With the continuing evolution of machining requirements to satisfy new aircraft and power generation production needs, Mitsui Seiki USA Inc. has released several new 4- and 5-axis machining centers. While market conditions were sluggish, Mitsui Seiki was seriously investing in new product development. The results of this effort are several successes in large machine installations at major aerospace and energy OEMs. These companies make air frame components, propulsion systems, landing gear assemblies, wind turbine gear boxes, and gas turbine power generation systems. New features and specifications for their 5-axis horizontal machining centers include up to 2500mm (98.4") work diameter capacity, 3 tonnes (6,600 lbs.) work/fixture weight capacity, variety of increased axis stroke options, larger pallet sizes than previous models (1,200mm square, 1,200mm x 1,500mm, 1,900mm diameter), ultrahigh-torque spindles (2,700Nm — 1,990 lbs.-ft. continuous), tuned structure for heavy cutting in hard metals, large capacity FMS systems, and latest Fanuc 30i CNC with enhanced features for 5-axis machining. Further, Mitsui Seiki adds to the capacity of its line up of 4-axis machining centers, including new quill-type spindles for deep-boring operations, 5 and 10 tonnes (11,000 and 22,000 lbs.) work/fixture weight capacity, up to 3m (118") axis stroke, ultrahigh-torque spindles (2,700Nm — 1,990 lbs.-ft. continuous), tuned structure for heavy cutting in hard metals, large capacity FMS systems, and the latest Fanuc 30i CNC with enhanced features for precision machining.