OKUMA LB 300 M CNC turning center

OKUMA LB 300 M CNC turning center was built in 2006 in Japan by OKUMA Corporation. The machine, designed for even the most demanding production challenges, is an excellent choice for both unit and series production. Its extensive machining capabilities enable a wide range of complex operations, such as turning or threading, to be realised with the highest accuracy and repeatability.

The workspace of the OKUMA LB 300 M machine has been fully maximised in relation to its compact dimensions in order to ensure complete freedom of operation. It features, among others, an inclined bed, a reliable spindle and a 12-position turret. The spindle, driven by a high-powered motor, reaches a maximum speed of 4500 rpm and moves in two X,Z axes with feeds of 260 mm and 520 mm respectively. All cutting tools are stored in a 12-position turret, which offers fast and reliable operation. Precise positioning and support of the workpiece during machining is in turn ensured by the tailstock.

The use of an inclined bed reduces vibrations and increases the stability of the design by better distribution of the loads during machining. It also facilitates the chip removal, as the chips automatically fall directly onto the chip conveyor under the influence of gravity. All this is complemented by the state-of-the-art OKUMA OSP-P200L control system with its intuitive interface, enabling easy programming of the machining parameters. The OKUMA Space Turn LB300-M CNC lathe weighs 4300 kg.

Technical specifications of the OKUMA LB 300 M lathe

General data

• number of axes: 2 (X,Z)
• swing over bed: 530 mm
• swing over cross slide: 420 mm
• maximum turning diameter: 340 mm
• maximum turning length: 500 mm
• distance between centres: 520 mm
• feed in the X/Z axis: 260/520 mm
• feed rate in the X/Z axis: 0.001-1000 mm/rev
• rapid traverse in the X/Z axis: 20000/25000 mm/min
• C axis rotation range: 360° (increment 0.001°)
• X/Z axis drive power: 3/4 kW
• hydraulic unit pump power: 2.2 kW
• guideway lubrication pump power: 0.018 kW
• coolant pump power: 0.25 kW
• power supply: 3x 380 V; 50 Hz
• machine height: 1745 mm
• space requirement (L x W): 2200 x 1720 mm
• net weight of the OKUMA LB 300-M machine: 4300 kg

Spindle

• maximum rotational speed: 4500 rpm
• minimum rotational speed: 45 rpm
• spindle bore: 62 mm
• spindle diameter: 100 mm
• spindle taper bore: 70 mm
• drive power (20 min/continuous power): 15/11 kW
• spindle end: JIS A2-6

Turret head

• tool diameter: 40 mm
• tool shank cross-section: 25×25 mm
• rotary tool spindle speed: 45-4500 rpm
• rotary tool spindle speed adjustment: stepless

Tailstock

• tailstock spindle diameter: 90 mm
• tailstock spindle taper: MT5
• tailstock spindle travel: 120 mm

Equipment of the LB300 M metal lathe

• CNC controller: OKUMA OSP-P200L
• 12-position turret head type V12
• C axis
• tailstock
• chip conveyor
• workspace illumination
• lamp indicating machine status
• technical documentation