Toyoda | LB421

Bridge, Gantry & Boring Mill

Power and endurance for heavy jobs demanding accuracy and high productivity

LB421

The LB421 is a double column, fixed rail bridge machine designed for heavy cutting applications. It features a robust geared-head spindle, a hydraulic counterbalance system on the headstock, and a Meehanite cast iron base. These features allow the machine to excel in the heaviest of cuts.


The LB421YM model has extended Y-axis travel with five-face machining capabilities to allow for the machining of complex workpieces. This machine features automatic tool changes in the vertical and horizontal orientations and offers automatic clamping of the headstock. Headstock options include 30 degree, 90 degree, extension, and manual universal.

Toyoda Advantage ROI Justification MACHINE SELECTOR

FERROUS SPECS

Table Size 157.4" x 78.7" (4,000 mm x 2,000 mm)
X-Axis Travel 159.8" (4,060 mm)
Y-Axis Travel 84.6" (2,150 mm)
Y-axis Travel for -YM Configuration 110.2" (2,800 mm)
Z-Axis Travel 31.5" (800 mm)
Optional Z-axis Travel 39.4" (1,000 mm), 47.2" (1,200 mm), 55.1" (1,400 mm)
Distance from Spindle Nose to Table Top 7.9" to 39.4" (200 mm to 1,000 mm)
Distance Between Columns 90.5" (2,300 mm)
Maximum Table Load 33,000 lb (15,000 kg)
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 (30 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) 708 ipm (18 m/min)
Rapid Feedrate (Y axis) 787 ipm (20 m/min)
Rapid Feedrate (Z axis) 590 ipm (15 m/min)
Maximum Cutting Feedrate 394 ipm (10 m/min)
Tool Storage Capacity 32 Standard  (60, 90, 120 Optional)
Standard Floor Space 417" x 209" x 171" (10,590 mm x 5,300 mm x 4,350 mm)
Standard Net Weight 78,100 lb (35,500 kg)

NON-FERROUS SPECS

Table Size 157.4" x 78.7" (4,000 mm x 2,000 mm)
X-Axis Travel 159.8" (4,060 mm)
Y-Axis Travel 84.6" (2,150 mm)
Y-axis Travel for -YM Configuration 110.2" (2,800 mm)
Z-Axis Travel 31.5" (800 mm)
Optional Z-axis Travel 39.4" (1,000 mm), 47.2" (1,200 mm), 55.1" (1,400 mm)
Distance from Spindle Nose to Table Top 7.9" to 39.4" (200 mm to 1,000 mm)
Distance Between Columns 90.5" (2,300 mm)
Maximum Table Load 33,000 lb (15,000 kg)
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) 708 ipm (18 m/min)
Rapid Feedrate (Y axis) 787 ipm (20 m/min)
Rapid Feedrate (Z axis) 590 ipm (15 m/min)
Maximum Cutting Feedrate 394 ipm (10 m/min)
Tool Storage Capacity 32 Standard  (60, 90, 120 Optional)
Standard Floor Space 417" x 209" x 171" (10,590 mm x 5,300 mm x 4,350 mm)
Standard Net Weight 78,100 lb (35,500 kg)

HIGH TEMP ALLOY SPECS

Table Size 157.4" x 78.7" (4,000 mm x 2,000 mm)
X-Axis Travel 159.8" (4,060 mm)
Y-Axis Travel 84.6" (2,150 mm)
Y-axis Travel for -YM Configuration 110.2" (2,800 mm)
Z-Axis Travel 31.5" (800 mm)
Optional Z-axis Travel 39.4" (1,000 mm), 47.2" (1,200 mm), 55.1" (1,400 mm)
Distance from Spindle Nose to Table Top 7.9" to 39.4" (200 mm to 1,000 mm)
Distance Between Columns 90.5" (2,300 mm)
Maximum Table Load 33,000 lb (15,000 kg)
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) 708 ipm (18 m/min)
Rapid Feedrate (Y axis) 787 ipm (20 m/min)
Rapid Feedrate (Z axis) 590 ipm (15 m/min)
Maximum Cutting Feedrate 394 ipm (10 m/min)
Tool Storage Capacity 32 Standard  (60, 90, 120 Optional)
Standard Floor Space 417" x 209" x 171" (10,590 mm x 5,300 mm x 4,350 mm)
Standard Net Weight 417" x 209" x 171" (10,590 mm x 5,300 mm x 4,350 mm)

ACCURACY

Linear Position Accuracy± 0.0006" (0.015 mm) full travel
Linear Repeatability ± 0.0001" (0.003 mm)

REEQUIREMENTS

Coolant Tank Capacity132 gallon
Air Source90 psi @ 3.78 CFM
Total power RequiredAC 220V ±10% (60 kVA)
Table Size 157.4" x 78.7" (4,000 mm x 2,000 mm)
X-Axis Travel 159.8" (4,060 mm)
Y-Axis Travel 84.6" (2,150 mm)
Y-axis Travel for -YM Configuration 110.2" (2,800 mm)
Z-Axis Travel 31.5" (800 mm)
Optional Z-axis Travel 39.4" (1,000 mm), 47.2" (1,200 mm), 55.1" (1,400 mm)
Distance from Spindle Nose to Table Top 7.9" to 39.4" (200 mm to 1,000 mm)
Distance Between Columns 90.5" (2,300 mm)
Maximum Table Load 33,000 lb (15,000 kg)
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 (30 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) 708 ipm (18 m/min)
Rapid Feedrate (Y axis) 787 ipm (20 m/min)
Rapid Feedrate (Z axis) 590 ipm (15 m/min)
Maximum Cutting Feedrate 394 ipm (10 m/min)
Tool Storage Capacity 32 Standard  (60, 90, 120 Optional)
Standard Floor Space 417" x 209" x 171" (10,590 mm x 5,300 mm x 4,350 mm)
Standard Net Weight 78,100 lb (35,500 kg)
Table Size 157.4" x 78.7" (4,000 mm x 2,000 mm)
X-Axis Travel 159.8" (4,060 mm)
Y-Axis Travel 84.6" (2,150 mm)
Y-axis Travel for -YM Configuration 110.2" (2,800 mm)
Z-Axis Travel 31.5" (800 mm)
Optional Z-axis Travel 39.4" (1,000 mm), 47.2" (1,200 mm), 55.1" (1,400 mm)
Distance from Spindle Nose to Table Top 7.9" to 39.4" (200 mm to 1,000 mm)
Distance Between Columns 90.5" (2,300 mm)
Maximum Table Load 33,000 lb (15,000 kg)
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) 708 ipm (18 m/min)
Rapid Feedrate (Y axis) 787 ipm (20 m/min)
Rapid Feedrate (Z axis) 590 ipm (15 m/min)
Maximum Cutting Feedrate 394 ipm (10 m/min)
Tool Storage Capacity 32 Standard  (60, 90, 120 Optional)
Standard Floor Space 417" x 209" x 171" (10,590 mm x 5,300 mm x 4,350 mm)
Standard Net Weight 78,100 lb (35,500 kg)
Table Size 157.4" x 78.7" (4,000 mm x 2,000 mm)
X-Axis Travel 159.8" (4,060 mm)
Y-Axis Travel 84.6" (2,150 mm)
Y-axis Travel for -YM Configuration 110.2" (2,800 mm)
Z-Axis Travel 31.5" (800 mm)
Optional Z-axis Travel 39.4" (1,000 mm), 47.2" (1,200 mm), 55.1" (1,400 mm)
Distance from Spindle Nose to Table Top 7.9" to 39.4" (200 mm to 1,000 mm)
Distance Between Columns 90.5" (2,300 mm)
Maximum Table Load 33,000 lb (15,000 kg)
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) 708 ipm (18 m/min)
Rapid Feedrate (Y axis) 787 ipm (20 m/min)
Rapid Feedrate (Z axis) 590 ipm (15 m/min)
Maximum Cutting Feedrate 394 ipm (10 m/min)
Tool Storage Capacity 32 Standard  (60, 90, 120 Optional)
Standard Floor Space 417" x 209" x 171" (10,590 mm x 5,300 mm x 4,350 mm)
Standard Net Weight 417" x 209" x 171" (10,590 mm x 5,300 mm x 4,350 mm)
Linear Position Accuracy± 0.0006" (0.015 mm) full travel
Linear Repeatability ± 0.0001" (0.003 mm)
Coolant Tank Capacity132 gallon
Air Source90 psi @ 3.78 CFM
Total power RequiredAC 220V ±10% (60 kVA)

Specifications subject to change without notice.

Full Line of Bridge, Gantry & Boring Mill

STEALTH VB Series

Job Shop FANUC Oi Double Column Bridge Mill
X-Axis: 79.5" (2,020mm) to 118.8" (3,020mm)
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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STEALTH VB Series

Stealth VB215
(X): 2m (Y): 1.5m (Z): 0.8m

Stealth VB315
(X): 3m (Y): 1.5m (Z): 0.8m

Stealth VB320
(X): 3m (Y): 2m (Z): 0.8m

Stealth VB420
(X): 4m (Y): 2m (Z): 0.8m

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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RB Series

RB212
(X): 2m (Y): 1.2m (Z): 0.8m

RB312
(X): 3m (Y): 1.2m (Z): 0.8m

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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SB Series

SB216
(X): 2m (Y): 1.6m - 2.3m (Z): 0.8m

SB316
(X): 3m (Y): 1.6m - 2.3m (Z): 0.8m

SB416
(X): 4m (Y): 1.6m - 2.3m (Z): 0.8m

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

LB321
(X): 3m (Y): 2.1m - 2.8m (Z): 0.8m

LB421
(X): 4m (Y): 2.1m - 2.8m (Z): 0.8m

LB521
(X): 5m (Y): 2.1m - 2.8m (Z): 0.8m

LB325
(X): 3m (Y): 2.5m - 3.2m (Z): 0.8m

LB425
(X): 4m (Y): 2.5m - 3.2m (Z): 0.8m

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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LB Series (cont.)

LB525
(X): 5m (Y): 2.5m - 3.2m (Z): 0.8m

LB625
(X): 6m (Y): 2.5m - 3.2m (Z): 0.8m

LB433
(X): 4m (Y): 3.3m - 4m (Z): 0.8m

LB533
(X): 5m (Y): 3.5m - 4m (Z): 08m

LB633
(X): 6m (Y): 3m - 4m (Z): 0.8m

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

MG530
(X): 5m (Y): 3m (Z): 1m

MG630
(X): 6m (Y): 3m (Z): 1m

MG830
(X): 8m (Y): 3m (Z): 1m

MG1030
(X): 10m (Y): 3m (Z): 1m

MG640
(X): 6m (Y): 4m (Z): 1m

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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MG Series (cont.)

MG840
(X): 8m (Y): 4m (Z): 1m

MG1040
(X): 10m (Y): 4m (Z): 1m

MG650
(X): 6m (Y): 5m (Z): 1m

MG850
(X): 8m (Y): 5m (Z): 1m

MG1050
(X): 10m (Y): 5m (Z): 1m

Boring Mills

FANUC 31i Ø5" Bar Boring Mills
X-Axis: 78.7" (2,000mm) to 118.1" (3,000mm)
Y-Axis: 70.9" (1,800mm) to 82.6" (2,100mm)
Z-Axis: 51.2" (1,300mm) to 59.1" (1,500mm)
W-Axis: 19.7" (500mm) to 27.5" (700mm)
Up to 26,455 lb Weight Capacity

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Boring Mills

HB1416
(X): 2m (Y): 1.8m (Z): 1.3m

HB1620
118" (X) x 82.6" (Y) x 59.1" (Z)