/280/700 mm (bottom/top/over both disks, HSK-A63).","Tilting rotary tables are offered with parallel T-slots (standard) or a pallet clamping system (option), including A-axis-only and B-axis-only versions.","Options include interpolation turning PLUS, gear hobbing, an energy efficiency package (with SIEMENS control system) and the PSS-L linear pallet storage system connecting up to five machines."],"safety_notes":["GROB Chip-in-Spindle Detection System (SiS) detects tool clamping faults caused by chips between the plain surface and the spindle nose from 10 μm, to avoid rejects and damage.","The pallet changer includes an integrated seating check system and flushing of the zero point clamping system for process reliability during pallet change.","GROB Spindle Diagnostics (GSD) automatically monitors the condition of the motorized spindle to support scheduled maintenance."],"sources":[{"url":"https://www.grobgroup.com/en/products/product-range/universal-machining-centers/milling-centers/g550/","title":"Universal machining center G550","accessed":"2026-10-26"}],"verification":{"status":"source_checked","checked_at":"2026-10-26","values":9,"method":"llm_source_check"},"updated_at":"2026-10-26","type":"hardware","spec":{"category":"cnc_mill","manufacturer":"grob","controllers":[],"axes":5,"travel_x_mm":800,"travel_y_mm":1020,"travel_z_mm":970,"spindle_taper":"HSK-A63","rapid_traverse_m_min":80,"joints":[{"name":"A-axis"},{"name":"B-axis"}],"protocols":[],"standards":[],"error_codes":[]},"url":"https://machineschema.com/hardware/grob-g550","license":"https://creativecommons.org/licenses/by/4.0/"}