CNC CYLINDRICAL GRINDERS

1 2

Photos shown in this brochure may also show optional equipment.

GP-T    Plain Series / GA-T    Angle Series

Improved accuracy and productivity●Handles heavy grinding

Non-round plain bearing, diagonal rib bed ●Uses PFCII ●Faster rapid feedrates ●Shorter tailstock travel time ●Dressing during loading/unloading (machines

with loaders) ●Reduced non-cutting time with acoustic emission

sensor (optional)

Improved ease of use●Fewer key operations for workpiece and diamond

(wheel/tool) origins

Powerful, fast grinding●Grinding wheel motor power Max 15 kW

(optional) ●Wide V plain guideway structure ●Grinding wheel speed 60 m/sec (optional),

120 m/sec (optional)

GP-TPlain type

Angle typeGA-T

A compact grinderwith real power!

CNC CYLINDRICAL GRINDERS

3 4

Non-round plain bearing wheel spindle

■Heavy grinding and high-accuracy machining possible with shorter cycle time

With dynamic pressure bearing structure, retention is done with wedge-shaped oil membrane pressure produced in the internal portion of the bearing by rotating the grinding wheel spindle. Retention force with unparalleled strength of 1 ton makes powerful grinding possible. High-accuracy grinding of �0.01 µm is achieved with grinding wheel rotational accuracy. The grinding wheel spindle has no metal contact and performance can be retained semipermanently.

Okuma's precision servo and low-friction slide guideway

The below shows that reliable following is achieved without trial feed even with super slow command that moves the wheelhead 1 µm in 100 sec.

Basic technology makes powerful,high-accuracy grinding possible

Diagonal rib structure bed

*Photo is an example of bed upper surface portion

■Rigidity comparison sample(rigidity per unit weight)

1.0

1.2

3.5

7.1

No ribs

Crossed ribs

Cross ribs

Diagonal ribs

Thanks to rigid structure from a thick bed and diagonal rib placement, stable machining is possible even with raised cutting conditions, leading to increased productivity.

Stress analysis with FEM analysis

With good wheelhead follow-up accuracy and taper and R profile grinding, workpiece shape accuracy is also improved.

Support point

Wedge-shapedoil membrane

Oil pooling

Grindingwheelspindle

Bearing

62.80 162.80s100 sec

1 µm

Traversemovement

Anglegrinding wheel

X axis movementdirection

Z axis movementdirection

Use of PFC (compensation for following error during axial travel reversal)

R shape dressing Axial traverse grinding Contour grinding

Diamond

Grindingwheel Grinding

wheel

5 6

Dressing during loading/unloading of workpiece possible

Dressing during workpiece loading/unloading becomes possible with a loader and cycle time

is decreased without movement of material on the table because of X, Z wheelhead traverse.

Operability and comfort

■Fewer key operations for workpiece and diamond (wheel/tool) origins●Decrease of � 70% compared with previous

machine

■Full-enclosure shielding standard●Provides a superior environment to minimize

coolant scatter and noise.

■Tailstock with manual taper compensation●Taper changes accompanying tailstock travel

can be regulated easily.

■NC bed tooling (Optional)

●Any-position diameter gauging is possible with a tooling base for NC positioning set longitudi-nally in front of the table and a mounted sizing device. This is effective in cases when you want to use the sizer with a multistep workpiece.

MAX : 400 mm (distance between centers 350 mm)

MAX : 700 mm (distance between centers 650 mm)

Even greater ease of use

Work loading/unloading with loader

Wheelhead

Tailstock

Dressing

Table

X axis

Z axis

Powerful, fast machining

Grinding data

■Wide V plain guideway structureDuring heavy grinding, the grinding load on the wheel is fully

supported with the wide V plain guideway.

■Wheelhead motor powerFrom standard 7.5 kW up to 15 kW can be applied to match the

workpiece.

■Grinding wheel speedFrom standard 45 m/sec to 60 m/sec or 120 m/sec depending

on the desired cycle time (wheel radius ø405 mm, CBN wheel)

can be applied.

Long travel range

Wheelhead

Straightness 0.5 µm (20 µin.)

Roundness 0.19 µm (7.6 µin.) Surface roughness Ra = 0.03 µm (1.2 µin.) *Data given in catalog are all actual data

Wide

Grindingwheel

Sizingequipment

Tooling basemovement 250 (9.84 in.)

0.5 µm (20 µin.)

2 µm

200 µm

-GAP installed

Fixed cycle programs can be prepared easily by selecting fixed cycle from menu screen and setting data with an interactive format according to the guide map.

When the menu input is selected from the file edit screen,

•Grinding cycle •Dressing cycle

can be selected.

Menu selection

Select the pattern of the cycle.●Grinding cycle

• Outer and inner face/axial face plunge

• Outer and inner face/axial face multiplunge

• External face simultaneous plunge • Outer and inner face/axial face tapered multiplunge

• Outer and inner face/axial face parallel traverse

• Outer and inner face/axial face tapered traverse

• Locating ●Dressing cycle

• Outer face dressing • Left/right axial face dressing• Angular grinding wheel dressing

Data input screen that matches the selected pattern cycle is displayed. This screen displays a guide map and guide messages, and input can be done in an interactive format. When input is completed, a fixed cycle program can be created.

Pattern cycle selection

Pattern data input

(Optional)

■Pattern cycle function

1 Pattern cycle selection2 Pattern data input3

Workhead

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Automated specifications

Kit and application arrangements

Main unit specifications

■Easily applicable to loaders

Since workpiece position is fixed, application to loader is easy.

■Examples with loaders

■Wheelhead●Grinding wheel spindle motor 7.5 kW

Inverter drive system

●15 kW (optional specifications)

■Workhead MT No. 4●Dead center workhead

●Dead / live workhead (MT No. 5)

●Chucking headstock (MT No. 6)

■Tailstock MT No. 4●Travel 50 mm

●Manual taper compensation ±ø0.08 mm

●Pressure (long travel) tailstock

(MT No. 5) Travel 170 mm (Optional)

■Wheel dresser●Workhead rear attachment

●Diamond tool

Single point D-5 (Optional)

●D-6, LL type (multiple wheel type), rotary dressing (Optional)

●1M1L (1 machine / 1 loader) ●2M1L ●2M2L

Work tableTurn-over device

Work table Work tableTurn-over device

Work tableWork tableGrinder

■Swing type double-hand●Used on shaft workpieces

●Workpiece dia: ø65 mm (2.56 in.)

●Workpiece length: 200 mm (7.87 in.)

●Workpiece weight: 3 kg × 2 (6.6 lb × 2)

■Swivel-rotary type double-hand●Used on shaft Chuckpieces

●Workpiece dia: ø120 mm (4.72 in.)

●Workpiece length: 60 mm (2.36 in.)

●Workpiece weight: 3 kg × 2 (6.6 lb × 2)

■Loader grippers

Model

Kit C-kit T-kit CT-kit

C+TDead center workhead Dead / live workhead

Center work Chuck work

GP-25T / GP-26T GA-25T / GA-26T

C-kit T-kit CT-kit

C+T

Center work Chuck work

Dead center workhead Dead / live workhead

9 10

■Machine Specifications ■Optional AccessoriesCoolantrelated

Measurementrelated

Grindingwheel trueing Device related

Tailstockrelated

Drive related

Other

Coolant separatorMagnetic separator Enhanced type Magnet/paper filter combined system Cyclone (centrifugal separation)system Increased coolant specification300 L Coolant auto regulator Constant grinding lubricant flow to sizing equipment Bottom nozzle

Direct sizer w/o notch

w/ notch NC locator

Wheelhead attachment Table attachment

Diamond toolD-6LL type Rotary dressing

Tailstock stroke Long travel tailstock (w/ AbsoScale) Carbide-tipped center

Standard type MT No. 4 Long type MT No. 4 Half type MT No. 4

Umbrella type MT No. 4 Center hole lube supplier Center hole lube center

Spindle side, tailstock side Center washing Chucking headstock

Workpiece drive DogAutomatic dog Cam lock chuck

Nipper chuck

Work rest Automatic 0 type Automatic 1 type

Automatic following grinding wheeltriangular auxiliary ceiling cover Wheel auto balancer

Wheel balancing stand Balancing arbor Wheel flange Wheel jib craneAuto open/close ceiling coverWorkpiece seating confirmation Workpiece air blowerSpindle orientation Air control unit Workpiece ejector

Tailstock quill interlock type Independent hydraulic piping drive system type

Workpiece holder (stand) Fixed type V block change systemAdjustment system

Spare belt Headstock Wheelhead

Mist collector Grinding wheel spindle Grinding wheel speed

60 m/sec120 m/sec

Oil temperature regulator Distance collar

■Standard SpecificationsSpecifications

Workhead

Tailstock

Wheelhead

Coolant nozzle

Full enclosure shielding

Work lamp

Dresser

Center remover

Hand tools

Dead center workhead (Std: C type)

Dead / live workhead (Std: T type)

Tailstock Tailstock quill stroke 50 mm

Wheel spindle motor: 7.5 kW (10 hp) (inverter drive)

For 75 mm (2.95 in.) width

Manual open / close front door

Waterproof

Attached to workhead rear

Wrenches, toolbox

GP/A-25T

ø510 × ø203.2 (ø20.08 × ø8)

GP/A-25T × 35

350 (13.78)

GP : 515 (20.28) / GA : 650 (25.59)

4,800 (10,560)¡

GP/A-25T × 65

650 (25.60)

¡

GP : 815 (32.09) / GA : 950 (37.40)

5,000 (11,000)¡

¡

GP/A-26T × 35

350 (13.98)

GP : 515 (20.28) / GA : 650 (25.59)

5,000 (11,000)¡

GP/A-26T × 65

650 (25.60)

GP : 815 (32.09) / GA : 950 (37.40)

5,200 (11,440)

GP/A-26T

ø610 × ø254 (ø24.02 × ø10)

Items

Distance between centers

Swing over table

Max grinding dia

Max workpiece

weight

Wheel

Wheelhead (X-axis)

Saddle (Z-axis)

Workhead

Tailstock

Motors

Tank capacity

Weight

CNC

Center supported

Chuck supported

Wheel size

Max width

No. of speed ranges

Max grinding speed

Travel

Rapid traverse

Min command increment

Travel

Rapid traverse

Min command increment

Tapered bore

Speed

No. of speed steps

Tapered bore

Quill travel

Auto taper adjustment

Wheel spindle

Workhead

Wheelhead feed

Saddle feed

Coolant pump

Hydralic oil-lube pump

Wheel spindle lube pump

Slideway lubricant pump

Coolant tank

Hydralic oil-lube tank

Wheel spindle lube tank

Slideway lubricant pump

ø330 (ø12.99)

ø200 (ø7.87)

50 (110)

40 × 200 (88 × 7.87)

GP: 150 (5.91) GA: 125 (4.92)

Infinitely variable

2,700 (106.30)

415 (16.34)

ø30 (ø1.18)

ø0.0001 (ø0.000004)

20 (787)

0.0001 (0.000004)

MT No. 4

650

Infinitely variable

MT No. 4

50 (1.97) [80 (3.15)]

±ø0.08 (ø0.003)

7.5 (10) [11 (15), 15 (20)]

2.0 (2.7)

1.2 (1.6)

2 (2.7)

1.1 (1.5)

0.4 (0.5)

0.1 (0.13)

0.02 (0.03)

200 (757) [300 (1135.5)]

20 (75.70)

20 (75.70)

4.2 (1.1)

OSP-U20G

[ ] : Optional

Description

Unit

mm (in.)

mm (in.)

mm (in.)

kg (lb)

kg×mm (lb×in.)

mm (in.)

mm (in.)

m/min (ipm)

mm (in.)

m/min (ipm)

mm (in.)

mm (in.)

m/min (ipm)

mm (in.)

min-1

mm (in.)

mm (in.)

kW (hp)

kW (hp)

kW (hp)

kW (hp)

kW (hp)

kW (hp)

kW (hp)

kW (hp)

L (gal)

L (gal)

L (gal)

L (gal)

kg (lb)

Select for weakly magnetic alloy steel (SKD, SCM materials, etc) Select to supplement non-magnetic material such as abrasive grain Select for combined use with a magnetic separator, to discharge sludge of 11 µm Environmentally friendly without use of paper Select when machining many workpieces Select to reduce frequency of coolant refilling due to evaporation,etc, and to limit the proportion of coolant with temperature rise Select to manage coolant temperature Used to counter thermal deformation in sizing equipment Coolant is discharged at grinding point from below to prevent grinding burn on axial face when grindinglarge axial faces

This device manages measures grinding diameter during grinding and manages dimensions.Used to measure continuous surfaces Select when there are keyways and other notches in measurement location. Finger is special Compensates for variation in workpiece length position Marpos T25G Probe placed on workpiece axial face by movement according to program on X/Z axes of wheelhead Measures axial face position with gauge mounted on table for dedicated workpieces This is a tool to form the grinding wheel and perform dressing For mass production in comparison with D-5, because the grinding wheel is shaped with wedge-shaped diamond Dresser for mass production with 3 rectangular shape diamonds embedded on straight line Selected for high speed dressing. Required for CBN grinding wheels 80 mm170 mm travel. Select to use with workpieces of differentlengths without changing tailstock position Workpiece length Max difference 100 mm, can be applied to maximum of 24 types

Select when the grinding wheel interferes with the tailstock Select when there is cutting in half of center, and grinding the outside diameter near the center Select when the grinding wheel interferes with the standard center

Oil supplied automatically to the center hole. Lubrication uses coolant stock solution Center needed to use center hole oil supplier Center with hole for oil supply to inhibit heat and friction of center from friction between workpiece and center Washes off sludge attached to center exterior on spindle side and tailstock side Select when center is live (center turns) Select for regular power chucks and collet chucks However, cam lock and nipper chuck centers are dead

Workpiece is mounted by tightening bolts, and is hooked on pin in V section to rotate (manual machines only) Dog with which one touch mounting and dismounting is possible Clamping force is produced by rotation of workpiece with wedge-shaped jaws, and unclamping is donewith hydraulic piping.Clamping can be done without changing jaws even with differences in workpiece diameter of ø15 mm.Clamping is done using spring force. Device to limit warp of workpiece from grinding force Select when grinding sections with no places that use work rest Select when grinding sections with places that use work rest Maintains safe state even if grinding wheel becomes smaller with dressing, while also preventing machiningdefects from forgetting to adjust coolant nozzle. When there is an imbalance in the grinding wheel and wheel flange, sensors installed on rear part of grinding wheelspindle sense vibration and the position of weights inside the balancer is modified automatically to correct balance Required in order to use balancing arbor in adjusting static balance of grinding wheel Used when mounting on wheel flange to adjust static balance Adaptor for grinding wheel and grinding wheel spindle Used when changing grinding wheel. Weights up to 220 kg can be suspended Manual button, cycle continuous Air system To shut off water (Requires separate air controller unit)

Decided shaft workpiece is placed on V block and clamping and unclamping is done Workpiece holder with high general versatility is applied for adjustment of holder diameter inø10 mm to ø150 mm range when there are various workpiece diameters

Workpiece X-axis motor and spare continuous use belt Grinding wheel spindle motor and spare continuous use belt Mist collector for mist accumulated in machine 15 kW

High-speed specs High-speed specs using CBN grinding wheel Used in managing temperature of hydraulic unit and lubricating oil. Installation recommended in cold climates Used when combining 2 or more grinding wheels

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Main optional accessories

■Coolant separatorSludge is discharged to outside. With standard specifications there is only a magnetic separator (Ferrite magnet), but in SKD and SCM materials with weak magnetic properties combined use of a paper filter or a powerful (rare earths) magnetic separator are effective.

■Direct sizerWorkpiece OD dimensions are managed with in-process gauges during machining.

■Rotary dresserSelect for mass-production machining or when using CBN grinding wheel.

■NC locatorCompensates for variations in workpiece length reference position

■Dresser (diamond tool)Select depending on shape dressing and use, such as mass-production machining.

■Supply oil hole centerOil is supplied to reduce friction and heat in the center and workpiece center hole.

■Wheel balancing stand/balancing arborGrinding wheel, wheel flange, and balancing arbor are mounted and static balance of grinding wheel on rail is maintained.

■Pressure tailstock (long travel)When workpiece length changes, the tailstock main body position of standards tailstocks needs to be moved, but when there are several different workpiece lengths the tailstock quill position is checked and determined with an internal AbsoScale. With work-piece differences of within 100 mm the tailstock does not move and is maintained constant with support force. Travel 170 mm

Magnetic separator Combination magnetic separator, paper filter type

■Cam lock chuckThis is a chuck in which cam shaped jaws grab workpiece and clamp more strongly as the grinding load becomes larger.

■Nipper chuck (cartridge)Clamped with V block and held with spring force. Can respond flexibly to differences in workpiece diameter.

■DogWorkpiece is clamped with bolts, and hooked on pin in V section for drive. (available only with manual machines)

■Constant sizer coolant supplyWith this specification, thermal deforma-tion is minimized by constantly supplying the sizer with coolant.

D6 type LL type (multiple wheel type)

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Compact CNC in pursuit of better price-performance OSP-U20G

■ Far less trouble-shooting downtimeAs soon as an alarm is indicated, the NC has the printer (optional) print out a hard copy of the information needed to trouble-shoot the problem. You can fax the copy right to the service center and spare yourself the usual long and involved phone calls.

■ Provides “real time” results informationThe CNC compiles actual production data as it happens and outputs it to the screen. ● Operators can use the data make to improvements● Accurate up-to-date information at your fingertips ● The end-user, armed with a PC, can manage things right on

the spot in the way he or she wished.

■ Reduced setup change timeBy streamlining the file operation order, input/output of part programs takes far less time. End-users can use a conventional PC to display their own operation procedure up on the NC screen.

StandardMake your machine utilization rate soar

MacMan

Standard

Absolute position feedbackOkuma's absolute position feedback system saves your current position when power failures or inadvertent operator errors occur, making zero point recovery restarts unnecessary. That's why Okuma's OSP CNCs have been keeping customers happy for over 30 years.

Improved ease of use● Flat panel● Simplified setting of workpiece and diamond dressing tool

zero points

“Machine & Control” mechatronicsOSP was originally developed by Okuma. Okuma offers a truly integrated single source mechanical and electrical entity because Okuma totally controls the manufacture from design to inspection.

Reliable and variable software

Help function

Okuma has developed their systems with next-generation flash memory for the most reliable CNCs available. Use our NC controllers for cutting-edge functions and performance.

An assistant for key operations

When you cannot find specified G code/M code etc. in part programs, one touch on 'Help' key enables you to see the content of each code on NC display, efficiently assisting you in machining operations. When an alarm is activated, the 'Help' key will display the content of alarm on NC display, assisting the operator in troubleshooting.

Energy-saving functions● Saves energy with power-saving timer ● Display screen off, mist collector stopped, in-machine lighting off ● Wheel rotation shifts to lower speed

■OSP-U20G Standard SpecificationsAxis control

Machine axesSpindle control

Grinding wheel spindle

Position feedbackNo. of control systems Feed mechanism

Programmable units

Min inputMax input

Display/OperationsDisplay panel Data setting

Display functions

Program editProgram

Program selectWork select (index program)

Sequence no. searchSequence restartManual interrupt PLC monitor

ProgrammingProgram format Basic interpolationCoordinate system Tool function

Grinding wheel datacalculate commandFixed grinding cycles

Fixed wheel dressingcycles

mm/rev and mm/minCombination programming Chamfering, corner RArc radius programmingTaper angle programming

User task 1

Zero shiftHome position function

Program capacityProgram storage capacityOperation backup capacity

MacManMachining records totals/displayOperating results totals/displayOperating history totals/displayTrouble information totals/displayFile output of results information,trouble information

MonitoringNC grinding load monitor

Chuck barrierTailstock spindle barrier

External I/O, communication functionsRS232C Interface

High-speed / high-accuracy functionsHi-G controlDroop control

Other functionsEnergy-saving functions

Simultaneous X and Z axes: 2 axes, 2 linear axes1 axis, BL motor spindle, S 4-digit command, constant peripheral speedSpindle rotation override: 50 to 200%1 axis (Inverter control)Direct (G99) switchable 6-digit speed commandDirect (G98) switchable 6-digit peripheral speed commandOverride: 50 to 120%Max spindle speed setting (G50), max peripheral speed setting (G50)OSP full-range absolute position feedbackOne system override switch: 0 to 200%, 13 stepsRapid traverse during single block off in auto mode is 100% fixed,otherwise feedrate is 0 to 200%, 13 steps0.0001 mm (0.1 µm), 0.001 mm (1 µm), 0.01 mm, 1 mm0.001˚, 0.01˚, 1˚0.0001 mm (0.1 µm), 0.001˚Decimal 8 digits, ±9999.9999 mm

10.4 inch VGA TFT color LCD (VGA 640 x 480), flat panelZero point offset, wheel, wheel management, diamond tool,software limits, chuck/tailstock barriers etcSimple zero setting Actual position, program, block data, check data, alarms6 operation status lamps (running; S, T, M; temporary stop; programstop; limit; alarm)Screen editing with program displayed Copy, name change, delete, protect, verify Tape read, punch, date input, list displayMemory initialize/formatFrom various types of registered grinding programsSingle selection possible by registering programs needed to grindworkpiece(a) grinding cycle, (b) wheel dressing cycle(c) wheel truing cycle (optional) Program proceeds to the specified sequence number. Return to specified sequence, auto restart from returned point Manual tasks in auto mode; auto return to interrupted position. Supports maintenance work after machine shutdown Ladder display, data trace, etc

ISO/EIA auto recognition Linear interpolation, circular interpolationWorkpiece (G11 X axis, Z axis) / grinding wheel (G12 U axis, W axis)Grinding wheel data (wheel offset, wheel size) 10 setsDiamond tool data (tip coordinates) Max 9 sets

Auto calculation of wheel size and wheel data update after dressing

(a) ID (OD) plunge(b) ID (OD) & axial (taper) multi-plunge(c) Axial plunge(d) ID (OD) & axial simultaneous plunge(e) ID (OD) & axial parallel traverse ( f ) ID (OD) & axial taper traverse ID Profile grinding (a) profile grinding (b) generating & profile grinding (a) ID (OD) wheel OD(b) ID (OD) wheel left end face(c) ID (OD) wheel right end face(d) angular wheel simultaneous left end face & OD G95, G94 Use feedrate in mm/rev and mm/min: combination ofmm/rev and mm/min

Circular interpolation by commanding radius L and end point X(U), Z(W).Taper interpolation possible by designating angles from end point andstart point of X (U) and Z (W) GOTO statement, IF statement, arithmetic operationLocal variables, system variables Common variables 200 setsCalculation and travel of G code zero offsetPositioning to HP parameter set position (8 sets)

160 m160 m

Totals and displays machining status per selected main program Machine operating times (power ON, cutting, etc)Input of reasons for non-operationTime charts of machine operating statusAuto totaling of data required for troubleshooting (alarm history, etc)

Machining, operating, operating history, trouble info

Grinding load displayGrinding overload detection function (ampere display)Gap elimination function (ampere display)Set up grinding wheel off-limit area depending on chuck shapeSet up grinding wheel off-limit area depending on tailstock quill shape

RS232C interface (cable not included)

Positioning acceleration/deceleration conforming to motor’s speed/torque

When cycle start does not occur within set time, machine goes into energy-saving modeMist collector stop, screen display off

■OSP-U20G Optional Specifications

ItemKit Specifications

Interactive capacitiesI-GAPOne Touch IGF G

ProgrammingInch/metric switchableUser task 2 Sub programs Calculation function operations With I/O terminalsCommon variables 1,000 setsStandard 200 sets (no backup at 201 and after)

Program capacityTape storage capacity 320 mStandard: 160 m 640 m 1,280 m 2,560 m1 program capacity 320 mStandard: 160 m 640 m

Monitoring3-step status Type Bindicator lamp Type COperation end lamp Yellow revolving lightAlarm lamp Red revolving lightNC operation monitorWork counter 6-digit resetting 8-digit resetting or notHour meters Power ON, resettable Spindle ON, resettable or not Auto operation ON, resettable or notDisplays wheel change indicationDisplays wheel change warningContact detection with acoustic Detection of grinding wheel and workpieceemission sensor contact using AE sensor

MeasuringPost-process work Post process gauging 5-step, 7-stepgauging Post process gauging BCDLocator Wheelhead mounted Marpos T25G Table mounted Marpos UNIMAR + E3µ

External input/output communicationFD adaptor for USB memory USB memory input/output 1.44 MBDNC-A DNC-A Additional channelsDNC-T1DNC-T3

Automated functionsOriented spindle stop Proximity switchAuto power shutoff Machining completion, alarm Above + external commandWarm-upExternal workpiece Rotary switch 8 typesselection Digital switch 2-digit External command BCD 2-digit External command BCD 4-digitOkuma robot, loader I/F (built-in)Okuma robot, loader I/F (independent)Other manufacturers’ Okuma standard / B standardrobot, loader I/F Okuma standard / C standard User designationDressing during loadingCycle time reduction

Other functionsCircuit breakerSpare M code 2 sets 4 setsChuck/tailstock quill can be operated during program stopAuto grinding wheel truingVideo simulation Emergency returnPulse handle overlap

* NML: normal, ANM: animation, E: economy, D: deluxe

NML ANM I-GAP

E D E D E D

CNC CYLINDRICAL GRINDERS

GP/GA-TⅡ seriesDimensional Drawing

501,

150

530

1,68

040

1,72

0

2,9832,873

2,34

9 (9

2.48

)

3,233 (127.28)2,000 (78.74) [DBC 350]2,480 (97.64) [DBC 650] 299

2,51

8 (9

9.13

)Coolant tankOption: 300L (79.3 gal)

GP jib crane (option)

Coolant tank

Sludge box

Control cabinetCenter ofworkpiece

NC Operation panel Front door

, OGUCHI-CHO, NIWA-GUN, AICHI 480-0193, JAPAN • TEL (0587) 95-7825 • FAX (0587) 95-6074

● The sp

ecifications, illustrations, and d

escriptions in this b

rochure vary in different m

arkets and

are subject to change w

ithout notice.P

ub.N

o.GP

/GA

-T series-E-(1b

)-400 (Mar 2014)

When using O

kuma p

roducts, alw

ays read the safety p

recautionsm

entioned in the instruction m

anual and attached

to the prod

uct.

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.