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Achieving maximum productivity with slender- and shaft-work applications 2-Saddle CNC Lathes SIMUL TURN LU EX series

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LU4000 EX
LU4000 EX
Huge reduction in machining time with simultaneous 4-axis machining on upper and lower turrets.
Video Brochure
Video Brochure
LU3000 EX turning center is Okuma's latest evolution of 4-axis turning in the 8- to 10-inch chuck class.
Many types of machining with the flexibility of 4 axes
Huge reduction in machining time with simultaneous 4-axis machining on upper and lower turrets
In other words, simultaneous OD/OD or ID/OD operations drastically reduce cycle times. In addition with optional turnaround stand and/or a steadyrest attached to the lower turret—the possibilities are endless.
High-efficiency machining from simultaneous 4-axis turning
High-efficiency machining from simultaneous 4-axis turning
Productivity 1.7 times more
  • Turning long shafts with a
    steadyrest—without chatter
    A steadyrest (optional) mounted on the lower turret does provide steady workpiece support. With an NC programmed upper turret and simultaneous control, long shafts will always be supported near the cutting point.
    Prevents chatter with steadyrest support
  • Reducing operator burden
    by auto part load/unload
    A shaft cradle (option) is attached to the lower turret to automate part load/unload, and reduce the workload of the operator.
    Shaft cradle reduces operator burden
Powerful machining and rapid movements mean shorter cycle times
High-performance simultaneous (heavy) turning with power to spare (Actual data)
Actual data

Note: The “actual data” referred to above represent examples, and may not be obtained due to differences in specifications, environmental conditions during measurement, tooling, cutting, and other conditions.

Achieve the best production system with our wide-ranging lineup
Complete multitasking with Y-axis functions
One chuck machining even with irregularly shaped workpieces
  • Complete multitasking with Y-axis functions One chuck machining even with irregularly shaped workpieces

  • A variety of milling operations can be accommodated with high-accuracy, wide-range Y-axis travel using a double slide system. Achieves complete multitasking with a single chucking (MY specifications).

    LU3000 EX LU4000 EX
    Y-axis-travel 120 mm (+70 to −50) 140 mm (+70 to −70)
    Y-axis rapid traverse 12.5 m/min 12.5 m/min
    LU3000 EX
Sub-spindle for integrated front/back
(1 machine) operations
  • Sub-spindle for integrated front/back <br>(1 machine) operations

  • With a sub-spindle, front and back machining can be done on a single machine. Since machining of both ends can be completed on one machine, workpiece storage space and post-process machines are unnecessary. (LU3000 EX only)

    LU3000 EX

Highlighted Specs

Item Unit LU3000 EX LU4000 EX
Standard chuck size in 8 10
Max turning dia ømm (øin) 410 (16.14) 480 (18.90)
Max work length mm (in) 600, 1,000
(23.62, 39.37)		 650, 1,250, 2,080, 3,080
(25.59, 49.21, 81.89, 121.26)
Spindle speed min-1 5,000 4,200
Turret U: V12, L: V8 U: V12, L: V10
Motor kW (hp) 22/15 (30 min/cont) (30/20) 22/15 (30 min/cont) (30/20)
Machine size
(W × D × H)		 mm (in) 2,950 × 2,176 × 2,080
(116.14 × 85.67 × 81.89)
3,980 × 2,478 × 2,230
(156.69 × 97.56 × 87.80)		 3,570 × 2,310 × 2,200
(140.55 × 90.94 × 86.61)
4,780 × 2,620 × 2,440
(188.19 × 103.15 × 96.06)
6,480 × 2,837 × 2,440
(255.12 × 111.69 × 96.06)
8,405 × 2,471 × 2,309
(330.91 × 97.28 × 90.91)
Spec extension M, 2M, MY, 2MY, W, MW, 2MW M, MY

M: Upper multitasking turret, 2M: Upper and lower multitasking turret, Y: Y-axis, W: Sub-spindle

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