Ecoca EL-4615

With 1,430 mm (56.3 in) between centers, the Ecoca EL-4615 is the long version of Ecoca's flat bed CNC lathe. The headstock end is unchanged from the EL-4610: a 460 mm (18.1 in) swing over the bed, a 225 mm (8.9 in) center height, a D1-6 spindle nose and a 9 kW (12.1 hp) spindle motor. The extra bed adds weight, and the EL-4615 comes to 2,470 kg (5,445 lb).

Length changes what the machine is asked to do. A shaft approaching a metre and a half is a slender workpiece on a 460 mm (18.1 in) swing lathe, and it will deflect under the tool unless it is supported. The standard accessories include a tailstock center, and the flat bed gives room along the ways for work supports, but Ecoca's page lists no steady rest or follow rest. Ask what is available if long, thin parts are the reason for buying the longer bed.

Swing over the cross slide is 258 mm (10.2 in), and that figure, not the swing over the bed, limits the diameter of any shaft that has to pass over the carriage. For long work it is the number to check first.

The spindle runs through 275~2,000 rpm as standard, and a 415~3,000 rpm range is listed as an option. Ecoca's description of the series applies in full: a one piece cast base for maximum stiffness and vibration damping, AC servo motors with precision ball screws on both axes, and a separate coolant tank with a removable chip tank so the operator can clean out coolant and chips. Ecoca says the machine is suitable for big and long work pieces, and this is the model in the pair that the phrase fits best.