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GRU Series
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" )

Specifications are subject to change without notice.