Goodway GA-3600

With a 15 in chuck and Ø105 mm (4.1 in) of bar capacity, the Goodway GA-3600 is the largest-bore machine in the GA box-way range. Spindle speed tops out at 2,500 rpm, the lowest in the series, which is the usual exchange for a spindle that swallows stock this size.

It shares its casting with the GA-3300. Both swing Ø600 mm (23.6 in), turn Ø500 mm (19.7 in), move 260 mm (10.2 in) in X and use an 18.5 kW (24.8 hp) continuous motor that delivers 22 kW (29.5 hp) for 30 min. What the bigger chuck costs is length: the GA-3600 turns 595 mm (23.4 in), 895 mm (35.2 in) or 1,195 mm (47.0 in) between the chuck and the center, a little less than the GA-3300 on each bed. Z-axis travel is 630 mm (24.8 in), 930 mm (36.6 in) or 1,230 mm (48.4 in).

Pipe couplings, flanges and thick-walled tube are the kind of work these figures point to. A Ø105 mm (4.1 in) bar capacity at 2,500 rpm is slow for small bar but well matched to large stock, where surface speed comes from diameter.

Support for long parts comes from a programmable tailstock with a Ø110 mm (4.3 in) quill, 150 mm (5.9 in) of quill travel and an MT#5 live center or MT#4 dead center, and Goodway lists a self-centering steady rest for the series. Tooling is a 10 or 12-station servo turret. Driven tools need the optional 12-station ER32 live tooling turret.