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 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 315" x 149.6" (8,000 mm x 3,800 mm)
X-Axis Travel 315" (8,000 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)
Table dimension (Y direction) 6,000 RPM: 461 ft-lb (626.2 Nm)
Table dimension (Y direction) 5,000 RPM: 1,115 ft-lb (1,512 Nm)
Spindle Speed Gearbox (CAT50):  6,000 RPM
Spindle Speed Gearbox (CAT50):  5,000 RPM
Spindle motor power 394 ipm (10 m/min)
Spindle speed 590 ipm (15 m/min)
Spindle taper 472 ipm (12 m/min)
Rapid feedrate - X axis 32 Standard (60 Optional)
Standard Floor Space 562" x 298" x 165" (14,275 mm x 7,560 mm x 4,200 mm)
Standard Net Weight 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 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)
Table dimension (Y direction) 10,000 RPM: 258 ft-lb (350 Nm)
Table dimension (Y direction) 12,000 RPM: 305 ft-lb (414 Nm)
Table dimension (Y direction) 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
Spindle motor power 394 ipm (10 m/min)
Spindle speed 590 ipm (15 m/min)
Spindle taper 472 ipm (12 m/min)
Rapid feedrate - X axis 32 Standard (60 Optional)
Standard Floor Space 562" x 298" x 165" (14,275 mm x 7,560 mm x 4,200 mm)
Standard Net Weight 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 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)
Table dimension (Y direction) 6,000 RPM: 388 ft-lb (526 Nm)
Table dimension (Y direction) 12,000 RPM: 305 ft-lb (414 Nm)
Spindle Speed Gearbox (CAT50):  6,000 RPM
Spindle Speed Integral Motor (CAT50): 12,000 RPM
Spindle motor power 394 ipm (10 m/min)
Spindle speed 590 ipm (15 m/min)
Spindle taper 472 ipm (12 m/min)
Rapid feedrate - X axis 32 Standard (60 Optional)
Standard Floor Space 562" x 298" x 165" (14,275 mm x 7,560 mm x 4,200 mm)
Standard Net Weight 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 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)
Table dimension (Y direction) 6,000 RPM: 461 ft-lb (626.2 Nm)
Table dimension (Y direction) 5,000 RPM: 1,115 ft-lb (1,512 Nm)
Spindle Speed Gearbox (CAT50):  6,000 RPM
Spindle Speed Gearbox (CAT50):  5,000 RPM
Spindle motor power 394 ipm (10 m/min)
Spindle speed 590 ipm (15 m/min)
Spindle taper 472 ipm (12 m/min)
Rapid feedrate - X axis 32 Standard (60 Optional)
Standard Floor Space 562" x 298" x 165" (14,275 mm x 7,560 mm x 4,200 mm)
Standard Net Weight 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 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)
Table dimension (Y direction) 10,000 RPM: 258 ft-lb (350 Nm)
Table dimension (Y direction) 12,000 RPM: 305 ft-lb (414 Nm)
Table dimension (Y direction) 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
Spindle motor power 394 ipm (10 m/min)
Spindle speed 590 ipm (15 m/min)
Spindle taper 472 ipm (12 m/min)
Rapid feedrate - X axis 32 Standard (60 Optional)
Standard Floor Space 562" x 298" x 165" (14,275 mm x 7,560 mm x 4,200 mm)
Standard Net Weight 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 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)
Table dimension (Y direction) 6,000 RPM: 388 ft-lb (526 Nm)
Table dimension (Y direction) 12,000 RPM: 305 ft-lb (414 Nm)
Spindle Speed Gearbox (CAT50):  6,000 RPM
Spindle Speed Integral Motor (CAT50): 12,000 RPM
Spindle motor power 394 ipm (10 m/min)
Spindle speed 590 ipm (15 m/min)
Spindle taper 472 ipm (12 m/min)
Rapid feedrate - X axis 32 Standard (60 Optional)
Standard Floor Space 562" x 298" x 165" (14,275 mm x 7,560 mm x 4,200 mm)
Standard Net Weight 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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