Bridge Mills and Gantry Mills
Power and endurance for heavy jobs demanding accuracy and high productivity.
RB212
The RB212 is a heavy duty, double column, fixed rail bridge machine. This bridge features roller guides, a hydraulic counterbalance system on the headstock, and a two-speed, geared spindle.
JTEKT Advantage ROI Justification MACHINE SELECTOR
FERROUS SPECS
| Table Size | 78.7"x 43.3" (2,000 mm x 1,100 mm) |
| X-axis Travel (column) | 83.5" (2,120 mm) |
| Y-axis Travel (spindle head) | 47.2" (1,200 mm) |
| Z-axis Travel (work table) | 31.5" (800 mm) |
| Distance from Spindle Nose to Table Top | 5.9" to 37.4" (150 mm to 950 mm) |
| Distance Between Columns | 51.2" (1,300 mm) |
| Maximum Table Load | 7,700 lb (3,500 kg) |
| Spindle Drive Motor (30 min. / cont.) | 6,000 RPM: 25 HP (18.5 kW) / 20 HP (15 kW) |
| Spindle Torque | 6,000 RPM: 388 ft-lb (526 Nm) |
| Spindle Speed | Gearbox (CAT50): 6,000 RPM |
| Spindle Taper | 945 ipm (24 m/min) |
| Rapid Feedrate (X,Y and Z) | 945 ipm (24 m/min) |
| Tool Storage Capacity | 590 ipm (15 m/min) |
| Maximum Cutting Feedrate | 394 ipm (15 m/min) |
| Rapid feedrate - X axis | 32 Standard (40 Optional) |
| Rapid feedrate - Y axis | 232" x 140" x 160" (5,900 mm x 3,550 mm x 4,050 mm) |
| Cutting feedrate | 39,600 lb (18,000 kg) |
NON-FERROUS SPECS
| Table Size | 78.7"x 43.3" (2,000 mm x 1,100 mm) |
| X-axis Travel (column) | 83.5" (2,120 mm) |
| Y-axis Travel (spindle head) | 47.2" (1,200 mm) |
| Z-axis Travel (work table) | 31.5" (800 mm) |
| Distance from Spindle Nose to Table Top | 5.9" to 37.4" (150 mm to 950 mm) |
| Distance Between Columns | 51.2" (1,300 mm) |
| Maximum Table Load | 7,700 lb (3,500 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 Torque | 10,000 RPM: 258 ft-lb (350 Nm) |
| Spindle Torque | 12,000 RPM: 176.2 ft-lb (239 Nm) |
| Spindle 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 |
| Spindle Taper | 945 ipm (24 m/min) |
| Rapid Feedrate (X,Y and Z) | 945 ipm (24 m/min) |
| Tool Storage Capacity | 590 ipm (15 m/min) |
| Maximum Cutting Feedrate | 394 ipm (10 m/min) |
| Rapid feedrate - X axis | 32 Standard (40 Optional) |
| Rapid feedrate - Y axis | 232" x 140" x 160" (5,900 mm x 3,550 mm x 4,050 mm) |
| Cutting feedrate | 39,600 lb (18,000 kg) |
HIGH TEMP ALLOY SPECS
| Table Size | 78.7"x 43.3" (2,000 mm x 1,100 mm) |
| X-axis Travel (column) | 83.5" (2,120 mm) |
| Y-axis Travel (spindle head) | 47.2" (1,200 mm) |
| Z-axis Travel (work table) | 31.5" (800 mm) |
| Distance from Spindle Nose to Table Top | 5.9" to 37.4" (150 mm to 950 mm) |
| Distance Between Columns | 51.2" (1,300 mm) |
| Maximum Table Load | 7,700 lb (3,500 kg) |
| Spindle Drive Motor (30 min. / cont.) | 6,000 RPM: 25 HP (18.5 kW) / 20 HP (15 kW) |
| Spindle Drive Motor (30 min. / cont.) | 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: 176.2 ft-lb (239 Nm) |
| Spindle Speed | Gearbox (CAT50): 6,000 RPM |
| Spindle Speed | Integral Motor (CAT50): 12,000 RPM |
| Spindle Taper | 945 ipm (24 m/min) |
| Rapid Feedrate (X,Y and Z) | 945 ipm (24 m/min) |
| Tool Storage Capacity | 590 ipm (15 m/min) |
| Maximum Cutting Feedrate | 394 ipm (10 m/min) |
| Rapid feedrate - X axis | 32 Standard (40 Optional) |
| Rapid feedrate - Y axis | 232" x 140" x 160" (5,900 mm x 3,550 mm x 4,050 mm) |
| Cutting feedrate | 39,600 lb (18,000 kg) |
ACCURACY
| Linear Position Accuracy | ± 0.0006" (0.015 mm) full travel |
| Linear Repeatability | ± 0.0001" (0.003 mm) |
REEQUIREMENTS
| Coolant Tank Capacity | 132 gallon |
| Air Source | 90 psi @ 3.78 CFM |
| Total power Required | AC 220V ±10% (60 kVA) |
Specifications are subject to change without notice.
Case Study: Cascade Pattern - SB316 & RB212 Bridge Mills, and Stealth 965, 1165, & 1365 Vertical Machining Centers
Cascade Pattern doubled capacity with SB316, RB212 (Bridge Mills), Stealth 965, Stealth 1165, and Stealth AA1365 (Vertical Machining Centers).
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
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
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
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
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
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
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