OKUMA GI-20NII CNC High-Speed I.D. Internal Grinder – Year 2021

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Description

OKUMA GI-20NII CNC High-Speed I.D. Internal Grinder – Year 2021
Low Hours, Both OD & ID Capable

CAPACITIES Max. I.D. grinding diameter

(Rear Spindle) mm (in.) 400 (15.76) – wheel
diameter

O.D. grinding range
(Rear spindle) mm (in.) No O.D. grinding on
operator side

Max. O.D. Grinding diameter
(Front spindle) mm (in.) 300 (11.81) – wheel
diameter

I.D. grinding range
(Front spindle) mm (in.) 300 (3.94) – wheel diameter
Max. grinding length mm (in.) 200 (7.87)

Swing within chuck guard mm (in.) 400 (15.75)

Work Length mm (in.) Max. 200 (7.87)

Work weight x length kg x mm (lb x in.) 150 x 200 (330 x 7.87)

WORK SPINDLE Spindle nose diameter mm (in.) 100 (3.94)

Max Spindle speed 75,000 RPM – Spindle 2 – 50,000 RPM

Spindle bore mm (in.) 70 (2.76)

Spindle speed range rpm 100 ~ 750

Spindle speed changes Infinitely variable by NC program

WORKHEAD Swivel angle degree 10

CROSS-SLIDE
( X AXIS)

Travel mm (in.) -50 to 150
(-1.97 to 5.91)

Pulse handle travel per graduation
() mm 0.001, 0.01, 0.05

Pulse handle travel per revolution mm 0.1, 1, 5 Auto infeed rate mm/min
(ipm)

0.0012~6,000
(0.00005~236)

Positioning rate mm/min
(ipm) 12,000 (472)

TABLE (Z AXIS) Travel mm (in.) 500 (19.69)

Pulse handle travel per increment mm 0.001, 0.01, 0.05
Pulse handle travel per revolution mm 0.1, 1.0, 5 Auto infeed rate mm/min
(ipm)

0.0006~3,000
(0.00002~118)

Table oscillation travel mm (in.) Max. 10 (0.39) by
parameter setting

Positioning rate mm/min

(ipm) 20,000 (787)

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