JTEKT Machinery North America | MG640

Bridge Mills and Gantry Mills

Power and endurance for heavy jobs demanding accuracy and high productivity.

MG640

The MG640 is universal, moving gantry machine for ultra-heavy applications requiring tight tolerances. This machine features roller guides for speed, twin linear scales for positioning accuracy, and an ergonomic design for easy operability. The option of additional heads can give this model five-face machining capabilities.

JTEKT Advantage ROI Justification MACHINE SELECTOR
MG Series Gantry Mill
MG Series Gantry Mill
MG630 Gantry Mill Work Envelope
MG630 Gantry Mill Work Envelope 2

FERROUS SPECS

Table Size 236.2" x 149.6" (6,000 mm x 3,800 mm)
X-Axis Travel 236.2" (6,000 mm)
Y-Axis Travel 157.5" (4,000 mm)
Z-Axis Travel 39.4" (1,000 mm)
Optional Z-axis Travel 47.3" (1,200 mm), 55.2" (1,400 mm)
Maximum Table Load 1,680 lb/ft2 (2,500 kg/m2) 
Spindle Drive Motor (30 min. / cont.) 6,000 RPM: 35 HP (26 kW) / 30 HP (22 kW)
Spindle Drive Motor (30 min. / cont.) 5,000 RPM: 40 HP (29.8 kW) / 35 HP (26 kW)
Spindle Output Torque 6,000 RPM: 461 ft-lb (626.2 Nm)
Spindle Output Torque 5,000 RPM: 1,115 ft-lb (1,512 Nm)
Spindle Speed Gearbox (CAT50):  6,000 RPM
Spindle Speed Gearbox (CAT50):  5,000 RPM
Rapid Feedrate (X axis) 394 ipm (10 m/min)
Rapid Feedrate (Y axis) 590 ipm (15 m/min)
Rapid Feedrate (Z axis) 472 ipm (12 m/min)
Tool Storage Capacity 32 Standard (60 Optional)
Standard Floor Space 483" x 298" x 165" (12,275 mm x 7,560 mm x 4,200 mm)
Standard Net Weight 211,644 lb (96,000 kg)

NON-FERROUS SPECS

Table Size 236.2" x 149.6" (6,000 mm x 3,800 mm)
X-Axis Travel 236.2" (6,000 mm)
Y-Axis Travel 157.5" (4,000 mm)
Z-Axis Travel 39.4" (1,000 mm)
Optional Z-axis Travel 47.3" (1,200 mm), 55.2" (1,400 mm)
Maximum Table Load 1,680 lb/ft2 (2,500 kg/m2) 
Spindle Drive Motor (30 min. / cont.) 10,000 RPM: 40 HP (29.8 kW) / 35 HP (26 kW)
Spindle Drive Motor (30 min. / cont.) 12,000 RPM: 40 HP (29.8 kW) / 35 HP (26 kW)
Spindle Drive Motor (30 min. / cont.) 20,000 RPM: 50 HP (37 kW) / 35 HP (26 kW)
Spindle Output Torque 10,000 RPM: 258 ft-lb (350 Nm)
Spindle Output Torque 12,000 RPM: 305 ft-lb (414 Nm)
Spindle Output Torque 20,000 RPM: 86 ft-lb (117 Nm)
Spindle Speed Direct Drive (CAT50): 10,000 RPM
Spindle Speed Integral Motor (CAT50): 12,000 RPM
Spindle Speed Integral Motor (HSK63): 20,000 RPM
Rapid Feedrate (X axis) 394 ipm (10 m/min)
Rapid Feedrate (Y axis) 590 ipm (15 m/min)
Rapid Feedrate (Z axis) 472 ipm (12 m/min)
Tool Storage Capacity 32 Standard (60 Optional)
Standard Floor Space 483" x 298" x 165" (12,275 mm x 7,560 mm x 4,200 mm)
Standard Net Weight 211,644 lb (96,000 kg)

HIGH TEMP ALLOY SPECS

Table Size 236.2" x 149.6" (6,000 mm x 3,800 mm)
X-Axis Travel 236.2" (6,000 mm)
Y-Axis Travel 157.5" (4,000 mm)
Z-Axis Travel 39.4" (1,000 mm)
Optional Z-axis Travel 47.3" (1,200 mm), 55.2" (1,400 mm)
Maximum Table Load 1,680 lb/ft2 (2,500 kg/m2) 
Spindle Drive Motor (30 min. / cont.) 6,000 RPM: 35 HP (26 kW) / 30 HP (22 kW)
Spindle Drive Motor (30 min. / cont.) 12,000 RPM: 40 HP (29.8 kW) / 35 HP (26 kW)
Spindle Output Torque 6,000 RPM: 388 ft-lb (526 Nm)
Spindle Output Torque 12,000 RPM: 305 ft-lb (414 Nm)
Spindle Speed Gearbox (CAT50):  6,000 RPM
Spindle Speed Integral Motor (CAT50): 12,000 RPM
Rapid Feedrate (X axis) 394 ipm (10 m/min)
Rapid Feedrate (Y axis) 590 ipm (15 m/min)
Rapid Feedrate (Z axis) 472 ipm (12 m/min)
Tool Storage Capacity 32 Standard (60 Optional)
Standard Floor Space 483" x 298" x 165" (12,275 mm x 7,560 mm x 4,200 mm)
Standard Net Weight 211,644 lb (96,000 kg)

ACCURACY

Linear Position Accuracy (X and Y axes)± 0.001" (0.025 mm) full travel
Linear Position Accuracy (Z axis)
± 0.0006" (0.015 mm) full travel
Linear Repeatability± 0.0004" (0.010 mm)

REEQUIREMENTS

Coolant Tank Capacity132 gallon
Total power RequiredAC 220V ±10% (80 kVA)
Table Size 236.2" x 149.6" (6,000 mm x 3,800 mm)
X-Axis Travel 236.2" (6,000 mm)
Y-Axis Travel 157.5" (4,000 mm)
Z-Axis Travel 39.4" (1,000 mm)
Optional Z-axis Travel 47.3" (1,200 mm), 55.2" (1,400 mm)
Maximum Table Load 1,680 lb/ft2 (2,500 kg/m2) 
Spindle Drive Motor (30 min. / cont.) 6,000 RPM: 35 HP (26 kW) / 30 HP (22 kW)
Spindle Drive Motor (30 min. / cont.) 5,000 RPM: 40 HP (29.8 kW) / 35 HP (26 kW)
Spindle Output Torque 6,000 RPM: 461 ft-lb (626.2 Nm)
Spindle Output Torque 5,000 RPM: 1,115 ft-lb (1,512 Nm)
Spindle Speed Gearbox (CAT50):  6,000 RPM
Spindle Speed Gearbox (CAT50):  5,000 RPM
Rapid Feedrate (X axis) 394 ipm (10 m/min)
Rapid Feedrate (Y axis) 590 ipm (15 m/min)
Rapid Feedrate (Z axis) 472 ipm (12 m/min)
Tool Storage Capacity 32 Standard (60 Optional)
Standard Floor Space 483" x 298" x 165" (12,275 mm x 7,560 mm x 4,200 mm)
Standard Net Weight 211,644 lb (96,000 kg)
Table Size 236.2" x 149.6" (6,000 mm x 3,800 mm)
X-Axis Travel 236.2" (6,000 mm)
Y-Axis Travel 157.5" (4,000 mm)
Z-Axis Travel 39.4" (1,000 mm)
Optional Z-axis Travel 47.3" (1,200 mm), 55.2" (1,400 mm)
Maximum Table Load 1,680 lb/ft2 (2,500 kg/m2) 
Spindle Drive Motor (30 min. / cont.) 10,000 RPM: 40 HP (29.8 kW) / 35 HP (26 kW)
Spindle Drive Motor (30 min. / cont.) 12,000 RPM: 40 HP (29.8 kW) / 35 HP (26 kW)
Spindle Drive Motor (30 min. / cont.) 20,000 RPM: 50 HP (37 kW) / 35 HP (26 kW)
Spindle Output Torque 10,000 RPM: 258 ft-lb (350 Nm)
Spindle Output Torque 12,000 RPM: 305 ft-lb (414 Nm)
Spindle Output Torque 20,000 RPM: 86 ft-lb (117 Nm)
Spindle Speed Direct Drive (CAT50): 10,000 RPM
Spindle Speed Integral Motor (CAT50): 12,000 RPM
Spindle Speed Integral Motor (HSK63): 20,000 RPM
Rapid Feedrate (X axis) 394 ipm (10 m/min)
Rapid Feedrate (Y axis) 590 ipm (15 m/min)
Rapid Feedrate (Z axis) 472 ipm (12 m/min)
Tool Storage Capacity 32 Standard (60 Optional)
Standard Floor Space 483" x 298" x 165" (12,275 mm x 7,560 mm x 4,200 mm)
Standard Net Weight 211,644 lb (96,000 kg)
Table Size 236.2" x 149.6" (6,000 mm x 3,800 mm)
X-Axis Travel 236.2" (6,000 mm)
Y-Axis Travel 157.5" (4,000 mm)
Z-Axis Travel 39.4" (1,000 mm)
Optional Z-axis Travel 47.3" (1,200 mm), 55.2" (1,400 mm)
Maximum Table Load 1,680 lb/ft2 (2,500 kg/m2) 
Spindle Drive Motor (30 min. / cont.) 6,000 RPM: 35 HP (26 kW) / 30 HP (22 kW)
Spindle Drive Motor (30 min. / cont.) 12,000 RPM: 40 HP (29.8 kW) / 35 HP (26 kW)
Spindle Output Torque 6,000 RPM: 388 ft-lb (526 Nm)
Spindle Output Torque 12,000 RPM: 305 ft-lb (414 Nm)
Spindle Speed Gearbox (CAT50):  6,000 RPM
Spindle Speed Integral Motor (CAT50): 12,000 RPM
Rapid Feedrate (X axis) 394 ipm (10 m/min)
Rapid Feedrate (Y axis) 590 ipm (15 m/min)
Rapid Feedrate (Z axis) 472 ipm (12 m/min)
Tool Storage Capacity 32 Standard (60 Optional)
Standard Floor Space 483" x 298" x 165" (12,275 mm x 7,560 mm x 4,200 mm)
Standard Net Weight 211,644 lb (96,000 kg)
Linear Position Accuracy (X and Y axes)± 0.001" (0.025 mm) full travel
Linear Position Accuracy (Z axis)
± 0.0006" (0.015 mm) full travel
Linear Repeatability± 0.0004" (0.010 mm)
Coolant Tank Capacity132 gallon
Total power RequiredAC 220V ±10% (80 kVA)

Specifications are subject to change without notice.

CASE STUDIES

C.G. Bretting Manufacturing Increases Capability without Sacrificing Space
With the new Gantry Mills, C.G. Bretting was able to get parts out faster with a higher level of quality and accuracy.

Time Lapse Installation of the MG830 Gantry Mill at C.G. Bretting Manufacturing

MG830 Gantry Mill Time-lapse Installation at CG Bretting Manufacturing.

Full Line of Bridge Mills and Gantry Mills

VB Series

Job Shop FANUC Oi Double Column Bridge Mill
X-Axis: 79.5" (2,020mm) to 158.2" (4,020mm)
Y-Axis: 59" (1,500mm) to 78.7" (2,000mm)
Z-Axis: 31.5" (800mm)
Spindle: #50 6,000 RPM Geared Head

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RB Series

FANUC 31i Double Column Bridge Mill
X-Axis: 83.5" (2,120mm) to 120.5" (3,060mm)
Y-Axis: 47.2" (1,200mm)
Z-Axis: 31.5" (800mm)
Spindle: #50 6K Geared or Highspeed Options

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SB Series

FANUC 31i Double Column Bridge Mill
X-Axis: 83.5" (2,120mm) to 159.8" (4,060mm)
Y-Axis: 63" (1,600mm) to 90.5" (2,300mm)
Z-Axis: 31.5" (800mm) to 39.3" (1000mm)
Spindle: Geared Head or Highspeed Options
Five-Face/Right Angle Head Capable

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LB Series

FANUC 31i Double Column Bridge Mill
X-Axis: 120.5" (3,060mm) to 253.8" (10,000mm)
Y-Axis: 84.6" (2,150mm) to 157.5" (4,000mm)
Z-Axis: 31.5" (800mm) to 55.1" (1400mm)
Spindle: Geared Head or Highspeed Options
Five-Face/Right Angle Head Capable

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LB Series (cont.)

FANUC 31i Double Column Bridge Mill
X-Axis: 120.5" (3,060mm) to 253.8" (10,000mm)
Y-Axis: 84.6" (2,150mm) to 157.5" (4,000mm)
Z-Axis: 31.5" (800mm) to 55.1" (1400mm)
Spindle: Geared Head or Highspeed Options
Five-Face/Right Angle Head Capable

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MG Series Gantry Mill

MG Series

FANUC 31i Moving Gantry Mill
X-Axis: 197" (5,000mm) to 787.4" (20,000mm)
Y-Axis: 118.1" (3,000mm) to 236.2" (6,000mm)
Z-Axis: 31.5" (800mm) to 55.1" (1400mm)
Spindle: Geared Head or Highspeed Options
Five-Face/Right Angle Head Capable

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MG Series Gantry Mill

MG Series (cont.)

FANUC 31i Moving Gantry Mill
X-Axis: 197" (5,000mm) to 787.4" (20,000mm)
Y-Axis: 118.1" (3,000mm) to 236.2" (6,000mm)
Z-Axis: 31.5" (800mm) to 55.1" (1400mm)
Spindle: Geared Head or Highspeed Options
Five-Face/Right Angle Head Capable

View Models