{"id":"grob-g340","model_id":"G340","name":"GROB G340","summary":"The GROB G340 is a machining center with four motor spindles arranged in parallel, allowing four workpieces to be machined at the same time in one cycle. It has a swivel/rotary table and horizontal motor spindles, and workpieces are machined from above so chips fall away. It is built for high-volume series production and can run as a standalone machine or be integrated into automated lines with gantry, robot or cell automation.","study_notes":["Working travels X/Y/Z are 650/1,050/920 mm; the Y travel is 1,300 mm only on the AF machine version.","Maximum axis speeds are given as 90 m/min in X, 50 m/min in Y and 120 m/min in Z.","Spindle speed range is 12,000 to 18,000 rpm; four motor spindles are arranged in parallel.","Chip-to-chip time t1 according to VDI 2852 is 2.4 s with a SIEMENS control system.","Interference diameter is stated as 4x698 mm.","Positioning accuracy in X/Y/Z is 0.006 mm according to ISO 230-2:2014 (accuracy, not repeatability).","Table load is 4x350 kg across the A- and B-axis tables.","Axis concept combines linear and rotary axes to give 5-side machining in a single setup.","Chip disposal is handled by a flushing trough, a conveyor system or direct discharge.","Typical workpieces listed are stator housings, knuckles and front knuckles in aluminium alloy, plus hydraulic and medical components."],"safety_notes":[],"sources":[{"url":"https://www.grobgroup.com/en/products/product-range/machining-technology/g-modules/g340/","title":"G340 – Four-spindle machining center from GROB - GROB","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":[],"weight_kg":36500,"travel_x_mm":650,"travel_y_mm":1050,"travel_z_mm":920,"spindle_max_rpm":18000,"spindle_taper":"HSK-A63","rapid_traverse_m_min":120,"table_load_kg":350,"joints":[],"protocols":[],"standards":[],"error_codes":[]},"url":"https://machineschema.com/hardware/grob-g340","license":"https://creativecommons.org/licenses/by/4.0/"}