1-Saddle CNC Lathe

4

High accuracy specifications overall assuremachining with high thermal stability

Okuma's Thermo-Friendly Concept is used on all the LB EX machines for extraordinary machining accuracy, using our unique machine design and thermal deviation compensation system. Outstanding thermal stability in long-time continuous operation, multitasking, and even Y-axis machining without troublesome compensation or warming up.

Thermo-Friendly Concept forunparalleled thermal stability

The next evolution of the slanted-box bed construction that has been highly praised as a "rugged, Okuma-like construction" in the SPACE TURN series. The primary units of headstock and turret on a box bed is optimally placed for outstanding thermal stability and high rigidity. Exhibits stable machining accuracy even in heavy cutting.

Slanted-box bed configuration withsuperior construction and rigidity

Heat sources eliminated and thermal deformation suppressed from the machine's construction

Slanted-box bed achieves outstanding thermal stability and high rigidity

Thermal deformation minimized on Z-axis

Optimized X-axis feed element

Machining dimensional change over time: ø7 µm*Actual data [LB4000 EX turning] (MY) (ambient temperature: 8C° change)

0

-10

-5

0

5

2 4 6 8 10 12 14 16 18 20 22 24

OD dimensional change Ambient temperature change

� Cycle time: 60 sec

� Cutting conditions

� Workpiece material: BsB

X-axis travel: 60 mm3 repetitions/cycle

Elapsed time (Hr)

OD

cha

nge

(øµm

)

ø7 µm

8C° changeRoomtemp

Spindle speed : 4,000 min-1

Cutting depth : 0.1 mmFeed : 0.05 mm/rev

* ø0.0003 in.

� Roundness* � Tool nose uniformity* (for better surface roughness)

� Standard spindle: 0.3 µm/at 2,000 min-1� Standard spindle�

0.4 µm/at 2,000 min-1

Standard spindle 0 mm-4.0

-2.0

0.0

2.0

4.0

（µm）�

0.50 1.00 1.50

2000 min-1 Outer perimeter

0.3 µm

0.4 µm

2,000 min-1

Material: BsB

* Actual data

1

Birth of the LB that transcends LBOkuma s LB series of NC lathes have always been pioneers,

leaving a path for others to follow behind.The LB series thus has an obligation to respond to the needs of the times, open

possibilities for the next generation, and deliver new value to customers worldwide. That means constantly developing LBs that transcend LB.

Okuma’s advanced technology in its SPACE TURN EX series continues to write new pages in world standards for machining quality, speed, power & torque,

multitasking, ease of operation, and more.

6

Spindle with a larger bearing internal diameter of ø140 mm can accommodate larger workpieces, and a turning capacity of 4 mm2 is achieved with a high-speed, wide-area full power PREX motor. Stable, high quality machining, from heavy to high speed cutting.

Bearing ID ø140 (bore ø91)

4,200 min-1

30 kW (40 hp)

700 N•m (515 ft-lbf)

Built-in PREX motor—Okuma's own powerful motor—retains full power over a wide area. There are no gears or belts that can cause vibration or bending, for stable machining without chatter.

JIS A2-6

(40/30 hp)

X: 25 m/min (984 ipm)

Z: 30 m/min (1,181 ipm)

3.7 sec (4,200 min-1)

0.2 sec/index

12 m/min (472 ipm)

Turning 4 mm2

� Spindle size

� Rapid traverse

� Spindle start/stop

� Turret rotate

� NC tailstock rapids

� Spindle speed

� Output

� Torque

Spindle/motor variations

Huge reduction in machining time with an original high power motor and faster machine movements

New PREX motor on the spindle gives turning capacity of 4 mm2

Reduced operation time achieved with higher speed machine movements

PREX motor 30/22 kW

φ91

φ140

(ø3.

58)

(ø5.

51)

Cylindrical, heavy-duty cutting

Drilling

4 mm2 (0.006 in.2)Cutting speed V: 150 m/min (492 fpm)Cutting depth t : 7 mm (0.28 in.)Feedrate f : 0.6 mm/rev (0.02 ipr)

ø59 (ø2.32) carbide throwaway drillCutting speed V: 100 m/min (328 fpm)Feedrate f : 0.2 mm/rev (0.008 ipr)

(Actual results)

ø140, 4,200 min-1

30/22 kW (30 min/cont)700 N•m (515 ft-lbf)

ø160, 3,000 min-1

37/30 kW (30 min/cont)1,178 N•m (866 ft-lbf)

Standard spindle High power specs

50

1

0.1

5

10

kW

100

500

1000

N・m

700 N•m514 N•m

239 N•m175 N•m

30 kW (30 min)22 kW (cont)

Out

put

Tor

que

Spindle speed

50 100 500 5,0004,20042 410 1,200

1,000min-1

1

0.1

10

5

kW

100

1000

N・m

Out

put

Tor

que

Spindle speed

50 100 500 1,000 2,0003,00090030 300 min-1

37 kW (30 min)

30 kW (cont)

1,178 N・m955 N・m

393 N・m318 N・m

5

Super Rigidity Speed

Previous machine

LB4000 EX

0 500 1,000 (Sec)

20.4 minutes

16.5 minutesTurning Milling

Non-cutting time

3.9 minutes (20% less)

ø14

0ø

50

6-M12, 20 deep40126

Improved productivity: 20% shorter cycle time*

* Previous machine comparison

Workpiece

8

Compact, high-power, high-torque PREX motor also used for milling spindle of the multitasking V12 radial turret. This combined with a powerful, highly rigid bolt clamp system greatly increases multitasking speed.

6,000 min-1

7.5 kW (10 hp)

58.1 N•m (42.7 ft-lbf)

JIS A2-8 10-in. chuck

12-in. chuck

12-in. chuck

15-in. chuck

JIS A2-11

0.2 sec/ index

0.4 sec (6,000 min-1)

1.5 sec

Wide working range

Max machining dia: ø480 mm (M turret: ø430 mm)

End millingChip volume 75 cm3/min (4.5 in.3/min)ø25 5-blade roughing end millCutting speed V: 35 m/min (115 fpm)Cutting depth t : 9 mm (0.35 in.)Feedrate f : 0.75 mm/rev (0.03 ipr)

Drillingø23Cutting speed V: 30 m/min (98 fpm)Feedrate f : 0.45 mm/rev (0.02 ipr)

Tapping M24 P3(Synchronized tapping)

Spindle thru hole: Bigger

Distance between centers: 770/1,520 mm

� M spindle

� Output

� Torque

� Turret rotate

� M-spindle start/stop

� M-M switch

Milling capacity 75 cm3/min

(Actual results)

Milling tool spindle

� Standard spindle

� Big-bore spindle

Greater efficiency with highest milling performance in its class and fast tool change times

Compact new PREX motor gives milling performance of 75 cm3 /min

Reduced operation time achieved with higher speed machine movements

10

5

1

0.1

10

kW N・m

50

100

58.1 N・m

33 N・m

7.5 kW (25 min)

4.3 kW (cont)

50 100 500 1,000 6,00045 1,240 4,000 min-1

Out

put

Tor

que

Spindle speed

6,000 min-1

7.5/4.3 kW (25 min/cont)58.1 N•m (43 ft-lbf)

� Standard spindle: ø91 mm (ø3.59 in.)

� Big-bore spindle: ø112 mm (ø4.41 in.)

7

10

� Large 15-inch display The display area is 2.1 times larger than previous models, increasing operation efficiency with the display of abundant machining information.

� Touch panel A tough dirt- and scratch-resistant panel is used so that data can be directly manipulated for huge improvement in work efficiency.

� USB ports Two USB ports are standard. Various peripheral devices can be connected for the intended use, such as USB memory for the transfer of large NC programs or bar recorders for production control.

Easy modelingfunction

� Collision avoidance in all settings, including manual and automatic operation, and huge reductions in setup and first part machining time. Various setting methods are provided in modeling as well,

from simple dimension input to 3-dimensional CAD data.

Programs can be created and run from a single process sheet, for easy use even without memorizing the G/M codes. Windows the operator wants to work on can be moved directly as with personal computer shortcut keys. Work operations are reduced up to 76%, greatly increasing work efficiency.

Excel files can be operated on the OSP, so that machining guidelines can be created in Excel files and referenced during setup work. Zero point, tools, and common variables can also be set and referenced from an Excel file.

Process sheet

Zero setting

Personal computer touch for ease of useMany other functions including collision prevention

and interactive operation

Easy-to-read, easy-to-use touch panel system

Collision Avoidance System for peace of mind

Advanced One-Touch IGF minimizes bothersome input

One-Touch Spreadsheet for standardization of process control and setup

Machine stoppedbefore collision

9

Easy to OperateOne CPU control for simulations, NC commands, and no machine following error

OSP-P200LThe Okuma Control for the New Era

12

Up to 10 pairs of tailstock positions can be set, enabling continuous machining of workpieces with 10 different lengths without setup. In addition, thrust can be switched between high and low without resetting the workpiece. High accuracy positioning is also possible with a high speed linear guide employing a ball screw guide.

� Tailstock thrust

� Rapid traverse

� Approach

� Retract

1~7.5 kN (Opt: 1.5~10 kN)

12 m/min (472 ipm)

10 m/min (394 ipm)

12 m/min (472 ipm)

Providing rich variation and optimum ease of use

NC tailstock that shortens setup and automates center work is standard equipment

Note: Please select a hyrdraulic quill for face driver machining applications.

Y-axis

7070

X-axis

Ys-axis

Y-axisX-axis

X・Y plane Radial Y-axismachining examples

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).

Complete multitasking with Y-axis functionsOne chuck machining even with irregularly shaped workpieces

�Travel 140 mm (+70~-70)[5.51 in. (+2.76~-2.76]

�Y-axis rapid traverse 12.5 m/min (492 ipm)

11

Extreme Versatility

13 14

Machine Specifications

Chucking Kit / Tooling KitModelSpecifications

Chuck

DriveSoft jaws, ASoft jaws, BHard jawsOD-ⅠOD-ⅡID-H40DS MT No.1-H40DS MT No.2-H40DS MT No.3-H40DS MT No.4-H40BS 10-H40BS 12-H40BS 16-H40BS 20-H40BS 25-H40BS 32-H40Axial mill/drill unitRadial mill/drill unitDummy holder

Optional Specs & Accessories

LB4000 EX

Std ChuckingKit

Solid 10 in.N-10A8SS1770

LStd Tooling

Kit

426

1

22

ChuckingE Kit

Hollow 10 in.B-210A8SS1770

5316361111222222

ＭChuckingTooling Kit

Hollow 10 in.B-210A8SS1770

531624

1

222222223

ＭＹChucking

Tooling KitHollow 10 in.

B-210A8SS1770

531624

1

222222223

�Headstock

�Chucking

�Gauges

�Tailstock

�Steadyrests

�Lubrication

�Coolant

�Air

�Cover

�Chip handling

�Dustproofing

�Automation

(Big-Bore spindle)Spindle bearing ID ø160

JIS A2-11 30~3,000 min-1 Spindle motor PREX 37/30 kW (30 min/cont)Chuck auto open/close confirmChuck high/low pressure switchWork stopper in spindleIn-process gauging systemTouch setter M (manual), A (auto)Revolving center: MT 5Tailstock taper: Built-in center MT 4

Threaded center MT 4Tailstock taper: Built-in center MT 4

Threaded center MT 5High thrust specsTailstock thrust hi/low switch specsRollers (fixed position)Auto steadyrest (self-centering)Lube monitor B-2, C-1, C-2Shower coolant A,BSpindle ID coolant A,BCoolant pump, 0.8 kWCoolant sludge controlCoolant detection; flow volume, levelMist collectorCoolant gunAir blow (blast; chuck, center, spindle ID, turret)Front door auto open/closeChip pan side rearChip conveyor side rear discharge L, HChip bucket L, HAir purge, double wiperBar feederBar pullerNC robotsNC loaders

C

NC travelDead quill MT 5

T

–

L

V12 bolt clamp

–

C

NC travelDead quill MT 5

T

–

LB4000 EXM

A2-8 42~4,200 min-1

PREX 30/22 kW (40/30 hp) (15 min/cont)NC indexing

Coolant system (water soluble)Work lamp (fluorescent)Full enclosure shielding

Jack screws, foundation washersHand tools

Door interlock (standard)Lube monitor (A-1 + oil source pressure detector)

OSP-P200LNC operation panel, 15-in. color TFT (touch panel)

Program storage; over 2 GBOperation buffer; over 2 MB

C

NC travelDead quill MT 5

T

–

MY

M-V12 radial45~6,000 min-1

PREX 7.5/4.3 kW (10/5.7 hp) (25 min/cont)

Standard Specifications & Accessories ModelSpecifications

Spindle

Sub-spindle

Milling tool

Tailstock

Standardaccessories

StandardaccessoriesCNC

Capacity

Travels

Spindle

Turret

Milling tool

Feedrates

Tailstock

Motors

Machine size

CNC

Swing over bedSwing over saddleDistance between centersMax turning diaMax work lengthX axisZ axisY axisC axisSpindle speedSpeed rangesSpindle noseSpindle bore dia / Front bearing diaTypeNo. of toolsOD tool shankID tool shank diaTurret rotationSpindle speedSpeed rangeRapid traverse (W)Tailstock rapidsRapid traverse (C)Cutting (X-Z-Y)Tapered bore typeQuill travelMain spindleMilling tool spindleAxis driveTailstock travelCoolant pumpHeightFloor spaceWeight (w/ CNC)Okuma

mm (in.)

mm (in.)

mm (in.)

mm (in.)

mm (in.)

mm (in.)

mm (in.)

mm (in.)

mm (in.)

min-1(rpm)

mm (in.)

mm (in.)

mm (in.)

sec/index

min-1(rpm)

infinitely variable

m/min (ipm)

m/min (ipm)

min-1(rpm)

mm/rev (ipr)

mm (in.)

kW (hp)

kW (hp)

kW (hp)

kW (hp)

kW (hp)

mm (in.)

mm (in.)

kg (lb)

ModelT

–

380 (14.96)

–

––

–

6,000 (13,200)

LB4000 EX(L)C × 750

770 (30.31)ø480 (ø18.90)

750 (29.53)

–

V12 NC turretL: 12

––

–

780 (30.71)

–

6,300 (13,860)

C × 1500

1,520 (59.84)

1,500 (59.06)

1,590 (62.60)

1,530 (60.24)

SD*: 0.25 (0.34)2,157 (84)

4,175 × 2,390 (164 × 94)8,200 (18,040)

ø670 (ø26.38)ø480 (ø18.90)

300 (11.81)

–

42~4,200 [30~3,000]Infinitely variable × 2 auto ranges (PREX motor coil switching)

JIS A2-8 (JIS A2-11)ø91 [ø112] / ø140 [ø160] (ø3.58 [ø4.41] / ø5.51 [ø6.30])

□25 (1)ø40 (ø1-1/2)

0.2

X: 25, Z: 30 (984, 1,181)

0.001~1,000.000 (0.00004~39.37)

30/22 (40/30) (30 min/cont) [37/30] ([50/40])

X: 3.5 / Z: 4.6 (4.73/6.21)

OSP-P200L

T

–

380 (14.96)

–

––

–

6,000 (13,200)

LB4000 EX(M)C × 750

770 (30.31)ø430 (ø16.93)

750 (29.53)

360˚ (0.001˚ increments)

M-V12 NC turretL / M: 12

45~6,0001 auto range (PREX motor coil switching)

200

780 (30.71)

7.5/4.3 (10/5.7) (25 min/cont)

6,300 (13,860)

C × 1500

1,520 (59.84)

1,500 (59.06)

1,590 (62.60)

1,530 (60.24)

SD*: 0.25 (0.34)2,157 (84)

4,175 × 2,390 (164 × 94)8,200 (18,040)

840 (33.07)

SD*: 0.25 (0.34), RD*: 0.8 (1.08)1,955 (76)

3,050 × 1,900 (120 × 75)

840 (33.07)

SD*: 0.25 (0.34), RD*: 0.8 (1.08)1,955 (76)

3,050 × 1,900 (120 × 75)

12 (472)

MT 5

2.9 (3.9)

12 (472)

MT 5

2.9 (3.9)

T

–

380 (14.96)

–

––

–

6,400 (14,080)

LB4000 EX(MY)C × 750

ø670 (ø26.38)ø480 (ø18.90)

770 (30.31)ø430 (ø16.93)

750 (29.53)300 (11.81)

140 (±70)360˚ (0.001˚ increments)

42~4,200 [30~3,000]Infinitely variable × 2 auto ranges (PREX motor coil switching)

JIS A2-8 (JIS A2-11)ø91 [ø112] / ø140 [ø160] (ø3.58 [ø4.41] / ø5.51 [ø6.30])

M-V12 NC turretL / M: 12□25 (1)

ø40 (ø1-1/4)0.2

45~6,000Infinitely variable × 1 auto ranges (PREX motor coil switching)

X: 25, Z: 30, Y: 12.5 (984, 1,181, 492)

2000.001~1,000.000 (0.00004~39.37)

780 (30.71)30/22 (40/30) (30 min/cont) [37/30] ([50/40])

7.5/4.3 (10/5.7) (25 min/cont)X: 3.5 / Z: 4.6, Ys: 3.5 (4.73/6.21, 4.73)

6,700 (14,740)OSP-P200L

C × 1500

1,520 (59.84)

1,500 (59.06)

1,590 (62.60)

1,530 (60.24)

SD: 0.25 (0.34)2,522 (99)

4,175 × 2,390 (164 × 94)8,600 (18,920)

840 (33.07)

SD: 0.25 (0.34), RD: 0.8 (1.08)2,320 (91)

3,050 × 1,900 (120 × 75)

[ ]: Big-Bore specs

12 (472)

MT 5

2.9 (3.9)

* SD: Side Discharge, RD: Rear Discharge

15

78

ø207

ø257

ø266

ø252

ø228

ø245ø234ø207

ø290

ø240

380 75 30085215190190

35

88

ø252

ø214ø238

380190 190

ø237

ø220ø270

ø420

ø248

ø21

4ø

264

ø420

27.9

380 85 30060

14070

70

ø26

240190

ø248

ø26

4

ø214

ø420

ø237

190

36.8

ø470

ø220

ø270 72

8

ø233

ø214

ø252

4.8

LB4000 EX (L)

LB4000 EX (M)LB4000 EX (L)

LB4000 EX (MY)LB4000 EX (MY)

Max turning 710

Spindlecenter

Axialmill/drill unit

OD-I

ID

OD-II

Max turning ø650

Spindle center

OD-I

OD-II

Axialmill/drill unit

Max turning ø420

Max turning ø650

ID

OD-II

OD-I

OD-I, II ID,Axial mill unit Axial mill/drill unit

Radial mill/drill unit

� Commercially available items

� Boring bar shank diameters

� DrillMT 1MT 2MT 3MT 4

Drill sleeve DS MT 1-H40DS MT 2-H40DS MT 3-H40DS MT 4-H40

� Boring bar ø40(ø1-1/2)

ID-H40 *

OD-I

� OD tool shank25 × 25(1 × 1)

OD-II

V12 turret(460 across flats)

(18.11)

Boring bar sleevesBS 8-H40BS 10-H40BS 12-H40BS 16-H40

BS 20-H40BS 25-H40BS 32-H40

* Select an ID oil-hole toolholder base (optional) for oil-hole drills and boring bars. LB400 same tooling, except for ID-H40.

ID Turning OD Turning

Tooling System

Tool Interference Drawings

ø 8ø10ø12ø16

ø20ø25ø32

ø5/16ø3/8ø1/2ø5/8

ø3/4ø1ø1-1/4

Max tur

Max turning ø420420

Max turning ø420

Max turning ø420

70

3535

ø260

ø250

ø40

60

ø530

ø245

ø650

300st240

230 35205300st

505

60

ø250

57

3 5

16.5

14.1

Max turning ø710

Max turning ø480

OD-II

Spindlecenter

OD-I

ID

20

Optional Specifications

Measuring

External Input/Output and Communication Functions

High-Speed/High-Accuracy Functions

Other Functions

Description Name Description

Additional RS-232-C channelUSB (additional) �DNC link

[1 chan, 2 chan] (Standard specs include 1 channel)2 additional ports possible�Online machining management (results, etc)Simple NC monitor (machine utilization)Host computer and FMS link per Internet(Ethernet) remote operation:Download part programs from PC, select operation

AbsoScale detection *0.1 µm controlPitch error compensation

Positioning detection by AbsoScale (X-Y-Z)0.1 µm (0.01 µin.) command incrementsCompensates for ball screw pitch error (X-Y-Z)

Short circuit breakerExternal M signals

In-process work gaugingZ-axis automatic zerooffsetC-axis zero offset

Gauging data output, file outputPost-processwork gauging

Touch setter

Y-axis gauging

By touch sensor and compensates for tool offsetAutomatically measures workpiece by touch sensor and compensates for Z-axis zero point offsetAutomatically measures workpiece by touch sensor and compensates for C-axis zero point offset

Measures workpiece outside machine, and compensatesfor tool offset based on measurement resultsQuantitative compensation method (five level, seven level)/BCD method/RS-232-CTool brought to touch setter, tool offsetcompensation (A, B specs)For machines with Y-axis specs

Spindle orientation, electric�Variable spindle speedcontrolAuto power shutoff�Warmup function (by calendar timer)�Tool retract cycleExternal programselections�

Okuma loader (OGL) interfacesThird party robot and loader interface *��

Per retract cycle per interrupt signal�A (pushbutton) 8 typesB (rotary switch) 8 stagesC1 (digital switch) BCD, 2-digitC2 (external input) BCD, 4-digit�Type B (machine)Type C (robot and loader)Type DType EIncluded in machine specs�Maker　　　Type�“Answer ignore” of auxiliary movements���

ProgrammingCircular threadingUser Task 2

Tool compensation

Common variables Thread matching (spindle orientation required)Threading slide hold

Spindle variable-speed threadingSp synchro tappingSp dead-slow cutting�Helical cutting�

Along an arcSub-programs, functional operation, logical operationInput/output variables (each 8 points)Offsets tools, corrects nose R (Standard 32 sets)Additional sets: 96 setsAdditional sets: 200 sets1000 sets (Std: 200 sets) �Possible to re-cut threads for threadedparts once removedTemporary stop during threading, excluding G34/G35Temporary stop during threading for G34/G35Adjusts spindle overdrive while threadingSpindle to Z axis (rigid tapping) Cutting at extremely slow spindle speeds Circular interpolation + helical axis interpolationDesignates X-C coordinate through X-Y coordinateStraight line command on X-C plane, circular commandFlat turning with spindle and M-axis synchronized

Interactive Programming

Integrated single-screen operationsInputting a machining shape with one stroke will allow CNC to automatically decide cutting conditions.Realistic 3D simulated test cutsSimple operations for 1st part machining jobsMachine operation direct from machining order tables

Coordinate convertProfile generateFlat turning

DNC-T3

DNC-C/Ethernet *DNC-DT

FL-net*

Cycle timereduction *

Bar feeder�Interface only�Operation timereductionSpindle rotatingchuck open/close *Spindle rotating tail-stock advance/retract

Bar feeders

One-Touch SpreadsheetReal 3-D simulation

Cycle time over check

Load monitor

Load monitor no-load detectionTool life management

Operation end buzzerChucking miss detection�Work counters� � �Hour meters� � �NC operation monitor � �NC work counter�Operation end lamp Alarm lamp �Status indicator

Prevents interference during manual operationPrevents interference during auto operationEasy modeling of shape dataExcel® files assist machining setupsReal time simulation of all machining modes(auto, MDI, manual operation)Solids, sections, transparent displaysColored tool-linked machining surface displaysMain program lists displayedVarious tool draw elementsWith cycle time calculatorWith 2D simulationActivates an alarm and stops when prescribed cycle time is exceeded

When load monitor ordered

�Included in machine specs�Count only, ( ) pcs Cycle stop, ( ) pcs Start disabled, ( ) pcs �Power ON Spindle rotation NC operating �Time totals (cutting, operation, spindle rotation,external input, etc) and 4 workpiece counters ��YellowRed Triple lamp Type C [Type A, Type B]

Collision Avoidance System(Limitations per certain components/movements may exist.)

Automation / Untended Operation

Note: * Requires technical consultation and confirmation with machine specifications

(Multitasking machine specs)

Multitaskingmachinespecs

Periodically varies the spindle speed, controls chatter when cutting large-dia thin or small-dia long workpieces

Automatic power ON and machine warm-up at preset time

M02, alarmMonitoring

CNC monitors and displays load conditions of feed axis and spindle in a graph (Machining stops when overloaded)

Totals no. of workpieces or cutting time,automatically tool changes at preset conditions

Name

Advanced One-Touch IGF L

OKUMA Corporation, OGUCHI-CHO, NIWA-GUN, AICHI 480-0193, JAPAN • PHONE (0587) 95-7825 • FAX (0587) 95-6074 The specifications, illustrations, and descriptions in this brochure vary in different markets and are subject to change without notice. Consult your local Okuma representative for specific end-user requirements. Pub No. SPACE TURN LB4000 EX-E-(2)-200 (Feb 08)

When using Okuma products, always read the safety precautionsmentioned in the instruction manual and attached to the product.

To protect your factory and equipment from fire and assure continued safe operation, observe the following fire safety precautions whenever you operate machinery. Whenever possible, avoid the use of oil-based coolants for cutting operations. Sparks caused by hot chips, tool friction, and grinding can cause fires. Always observe the following safety measures to ensure safe operation when machining flammable materials or when performing dry machining.

Before machining any material designated by law as a flammable substance, e.g., plastic, rubber, wood, acquaint yourself with the special characteristics of the material in terms of fire prevention, and observe the precautions given in (2) above to ensure safe operation. Example: When machining magnesium, there is a danger that magnesium chips and water-soluble coolants will react to produce hydrogen gas, resulting in an explosive fire if any chip should ignite.

Dry machining is a fire hazard because workpieces, tools, and chips are not cooled. To ensure safe operation, do not place any flammable objects near the machine and do not allow chips to over accumulate. In addition, be sure to check cutting tools to make sure of their service life and the condition of the tool edge, and observe the precautions regarding oil-based coolants given in (2) above.

(1) Use nonflammable cutting fluid coolant. (2) When the use of an oil-based coolant is unavoidable:

Before you begin machining, check cutting tools to make sure of their service life and the condition of the tool edge, and choose cutting conditions that will not cause a fire. Periodically clean the coolant filter to maintain sufficient coolant discharge, and frequently verify that coolant is discharging normally. Take measures to control the outbreak of fire: Place a fire extinguisher near the machine, have an operator constantly monitor operation, and install an automatic fire extinguishing system. Do not place flammable materials near the machine.Do not allow chips to over accumulate. Periodically clean the inside of the machine and the area surrounding it.Check that the machine is operating normally. Never run the machine unattended. Since an automatic fire extinguishing system and other peripherals are needed for grinding operations, please let us know as soon as possible if you plan to perform such operations.

Fire Safety Precautions

1. Oil-based coolant

2. Precautions regarding machining of potentially flammable materials

3. Dry machining

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This product is subject to the Japanese government Foreign Exchange and Foreign Trade Control Act with regard to security controlled items; whereby Okuma Corporation should be notified prior to its shipment to another country.