Makino G5

The Makino G5 is a 5-axis horizontal machining center built to grind as well as mill, drill and tap, aimed by Makino at turbine parts. It works on a 250 mm (9.8 in) pallet with 520 mm (20.5 in) of X, 560 mm (22.0 in) of Y and 600 mm (23.6 in) of Z, and its spindle runs to 12,000 rpm. It is the smaller of Makino's two G machines.

Makino's case for the G5 is consolidation. Grinding and milling on one machine means a part can be roughed, ground and finished in a single setup, without the queue and refixturing between a machining center and a separate grinder. For turbine components with ground features next to milled ones, that also removes a datum transfer between machines, which is often where position errors creep in.

The rotary axes are generous for a small pallet: B swings 270° (-90° to +180°) and C turns 360°, so the spindle can reach most faces of a component held on the 250 mm pallet. The work envelope is listed as 440 Ø x 380 SR, and the weight limit is 120 kg (265 lb). This is a machine for small turbine components, not for large housings or cases.

Rapid traverse and cutting feed are both 48,000 mm/min (1,890 ipm). The magazine holds 60 tools. Tools can be 360 mm (14.2 in) long with a CAT shank or 400 mm (15.7 in) with HSK, 70 mm (2.8 in) in diameter or 220 mm (8.7 in) with limitation, and up to 12 kg (26 lb). Makino's short table lists no wheel, dresser or coolant data, so the grinding package has to be specified separately.