MG840 | JTEKT Machinery North America

Bridge Mills and Gantry Mills

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

MG840

The MG840 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 5-face machining capabilities.

RFQ


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

FERROUS SPECS

Table Size 315" x 149.6" (8,000 mm x 3,800 mm)
X-axis Travel 315" (8,000 mm)
Y-axis Travel (spindle head) 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 Speed 6,000 RPM: 35 HP (26 kW) / 30 HP (22 kW)
Spindle Speed 5:000 RPM: 40 HP (29.8 kW) / 35 HP (26 kW)
Spindle Torque 6,000 RPM: 461 ft-lb (626.2 Nm)
Spindle Torque 5,000 RPM: 1,115 ft-lb (1,512 Nm)
Spindle Nose Gearbox (CAT50):  6,000 RPM
Spindle Nose Gearbox (CAT50):  5,000 RPM
Spindle Taper 394 ipm (10 m/min)
Rapid Feedrate (X,Y and Z) 590 ipm (15 m/min)
Tool Storage Capacity 472 ipm (12 m/min)
Rapid feedrate - X axis 32 Standard (60 Optional)
Rapid feedrate - Y axis 562" x 298" x 165" (14,275 mm x 7,560 mm x 4,200 mm)
Cutting feedrate 257,941 lb (117,000 kg)

NON-FERROUS SPECS

Table Size 315" x 149.6" (8,000 mm x 3,800 mm)
X-axis Travel 315" (8,000 mm)
Y-axis Travel (spindle head) 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 Speed 10,000 RPM: 40 HP (29.8 kW) / 35 HP (26 kW)
Spindle Speed 12,000 RPM: 40 HP (29.8 kW) / 35 HP (26 kW)
Spindle Speed 20,000 RPM: 50 HP (37 kW) / 35 HP (26 kW)
Spindle Torque 10,000 RPM: 258 ft-lb (350 Nm)
Spindle Torque 12,000 RPM: 305 ft-lb (414 Nm)
Spindle Torque 20,000 RPM: 86 ft-lb (117 Nm)
Spindle Nose Direct Drive (CAT50): 10,000 RPM
Spindle Nose Integral Motor (CAT50): 12,000 RPM
Spindle Nose Integral Motor (HSK63): 20,000 RPM
Spindle Taper 394 ipm (10 m/min)
Rapid Feedrate (X,Y and Z) 590 ipm (15 m/min)
Tool Storage Capacity 472 ipm (12 m/min)
Rapid feedrate - X axis 32 Standard (60 Optional)
Rapid feedrate - Y axis 562" x 298" x 165" (14,275 mm x 7,560 mm x 4,200 mm)
Cutting feedrate 257,941 lb (117,000 kg)

HIGH TEMP ALLOY SPECS

Table Size 315" x 149.6" (8,000 mm x 3,800 mm)
X-axis Travel 315" (8,000 mm)
Y-axis Travel (spindle head) 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 Speed 6,000 RPM: 35 HP (26 kW) / 30 HP (22 kW)
Spindle Speed 12,000 RPM: 40 HP (29.8 kW) / 35 HP (26 kW)
Spindle Torque 6,000 RPM: 388 ft-lb (526 Nm)
Spindle Torque 12,000 RPM: 305 ft-lb (414 Nm)
Spindle Nose Gearbox (CAT50):  6,000 RPM
Spindle Nose Integral Motor (CAT50): 12,000 RPM
Spindle Taper 394 ipm (10 m/min)
Rapid Feedrate (X,Y and Z) 590 ipm (15 m/min)
Tool Storage Capacity 472 ipm (12 m/min)
Rapid feedrate - X axis 32 Standard (60 Optional)
Rapid feedrate - Y axis 562" x 298" x 165" (14,275 mm x 7,560 mm x 4,200 mm)
Cutting feedrate 257,941 lb (117,000 kg)

ACCURACY

Linear Position Accuracy± 0.000984" (0.025 mm) full travel
Linear Repeatability± 0.000787" (0.020 mm)

REEQUIREMENTS

Coolant Tank Capacity132 gallon
Air Source90 psi @ 3.78 CFM
Total power RequiredAC 220V ±10% (60 kVA)
Table Size 315" x 149.6" (8,000 mm x 3,800 mm)
X-axis Travel 315" (8,000 mm)
Y-axis Travel (spindle head) 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 Speed 6,000 RPM: 35 HP (26 kW) / 30 HP (22 kW)
Spindle Speed 5:000 RPM: 40 HP (29.8 kW) / 35 HP (26 kW)
Spindle Torque 6,000 RPM: 461 ft-lb (626.2 Nm)
Spindle Torque 5,000 RPM: 1,115 ft-lb (1,512 Nm)
Spindle Nose Gearbox (CAT50):  6,000 RPM
Spindle Nose Gearbox (CAT50):  5,000 RPM
Spindle Taper 394 ipm (10 m/min)
Rapid Feedrate (X,Y and Z) 590 ipm (15 m/min)
Tool Storage Capacity 472 ipm (12 m/min)
Rapid feedrate - X axis 32 Standard (60 Optional)
Rapid feedrate - Y axis 562" x 298" x 165" (14,275 mm x 7,560 mm x 4,200 mm)
Cutting feedrate 257,941 lb (117,000 kg)
Table Size 315" x 149.6" (8,000 mm x 3,800 mm)
X-axis Travel 315" (8,000 mm)
Y-axis Travel (spindle head) 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 Speed 10,000 RPM: 40 HP (29.8 kW) / 35 HP (26 kW)
Spindle Speed 12,000 RPM: 40 HP (29.8 kW) / 35 HP (26 kW)
Spindle Speed 20,000 RPM: 50 HP (37 kW) / 35 HP (26 kW)
Spindle Torque 10,000 RPM: 258 ft-lb (350 Nm)
Spindle Torque 12,000 RPM: 305 ft-lb (414 Nm)
Spindle Torque 20,000 RPM: 86 ft-lb (117 Nm)
Spindle Nose Direct Drive (CAT50): 10,000 RPM
Spindle Nose Integral Motor (CAT50): 12,000 RPM
Spindle Nose Integral Motor (HSK63): 20,000 RPM
Spindle Taper 394 ipm (10 m/min)
Rapid Feedrate (X,Y and Z) 590 ipm (15 m/min)
Tool Storage Capacity 472 ipm (12 m/min)
Rapid feedrate - X axis 32 Standard (60 Optional)
Rapid feedrate - Y axis 562" x 298" x 165" (14,275 mm x 7,560 mm x 4,200 mm)
Cutting feedrate 257,941 lb (117,000 kg)
Table Size 315" x 149.6" (8,000 mm x 3,800 mm)
X-axis Travel 315" (8,000 mm)
Y-axis Travel (spindle head) 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 Speed 6,000 RPM: 35 HP (26 kW) / 30 HP (22 kW)
Spindle Speed 12,000 RPM: 40 HP (29.8 kW) / 35 HP (26 kW)
Spindle Torque 6,000 RPM: 388 ft-lb (526 Nm)
Spindle Torque 12,000 RPM: 305 ft-lb (414 Nm)
Spindle Nose Gearbox (CAT50):  6,000 RPM
Spindle Nose Integral Motor (CAT50): 12,000 RPM
Spindle Taper 394 ipm (10 m/min)
Rapid Feedrate (X,Y and Z) 590 ipm (15 m/min)
Tool Storage Capacity 472 ipm (12 m/min)
Rapid feedrate - X axis 32 Standard (60 Optional)
Rapid feedrate - Y axis 562" x 298" x 165" (14,275 mm x 7,560 mm x 4,200 mm)
Cutting feedrate 257,941 lb (117,000 kg)
Linear Position Accuracy± 0.000984" (0.025 mm) full travel
Linear Repeatability± 0.000787" (0.020 mm)
Coolant Tank Capacity132 gallon
Air Source90 psi @ 3.78 CFM
Total power RequiredAC 220V ±10% (60 kVA)

Specifications are subject to change without notice.

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

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