Caterpillar is the global market leader and supplier of complete longwall systems. All over the world, our equipment and systems are meeting the demands of underground mining under the most stringent conditions. Adapted to the mining challenges faced by our customers today, Cat customized systems range from hydraulic roof supports, automated plow systems, shearers, face conveyors and drive systems to automation and roof support carriers.Caterpillar delivers your system of choice, from low to high seam heights, for the longest longwalls and highest production demands.

Contact us today to talk with one of our representatives about Cat Underground – Longwall.


Armored Face Conveyors

Model
Top Plate Thickness
Bottom Plate Thickness
Dogbone Breaking Force
 

Top Plate Thickness

30 mm (1.18 in)

Bottom Plate Thickness

0.78 in / 20.0 mm

Bottom Plate Thickness

0.78 in / 20.0 mm

Dogbone Breaking Force

449618.0 lb / 2000.0 kN

Top Plate Thickness

40 mm (1.57 in)

Bottom Plate Thickness

0.98 in / 25.0 mm

Bottom Plate Thickness

0.98 in / 25.0 mm

Dogbone Breaking Force

809312.0 lb / 3600.0 kN

Top Plate Thickness

50 mm (1.96 in)

Bottom Plate Thickness

1.18 in / 30.0 mm

Bottom Plate Thickness

1.18 in / 30.0 mm

Dogbone Breaking Force

1011640.0 lb / 4500.0 kN

Top Plate Thickness

30 plus 25 mm (1.18 plus 0.98 in)

Bottom Plate Thickness

1.18 in / 30.0 mm

Bottom Plate Thickness

1.18 in / 30.0 mm

Dogbone Breaking Force

1011640.0 lb / 4500.0 kN

Top Plate Thickness

30 + 25 mm (1.18 + 0.98 in)

Bottom Plate Thickness

1.18 in / 30.0 mm

Bottom Plate Thickness

1.18 in / 30.0 mm

Dogbone Breaking Force

1011640.0 lb / 4500.0 kN

CST Drive Systems

Model
Maximum Output Torque for a Short Duration (3 sec.)
Maximum Input Speed (motor speed)
Weight (without oil) - In-line Drive System
 

Maximum Output Torque for a Short Duration (3 sec.)

848196.0 ft-lb / 1150000.0 N·m

Weight (without oil) - In-line Drive System

36165.0 lb / 16400.0 kg

Maximum Output Torque for a Short Duration (3 sec.)

331858.0 ft-lb / 450000.0 N·m

Weight (without oil) - In-line Drive System

15873.0 lb / 7200.0 kg

Maximum Output Torque for a Short Duration (3 sec.)

331858.0 ft-lb / 450000.0 N·m

Weight (without oil) - In-line Drive System

13000.0 lb / 5900.0 kg

Mining Controls

Model
Operating System
Processor
RAM Memory
 

Plows

Model
Coal Hardness
Maximum Installed Power
Maximum Cutting Depth
 

Coal Hardness

Medium to extremely hard coal

Maximum Installed Power

2 × 800 kW (2 × 1,080 hp)

Maximum Installed Power

2 × 800 kW (2 × 1,080 hp)

Maximum Cutting Depth

8.27 in / 210.0 mm

Maximum Cutting Depth

8.27 in / 210.0 mm

Coal Hardness

Soft-hard Coal

Coal Hardness

Soft-hard coal

Maximum Installed Power

2 × 400 kW (2 × 536 hp)

Maximum Installed Power

2 × 400 kW (2 × 536 hp)

Maximum Cutting Depth

0.67 ft / 205 mm

Maximum Cutting Depth

0.67 ft / 205 mm

Coal Hardness

Soft - hard coal

Maximum Installed Power

2 × 400 kW (2 × 536 hp)

Maximum Cutting Depth

7.48 in / 190.0 mm

Maximum Cutting Depth

0.62 ft / 190.0 mm

Roof Support Carriers

Model
Carry Capacity
Vehicle Length
Vehicle Width
 

Roof Supports

Model
Height (Extended)
Shield Centers
Shield Density
 

Shearers

Model
Typical Machine Length
Installed Power
Haulage System
 

Typical Machine Length

45.1 ft / 13.75 m

Installed Power

2548 hp / 1900 kW

Installed Power

Up to 1780 kW (Up to 2,387 hp)

Installed Power

Up to 1780 kW (Up to 2,387 hp)

Haulage System

AC

Haulage System

AC inverter drive

Haulage System

AC inverter drive

Variable Frequency Drives

Model
Rated Power
Input Voltage
Maximum Operational Torque