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• Manufacturer:
  American Augers
• Model:
  72-1200 NG

DIMENSIONS
Length: 14' 3" (4.34 m)
Width: 8' 6" (2.59 m)
Height: 8' 3" (2.51 m)
Master Track Length: 15' (4.57 m) with 1 1/2" (38 mm) back plate
Master Track Width: 8' (2.43 m)
Centerline: 43.47" (1,104 mm)
Extension Track Length: 10' (3 m)
Extension Track Width: 8' (2.43 m)

WEIGHT
Base Unit (Split Weight): 12,000 lbs. (5,443 kg)
Power Pack (Split Weight): 14,000 lbs. (6,350 kg)
Master Pusher: 2,500 lbs. (1,134 kg)
Master Track: 7,700 lbs. (3,493 kg)
Lifting Sling: 700 lbs. (318 kg)
Total Weight: 36,900 lbs. (16,740 kg)
Extension Track: 4,900 lbs. (2,223 kg) each
Master Saddle: 400 lbs. (181 kg)

POWER TRAIN
Engine: Caterpillar C-7 ACERT Tier III Diesel
Rating: 250 HP (186 kW)
Maximum Engine Speed: 2100 RPM
Engine Torque: 625 ft-lbs. (847.4 Nm) 2100 RPM, 625 ft-lbs. (847.4 Nm) 1600 RPM
Fuel Capacity: 58 U.S. Gallons (219 L)
Hydraulic Capacity: 48 U.S. Gallons (181 L)
Battery: (2) Deka 634MF 12 V, 690 CCA

TRANSMISSION
Type: Eaton FS-6406

Transmission Ratios:
Gear Ratio
1st Gear 9.01:1
2nd Gear 5.27:1
3rd Gear 3.22:1
4th Gear 2.04:1
5th Gear 1.36:1
6th Gear 1.00:1
Reverse 8.63:1
Clutch: Dual Plate, Spring Applied with 14" (356 mm) Diameter Twin Disk/Hydraulically Assisted Clutch Actuator

GEARBOX
Ratio 35.63:1

TORQUE AND SPEED
Torque Requirements:(2100 RPM)
1st 200,641 ft.-lbs. (271,868 Nm) 7 RPM
2nd 117,356 ft.-lbs. (159,017 Nm) 11 RPM
3rd 71,705 ft.-lbs. (97,160 Nm) 18 RPM
4th 45,428 ft.-lbs. (61,554 Nm) 29 RPM
5th 30,286 ft.-lbs. (41,037 Nm) 43 RPM
6th 22,269 ft.-lbs. (30,166 Nm) 59 RPM
Reverse 192,179 ft.-lbs. (260,402 Nm) 7 RPM

Torque Requirements:(1600 RPM)
1st 200,641 ft.-lbs. (271,868 Nm) 5 RPM
2nd 117,356 ft.-lbs. (159,017 Nm) 9 RPM
3rd 71,705 ft.-lbs. (97,160 Nm) 14 RPM
4th 45,428 ft.-lbs. (61,554 Nm) 22 RPM
5th 30,286 ft.-lbs. (41,037 Nm) 33 RPM
6th 22,269 ft.-lbs. (30,166 Nm) 45 RPM
Reverse 192,179 ft.-lbs. (260,402 Nm) 5 RPM

HYDRAULIC SYSTEM
Maximum Thrust: 1,200,000 lbs. (544 Tonnes)
Hydraulic Pump: Axial Piston Pump with Load Sensor
Gear Pump: Piston Pump, 39 CIR, LH, SAE
Maximum Pump Pressure: 4,715 psi (325 bar)
Maximum Pump Output: 35 U.S. Gallons (132 L)/minute
Hydraulic Motors: (2) 60 CIR, LSHT
Hydraulic Push Bar Cylinder: (1) 2" Bore x 4" Stroke (51 mm x 102 mm)
Hydraulic Clutch Cylinder: (1) 1 1/2" Bore x 4" Stroke (38 mm x 102 mm)
Hydraulic Thrust Cylinder: (4) 9" Bore x 35" Stroke (229 mm x 889 mm)
Hydraulic Suction Strainer Filter: Suction Strainer with 100 Mesh Screen
Hydraulic Return Filter: High Pressure Return Filter to 6 Micron ABS with Replaceable Element

MASTER PUSHER
Diameter: 72" (1,829 mm)
Working Range: 24" – 72" (610 – 1,829 mm) Casing Diameter
Hex Drive: 5" (127 mm)

MISCELLANEOUS PERFORMANCE DATA
Work Lights: (3) 24 Volt
Extension Track: (2)
Master Saddle: (1) 72" (1,829 mm) compatible

QUIK SPLIT
The Quik Split frame design allows the machine to be separated into sections to accommodate lighter and fasters lifts into and out of the bore pit, and aids the operator in being able to facilitate better and safer machine positioning.

SPOIL DOOR
With a Safety-First commitment all American Augers horizontal earth boring machines are equipped with a gravity activated-manual spoil door, which deflects thrown debris from the spoil chamber.