The RB312 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
| Table Size | 118" x 43.3" (3,000 mm x 1,100 mm) |
| X-Axis Travel | 120.5" (3,060 mm) |
| Y-Axis Travel | 47.2" (1,200 mm) |
| Z-Axis Travel | 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 | 9,900 lb (4,500 kg) |
| Spindle Drive Motor (30 min. / cont.) | 6,000 RPM: 25 HP (18.5 kW) / 20 HP (15 kW) |
| Spindle Output Torque | 6,000 RPM: 388 ft-lb (526 Nm) |
| Spindle Speed | Gearbox (CAT50): 6,000 RPM |
| Rapid Feedrate (X axis) | 945 ipm (24 m/min) |
| Rapid Feedrate (Y axis) | 945 ipm (24 m/min) |
| Rapid Feedrate (Z axis) | 590 ipm (15 m/min) |
| Maximum Cutting Feedrate | 394 ipm (10 m/min) |
| Tool Storage Capacity | 32 Standard (40 Optional) |
| Standard Floor Space | 312" x 185" x 163" (7,930 mm x 4,700 mm x 4,150 mm) |
| Standard Net Weight | 48,501 lb (22,000 kg) |
| Table Size | 118" x 43.3" (3,000 mm x 1,100 mm) |
| X-Axis Travel | 120.5" (3,060 mm) |
| Y-Axis Travel | 47.2" (1,200 mm) |
| Z-Axis Travel | 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 | 9,900 lb (4,500 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 Output Torque | 10,000 RPM: 258 ft-lb (350 Nm) |
| Spindle Output Torque | 12,000 RPM: 176.2 ft-lb (239 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) | 945 ipm (24 m/min) |
| Rapid Feedrate (Y axis) | 945 ipm (24 m/min) |
| Rapid Feedrate (Z axis) | 590 ipm (15 m/min) |
| Maximum Cutting Feedrate | 394 ipm (10 m/min) |
| Tool Storage Capacity | 32 Standard (40 Optional) |
| Standard Floor Space | 312" x 185" x 163" (7,930 mm x 4,700 mm x 4,150 mm) |
| Standard Net Weight | 48,501 lb (22,000 kg) |
| Table Size | 118" x 43.3" (3,000 mm x 1,100 mm) |
| X-Axis Travel | 120.5" (3,060 mm) |
| Y-Axis Travel | 47.2" (1,200 mm) |
| Z-Axis Travel | 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 | 9,900 lb (4,500 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 Output Torque | 6,000 RPM: 388 ft-lb (526 Nm) |
| Spindle Output 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 |
| Rapid Feedrate (X axis) | 945 ipm (24 m/min) |
| Rapid Feedrate (Y axis) | 945 ipm (24 m/min) |
| Rapid Feedrate (Z axis) | 590 ipm (15 m/min) |
| Maximum Cutting Feedrate | 394 ipm (10 m/min) |
| Tool Storage Capacity | 32 Standard (40 Optional) |
| Standard Floor Space | 312" x 185" x 163" (7,930 mm x 4,700 mm x 4,150 mm) |
| Standard Net Weight | 48,501 lb (22,000 kg) |
| Linear Position Accuracy | ± 0.0006" (0.015 mm) full travel |
| Linear Repeatability | ± 0.0001" (0.003 mm) |
| 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.
Carlson Tool finds success with the FH1250SX and FA1050S horizontal machining centers, the HB1620 horizontal boring mill, and the RB312 and SB316YZM bridge mills.
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
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
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
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
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
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
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
