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  • CNC Machine
  • Nakamura
  • WT-250 II
  • Lathe - CNC
  • 2010
  • B Axis:
  • C Axis:
  • Y Axis:
  • Number of Axis: Yes
  • Dual Spindles:
  • Live Tooling:
Nakamura WT-250 II Lathe - CNC 2010
Click here for photo gallery.

Specifications

■ Capacity
Max. turning diameter 250mm
Standard turning diameter 100mm
Distance between centers max.885mm / min.265mm
Max. turning length 555mm
Bar capacity L/R L : 65mm R : 51mm,65mm(op.)
Chuck size 215mm（8”）/165mm（6”）
■ Axis travel
Slide travel (X1 / X2) 195mm / 195mm
Slide travel (Z1 / Z2) 600 / 600mm
Slide travel (Y1) ± 41mm *Upper turret
Slide travel (B2-axis) 620mm
Rapid feed X1 / X2 16m/min
Rapid feed Z1 / Z2 30 m/min
Rapid feed B2 axis 30m/min
Rapid feed Y1 6m/min
■ Left and Right spindles
L : 65mm R : 51mm R : 65mm (op.)
Spindle speed 4500min-1 5000min-1 4500min-1
Spindle speed range Stepless Stepless Stepless
Spindle nose A2-6 A2-5 A2-6
Hole through spindle 80mm 63mm 120mm
I.D. of front bearing 110mm 90mm 160mm
Hole through draw tube 66mm 52mm 103mm
■ C-axis
Least input increment 0.001°
Least command increment 0.001°
Rapid index speed 600min-1
Cutting feed rate 1 ～ 4800°/min
C-axis clamp Disk clamp
C-axis engagement time 1.5sec.
■ Upper/Lower turret
Type of turret Dodecagonal drum turret
Number of Tool stations 24
Number of Indexing positions 24
Tool size (square shank) □ 25mm
Tool size (round shank) φ 32mm
■ Driven tools
L65mm / R51mm R65mm
Rotary system Individual rotation
Spindle speed 6000min-1 3600min-1 *1
Spindle range Stepless
Number of driven-tool stations 12 × 2
Collet size AR25
Holder type and tool size Straight holder φ1mm - φ16mm
Cross holder φ1mm - φ16mm
■ Drive motor power and torque
L-spindle 18.5/15kW （131/106N・m）
26/22kW (op.) （184/156N・m）
15/11kW (Wide range) (op.)（ 225/165N・m）
R-spindle 11/7.5kW （78/53N・m）
15/11kW (op.) （106/78N・m）
18.5/15kW (op.) （120/98N・m）
Driven-tool spindles 5.5/3.7kW （24/16N・m）
■ General
Machine height 2225mm
Floor space 4059mm × 2314mm
Floor space 4838mm × 2518mm *2
Machine weight 8700kg
■ Power source
Power supply 71.9kVA *3
Air supply 150 - 200NL/min, 0.5 - 0.7MPa

Notes

(1) machine can go NOW. Others would have to wait for the Murata
replacements
New in 2010 (* Did not start production until April 2012)
Fanuc 31i-A Cnc controls
Approx. hours on each: 6704 power on, 3137 run time
(2) machines are live tool capable and (2) are not
They do not use the live tooling and have no live.
Standard turret tooling on each will go.
All machines have upper/lower turrets and sub-spindle
Doing wheel hubs
8" main chuck and 8" sub.
Specifications:
Max. Turning Dia 9.84"
Max. Turning Length 21.85"
Spindle Bore 2.5"
Upper & Lower Turret 12 Position
C-Axis .001 Degree
Spindle Speed 4500 Main & Sub.
Horsepower 25HP
Weight 22,000 Lbs

Fanuc 31iT CNC Control
8" Main Hydraulic Chuck and Sub.
Upper & Lower Turrets
Live tooling in Both Turrets
Air Blow (fixed type)
Barfeed Interface
NT Navigator
NT Nurse System II
Rigid Tapping
C-Axis on Left Spindle
Chip Conveyor
All Available Tooling and Manuals
Installed 9/2010
Main spindle: 25 HP, 2 1/2" bar, 4500 rpm, full C axis
Opposing spindle: 25 HP, 2 1/2" bar capacity, 5000 rpm, full C axis
Upper and lower 12 station turrets, all live tool capable
Parts catcher/conveyor
Bar feed interface
Robot interface
Turbo chip conveyor
Auto door
Trip alarm light
Fanuc 31iT controls

Hours: Machine #1: Power ON=6656 hrs and 3136 RUN hrs

Hours: Machine #2: Power ON 6903 hrs. and 3512 RUN hrs.

Specifications subject to buyer's confirmation.