DOOSAN LYNX 220A CNC turning center

DOOSAN LYNX 220A CNC turning center was built in 2010 in South Korea by Doosan Infracore. The machine is designed for machining workpieces with a maximum diameter of 510 mm. It offers high reliability, precision and repeatability of the produced parts for many years of intensive use, which makes it ideal for both unit and series production.

Machining is performed by means of a spindle driven by a high-powered motor. The spindle rotates at a maximum speed of 6000 rpm and operates in two axes, X and Z, with feed of 175 mm and 330 mm respectively. To reduce the impact of thermal expansion of the front end and improve overall precision at high speeds, the spindle is supported by a three-row angular contact ball bearing at the front and a single-row cylindrical roller bearing at the rear.

The DOOSAN LYNX 220A features a 12-position turret head with a large 210 mm diameter cam clutch and a 39 kN hydraulic clamp. The turret’s rigid design ensures stable heavy-duty machining, high surface finish, long boring bar reach and extended tool life. Turret rotation is controlled by a high-torque servo motor, while indexing takes place in both directions with a position change time of just 0.11 seconds.

Stable support of the workpiece during machining is provided by a robust tailstock with widely spaced guides. Its body is positioned by means of a traction rod cooperating with the carriage, while the movement of the rod and hydraulic clamping are performed manually.

The LYNX 220A CNC lathe is also distinguished by its robust design developed using the finite element method (FEM – Finite Element Method), which maintains high geometric accuracy, even under heavy working loads. The heavily ribbed body effectively dampens any vibrations generated during machining, which translates into a stable process and high workpiece quality. All this is complemented by an intelligent CNC controller with an intuitive interface and access to many advanced functions. The DOOSAN LYNX lathe weighs 2900 kg.

Technical specifications of the DOOSAN LYNX 220A CNC lathe

• swing over bed: 510 mm
• maximum turning diameter: 320 mm
• recommended turning diameter: 170 mm
• maximum turning length: 322 mm
• bar diameter: 45 mm
• feed in the X axis: 175 (160+15) mm
• feed in the Z axis: 330 mm
• rapid traverse in the X/Z axis: 30/36 m/min
• spindle rotational speed: 6000 rpm
• spindle bore diameter: 53 mm
• spindle bearing diameter: 90 mm
• spindle end: A2-5
• spindle drive power (30 min/continuous power): 15/11 kW
• chuck diameter: 6″
• tool diameter: 25×25 mm
• boring bar diameter: 40 mm
• tailstock quill diameter: 65 mm
• tailstock quill extension: 80 mm
• tailstock quill cone: MT4
• X,Z axis drive power: 1.8 kW
• coolant pump motor power: 0.18 kW
• rated power: 23.68 kVA
• resistance to power interruptions: 17 kA
• full load current: 62,15 A
• short-circuit withstand capability: 65 kA
• power supply: 3x 200/220 VAC; 50/60 Hz
• dimensions (L x W x H): 2325 x 1600 x 1600 mm
• weight of the DOOSAN LYNX 220 A machine: 2900 kg

Equipment of the DOOSAN metal lathe

• CNC control : DOOSAN FANUC i Series
• 12-position turret
• tailstock
• lubrication system
• cooling system
• foot switch control
• hydraulic unit
• tightly sealed workspace housing with front door lock
• workspace illumination