Superior productivity, finish and precision are claimed for the Hakusui HTL Series of CNC slant bed lathes from Japan, available in the UK from Yuasa Warwick Machinery under a new agency agreement.
Superior productivity, finish and precision are claimed for the Hakusui HTL Series of CNC slant bed lathes from Japan, available in the UK from Yuasa Warwick Machinery under a new agency agreement. The machines' performance advantage is attributed to Hakusui's development of the Ecoreg ultra particulate coolant system. This mixes air, water and coolant into a pressurised mist which is delivered by a nozzle directly to the cutter / workpiece interface.

As a result, chips are quickly removed and heat generated by the cutting process is absorbed almost instantaneously, while the evaporated coolant mix is evacuated by a built-in mist extractor.

Using Ecoreg, tool life is improved even at elevated speeds and coolant consumption is maintained at low levels, simply because not very much is needed in the first place.

The technology is standard on Hakusui's range of three slant-bed lathes.

The machines follow contemporary 2-axis CNC lathe practice, using high rigidity rolling element linear bearings fitted to a high rigidity one piece bed casting to support the X and Z axes.

A belt-driven main spindle is fitted and the turret has either 12 or 10 tool stations.

There are three machines in the range, being the HTL-60, HTL-80 and HTL-100.

They are equipped with 150, 200 and 250 mm chucks respectively for maximum turning diameters of 240 mm, 320 mm and 400 mm.

Bar capacity is 45 mm, 52 mm or 77 mm and all are equipped with tailstocks facilitating maximum turning length of 340 mm, 530 mm and 710 mm according to model.

An HTL-60L variant equipped with an automatic loading system will soon be available.

Spindle speeds are steplessly variable in the range 50 to 5,000 rev/min for the 5.5 kW HTL-60, and 35 to 3,500 rev/min for the 15 kW HTL-100.

Whereas the HTL-60 has a flat 140 mm diameter spindle nose, the two larger machines have an A2-6 and A2-8 spindle nose respectively.

Maximum traverse speed on the HTL-60 is 24 m/min in X and 30 m/min in Z while the HTL-100 offers corresponding statistics of 18 m/min and 22 m/min.

Machining feed rates on all three machines are programmable at up to 1,260 mm in both X and Z.