Index MS22-8 CNC Multi-Spindle Turning Machine

The INDEX MS22-8 is an eight-spindle CNC multi-spindle turning machine for bar of 22 mm (0.87 in); the table also gives 24 mm (0.94 in) in brackets without saying when that larger size applies. All 8 work spindles reach 10,000 rpm, with the limit depending on bar diameter, bar guide and workpiece clamping. Each is rated 8.7 kW at 100% duty and 15 kW at 25% duty (11.7 / 20.1 hp), and 10 Nm / 18 Nm (7.4 / 13.3 ft-lbf).

Eight positions served by 16 tool carriers means more operations can run in parallel. A part's work can be split into shorter steps, and since the slowest station sets the cycle, that is where the extra positions pay off. The slides travel 62 mm (2.44 in) in X and 85 mm (3.35 in) in Z. The table lists 24 mm (0.94 in) of Y travel, and the Y-axis itself appears among the options, so check that it is on the quoted machine. Polygon turning, hobbing, tool monitoring and the transmit function are options too.

The back end takes 1 or 2 synchronous spindles, each clamping 22 mm (24 mm), running to 10,000 rpm and rated 9.2 kW at 100% / 12 kW at 40% duty with 11 / 14 Nm. They swivel through 138° and travel 120 mm (4.72 in) in Z. Rear-end machining has 3 / 6 tools, of which 2 / 4 are live, and an optional back-boring slide with 1 or 2 tool carriers and 62 mm (2.44 in) of X.

Control is the Siemens Sinumerik 840D Solution Line. In maximum configuration, without bar guide or loading magazine, the machine is 3,349 x 2,032 x 2,854 mm (131.9 x 80.0 x 112.4 in) and approx. 7,100 kg (15,653 lb). Connected power is 53-77 kW (63-91 kVA, 91-131 A) at 400 V, 50/60 Hz, depending on I/O devices. The MS16C carries the same spindle rating and weighs approx. 5,200 kg (11,464 lb).