Citizen Miyano ANX-42SYY

The Miyano ANX-42SYY is a two-spindle turning center for 42 mm dia. bar with two tool posts, each a 12st. turret, up to 24 rotary tools and Y axes on two slides. Spindle speed runs to 6,000 rpm and the maximum machining length is 130 mm, so it is built for short, feature-heavy parts made in volume.

Speed of the axes is its most distinctive figure set. Citizen lists feed rates of 24 m/min on X1, X2 and X3 and on Z1 and Z2, 30 m/min on Z3 and 18 m/min on Y1 and Y2. On small parts with many short moves, those rates and the second turret are where cycle time is saved, because tool changes and positioning make up much of the cycle.

The spindle motor is rated 11/7.5 kW (10min/cont.): 11 kW is the 10min rating and 7.5 kW the continuous one. Rotary tools run to 6,000 rpm on a 2.2 kW motor, which suits cross drilling, tapping and light milling on 42 mm dia. stock more than heavy pocketing. Workholding is a collet chuck of the DIN173E, HAINBUSH or H-S20 type, or a 5" power chuck; turning tools are 20 mm Sq. and the tool post holes 25 mm dia.

For installation, Citizen gives a power requirement of 34 kVA and an average of 18.4 kVA in load operation, a floor area of W2,650×D1,645 mm and a machine weight of 6,250 kg. That is a much heavier machine than the Miyano BNA-42SY at 3,880 kg or the Miyano BNA-42CY at 3,220 kg.