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Powerful 2-saddle lathe for large workpieces
Easier to use, more compact
  • Higher productivity with powerful cutting
    A 2-saddle lathe that can machine large workpieces with max turning diameter of ø900 mm and max workpiece weight of 11,000 kg (Optional). High rigidity, high power spindles (45 kW, 55 kW, 75 kW) that provide stable heavy-duty cutting with full utilization of the upper and lower turrets are available. Further dimensional stability is achieved with use of the Thermo- Friendly Concept.
    Higher productivity with powerful cutting
    ø375 B15 Spindle
  • Wide range of spec variations to handle all types of workpiece
    The lineup offers 4 types of spindle bore diameter and 5 different distances between centers. Handles various types of machining with specs such as a milling tool spindle, selftraveling tailstock, and long boring bar that can cut internal diameter with extension of 1,200 mm. Precision threading that minimizes chatter is also possible with the Okuma Intelligent Technology Machining Navi T-g (threading).
    Wide range of spec variations to handle all types of workpiece
    Self-traveling tailstock (Optional)

Machine Specifications

Model Unit LU7000 EX (L) LU7000 EX (M)
2SC×2000
Capacity Swing over bed Upper/Lower turret mm (in.) ø1,200 (ø47.24)*1
Swing over saddle Upper/Lower turret mm (in.) ø770 / ø780 (ø30.31 / ø30.71)
Max turning diameter Upper/Lower turret mm (in.) ø900 / ø670 (ø35.43 / ø26.38) ø900 / ø670 (ø35.43 / ø26.38) (L radial)
Max work length mm (in.) 2,000 (78.74)
Max workpiece weight
(including chuck)
Cantilever support kg (lb) B08 : 1,850 (4,070) [B12 : 4,000 (8,800), B15 : 4,000 (8,800), B22 : 11,000 (24,200)] (when L/D=1.0*2)
B08 : 1,300 (2,860) [B12 : 2,900 (6,380), B15 : 2,900 (6,380), B22 : 8,000 (17,600)] (when L/D=2.5*2)
Travels X-axis Upper/Lower turret mm (in.) 505 / 390 (19.88 / 15.35)
Z-axis Upper/Lower turret mm (in.) 2,150 / 2,150 (84.65 / 84.65)
C-axis control deg - 360° (min control angle 0.001°)
Spindle Spindle speed min-1 B08 : 10 - 1,500 [B12 : 8 - 750, B15 : 5 - 500, B22 : 5 - 350]
Speed ranges B08 : Auto 4-speed (4 gears) [B12·B15·B22 : Auto 2-speed (2 gears)]
Spindle torque
(30 min/cont)
B08 N-m (ft-lbf) 45 kW : 9,511/7,820 (6,993/5,750) [55 kW : 10,146/9,511 (7,460/6,993), 75 kW : 10,146/10,146 (7,460/7,460)]
B12 N-m (ft-lbf) 45 kW : 8,189/6,733 (6,021/4,950) [55 kW : 10,009/8,189 (7,359/6,021), 75 kW : 10,919/10,919 (8,028/8,028)]
B15 N-m (ft-lbf) 45 kW : 8,595/7,067 (6,319/5,196) [55 kW : 10,505/8,595 (7,724/6,319), 75 kW : 10,505/10,505 (7,724/7,724)]
B22 N-m (ft-lbf) 45 kW : 8,883/7,304 (6,531/5,370) [55 kW : 10,857/8,883 (7,983/6,531), 75 kW : 11,567/11,567 (8,505/8,505)]
Spindle nose type B08 : JIS A2-15 [B12 : JIS A2-20, B15 : JIS A2-20, B22 : ø725 flat]
Spindle bore dia mm (in.) B08 : ø200 (ø7.87) [B12 : ø320 (ø12.60), B15 : ø375 (ø14.76), B22 : ø560 (ø22.05)]
Spindle bearing dia mm (in.) B08 : ø280 (ø11.02) [B12 : ø440 (ø17.32), B15 : ø480 (ø18.90), B22 : ø700 (ø27.56)]
Turret Type Upper/Lower turret   V12 / V10 Multitasking radial V12 radial / V10 (L radial)
No. of tools Upper/Lower turret   12 / 10 L, M : 12 / L : 10
OD tool shank dimensions   mm (in.) 40 (1.57)
ID tool shank diameter   mm (in.) ø63 (ø2.48)
Milling Tool Speed range   min-1 - 40 - 3,500
Milling tool speed range   - Infinitely variable
Rapid traverse Rapid traverse X, Z-axis m/min (fpm) X : 20, Z : 20 (X : 6.10, Z : 6.10)
Rapid traverse C-axis min-1 - 50
Cutting feedrate X, Z-axis mm/rev 0.001 - 1,000.000
Tailstock Quill diameter mm (in.) ø180 (ø7.09)
Quill bore taper     MT No. 6 (built-in)
Quill travel   mm (in.) 350 (13.78)
Maximum tailstock thrust   kN 26
Motors Spindle motors (30 min/cont)   kW (hp) VAC 45 / 37 [VAC 55 / 45, VAC 75 / 60] (VAC 60 / 49 [VAC 73 / 60, VAC 100 / 80])
Milling tool spindle motors   kW (hp) - VAC 15 / 11 (20 / 15) (30 min/cont)
Axis drive motors X-axis kW (hp) XA : 5.2 (6.93), XB : 5.5 (7.33)
Z-axis kW (hp) ZA : 7.3 (9.73), ZB : 7.3 (9.73)
Coolant motors (50/60 Hz)   kW (hp) 0.55 (0.73) / 0.75 (1) × 2 turrets
Machine size Height   mm (in.) 3,300 (129.92)
Floor space (width × depth) (including tank)   mm (in.) 7,147 × 3,256 (281.38 × 128.19)
Machine weight   kg (lb) 35,000 (77,000)
CNC OSP-P300LA

[ ]: Optional

*1. B08 spindle specs limited to ø1,140 mm only in range of 30 mm from spindle nose.

*2. L: Workpiece length, D: Workpiece diameter