Mazak HCN-6800 NEO

The Mazak HCN-6800 NEO is where the HCN NEO range steps up from the CAT No.40 spindle of the HCN-5000 NEO to 50-taper tooling. It is a horizontal machining center with a CAT No.50 spindle, a 2 pallet changer and travels of 41 in (1,041 mm) on X, 35 in (889 mm) on Y and 39 in (991 mm) on Z. Mazak places it in the group of models with pallets from 24.8 in × 24.8 in.

The spindle runs to 10,000 rpm and is rated 45 kW (60 HP) at 40% ED and 37 kW (50 HP) continuous, with 350 Nm (258 ft-lb) at 40% ED and 239 Nm (176 ft-lb) continuous. Compare that with the HCN-5000 NEO one size down, whose CAT No.40 spindle gives 60 Nm (44 ft-lb) continuous and 15 kW (20 HP) continuous: the continuous torque here is roughly four times as high. This is the first model in the line that can be planned around large face mills, big indexable drills and steel roughing.

Mazak's series page shows two options next to the 10,000 rpm standard spindle. The high-torque option turns at 8,000 rpm with 55 kW (73 HP) at 25% ED, 45 kW (60 HP) continuous and a maximum torque of 1,413 N·m at 10% ED. The high-speed option reaches 16,000 rpm with 37 kW (50 HP) at 40% ED, 30 kW (40 HP) continuous and 221 N·m at 40% ED. Note the duty cycles: the 1,413 N·m figure is a 10% ED value and cannot be set against the 40% ED torque of the standard spindle as if they were alike.

The magazine holds 43 tools. Tools may be Ø5 in (127 mm), or Ø10 in (254 mm) with the neighbouring pockets empty, 27 in (686 mm) long and 66 lb (30 kg). The spindle centre moves from 4 in (102 mm) to 39 in (991 mm) above the pallet. Despite the mass, 41,888 lb (19,000 kg), the axes rapid at 2,362 ipm (60 m/min), the same rate as the much lighter HCN-5000 NEO. Plan for 134 in (3,404 mm) × 267 in (6,782 mm) of floor with the MAZATROL SmoothG control and 132 in (3,353 mm) of height. The table for this model gives no pallet load or workpiece size.