GMT CMM - Models and Technical Data Sheet
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Model - GRANO 4-5-4 4-5-4 4-10-4 6-7-5 6-7-5 7-10-6 7-15-6 10-10-8 10-15-8 10-20-8 12-15-10 12-20-10 12-25-10 12-30-10
Machine Type Moving Bridge
Operating Mode Manual DCC Manual DCC DCC DCC DCC
Guide Method Air bearings on all axes
Measuring Range X axis mm 450 600 750 1000 1250
Measuring Range Y axis mm 500 500 1000 750 1000 1500 1000 1500 2000 1500 2000 2500 3000
Measuring Range Z axis mm * 400 550 600 800 1000
Clearance under bridge mm 560 670 800 1030 1230
Overall Dimensions  
Length - mm 1400 1900 1400 2050 2550 2250 2750 3250 2750 3250 3750 4250
Width - mm 1300 1300 1300 1520 1520 1880 1880 1880 2130 2130 2130 2130
Height - mm 2600 2600 2800 3050 3050 3550 3550 3550 3750 3750 3800 3800
Length Measuring System Reflective linear encoder
Uncertanity of Measurement as per ISO-10360-2  
MPEE - (L = Measured Length in mm) & E in µm 5+ L / 200 3+ L / 200 5+ L / 200 3+ L / 200 3+ L / 200 3.5 + L / 200 3.5+ L / 200
MPEP - Probing Error P in µm 4 3 4 3 3 3.5 3.5
Resolution of Tape Scale in µm 0.5 0.5 / 0.1 0.5 0.5 / 0.1 0.5 / 0.1 0.5 / 0.1 0.5 / 0.1
Velocity - mm/s - 350 - 350 350 300 300
Accleration - mm/s² - 700 - 700 700 600 600
Measuring Table Material Granite
Working Area (l x b) mm 1040 X 550 1500 X 550 1315 X 700 1700 X 810 2000 X 810 1500 X 1250 2000 X 1250 2500 X 1250 2000 X 1500 2500 X 1500 3000 X 1500 3500 X 1500
Threaded Stainless Steel Insert M8
Max. Permissible Work Piece Weight Kg 250 400 350 500 750 1100 1200 1600 1300 2000 2250 2500
Machine Weight Kg 750 1500 810 1500 2750 2650 3350 4050 3900 4650 7000 8000
Air supply in lpm 80. Supply pressure 6-10bar pre filtered air quality as ISO8573 Part1 class4 100. Supply pressure 6-10bar pre filtered air quality as ISO8573 Part1 class4
Power Input ( kVA ) 0.5 2 0.5 2 2
Operational Voltage 220 VAC ± 10 %, 50/60 Hz
Operating Temperature in °C 20 ± 2
Humidity 40 - 60 %
Temperature Fluctuations °C/h 1
Temperature Fluctuations °C/day 2
* Probing system clearance – 90 mm from z ram bottom face to granite base top surface.