| CAPACITY |
GRU-2040 |
GRU-2060 |
| Distance between centers |
420 mm ( 16.5" ) |
620 mm ( 24.4" ) |
| Max. swing over table |
Ø 200 mm ( 7.9" ) |
| Max. load between centers |
80 kg ( 176 lb ) |
| Max. external grinding diameter |
Ø 190 mm ( 7.5" ) |
| Roundness |
0.8 μm |
| Machine positioning accuracy |
1 μm |
| WHEEL SPINDLE |
| Swivel angle |
± 30° |
| Wheel O.D. x width x I.D. |
Ø 405 x Max. 80 x Ø 127 mm ( Ø 15.9" x 3.1" x Ø 7.9" ) |
| Wheel spindle travel |
180 mm ( 7.1" ) |
| Max. travel |
180 mm ( 7.1" ) |
| Min. setting unit |
0.001 mm ( 0.00004" ) |
| Max. rapid traverse speed |
8 m/min. ( 314 IPM ) |
| Grinding feed rate |
0.0001 - 6,000 mm/min. ( 0.0001 - 236 IPM ) |
| WORK TABLE |
| Swivel angle |
-3˚ ~ +12˚ |
| Max. travel |
420 mm ( 16.53" ) |
620 mm ( 24.4" ) |
| Max. rapid traverse speed |
10 m/min. ( 394 IPM ) |
| Min. setting unit |
0.001 mm ( 0.00004" ) |
| Grinding feed rate |
0.0001 - 8,000 mm/min. ( 0.0001 - 315 IPM ) |
| WORK-PIECE SPINDLE |
| Spindle motor |
Servo Motor |
| Swivel angle |
+90˚ ~ -30˚ |
| Center taper |
20 m/min. ( 787.4 IPM ) |
| X / Y axes servo motor |
1.5 kW ( 4 HP ) |
| Z-axis servo motor |
2.3 kW ( 3.1 HP ) |
| TOOL MAGAZINE |
| Tool magazine capacity |
14 T |
| Max. tool length |
250 mm ( 9.8" ) |
| Max. tool weight |
3 Kg ( 6.6 lb ) |
| Max. tool magazine load |
25 Kg ( 55.1 lb ) |
| Max. tool dia. / adj. pocket empty |
Ø 90 / 150 mm ( 3.5" / 5.9" ) |
| ACCURACY |
| Positioning accuracy |
0.005 / 300 mm ( 0.0002" / 11.8" ) |
| Repeatability |
± 0.003 mm ( 0.0001" ) |
| GENERAL |
| Standard CNC controller |
SIEMENS 828D ( MITSUBISHI 70M-2BV Opt. ) |
| Voltage requirement |
15 kVA |
| Pneumatic pressure requirement |
6 Kg/cm2 |
| Coolant tank capacity |
150 L ( 39.6 gal ) |
| Machine weight |
2,500 Kg ( 5,510 lb ) |
| Dimensions ( L × W × H ) |
1,580 x 2,245 x 2,260 mm ( 62.2" x 88.4" x 89" ) |
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