Kitamura Bridgecenter-8G #50

The Kitamura Bridgecenter-8G #50 combines a geared No. 50 taper spindle, running from 35 to 12,000 rpm, with 2,032 mm (80 in) of X travel and a 900 x 2,500 mm (35.4 x 98.4 in) table that carries 3,500 kg (7,700 lb). Long steel parts are its natural work: machine bed components, large mould frames, press plates and long weldments that need real cuts along their whole length.

The four-step gear drive is there for low-speed torque, and the 50 taper for the tool stiffness that heavy milling demands. HSK-A100 is offered as an alternative to the standard NST No. 50. The spindle's power and torque are not stated in the table. On a machine bought for stock removal those are the first two numbers to obtain. The electrical supply is 45 kVA at 200 V AC, three-phase.

Y travel is 1,095 mm (43.1 in), wider than the 900 mm table, and Z is 710 mm (28 in). A long 50-taper tool plus a fixture leaves limited height under the spindle, so tall parts deserve a clearance check on a layout before the order is placed. If height or width is the constraint, the Bridgecenter-10G moves to 1,615 mm (63.6 in) of Y and 800 mm (31.5 in) of Z over a 1,370 x 3,000 mm (53.9 x 118.1 in) table.

A 40 tool magazine is standard, with 60 and 80 tool magazines as options. Rapids are 24 m/min (945 ipm), and listed accuracy is ±0.002 mm (±0.000079 in) over the full stroke with ±0.001 mm (±0.000039 in) repeatability. Buyers whose long parts are aluminium, cut with small tools, should look at the Bridgecenter-8G #40 and its 20 to 20,000 rpm spindle.