• Banner
Roof Support Carriers

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.

SH660 D - Roof Support Carrier

The SH660 D has been designed to carry 55 tonnes (60 tons) on standard forks, the highest lift capacity in its class.

  • Specification Summary

  • Carry Capacity 55.0 tonnes
  • Vehicle Length 10.07 m
  • Vehicle Width 3.1 m
  • Frame Oscillation 8.0 Degrees
  • Product Brochure


Product Details


Carry Capacity 55.0 tonnes
Vehicle Length 10.07 m
Vehicle Width 3.1 m
Frame Oscillation 8.0 Degrees
Gradients Possible (gradient data short-term only) 14.5° continuous
Ground Clearance 350.0 mm
Maximum Speed 19.0 km/h
Maximum Speed with Load 8.0 km/h
Motor/Engine Diesel
Power Rated at 172 kW to 202 kW (234 hp to 260 hp)
Pull Winch Rated at 20 tonnes (22 tons)/30 tonnes (33 tons)
Steering Steering wheel
Steering Articulation 45.0 Degrees
Torque/Tractive Effort 36000.0 kg
Turn Radius (outside) 6.4 m
Wheel Base 3.6 m


Speeds, Forward and Reverse 4

Electrical System

Type Approved Flameproof
Voltage 24.0 volts

Rated Speed/Un-Laden/No Grade

1st Gear 2.6 km/h
2nd Gear 6.3 km/h
3rd Gear 11.1 km/h
4th Gear 19.5 km/h

Service Brake

Application Spring Applied, Hydraulic Released
Type Totally Enclosed, Wet Type


Front Axle Heavy Duty Fixed
Rear Axle Heavy Duty Bolster Mount

Ground Pressure

Laden Front 1433.0 kPa
Laden Rear 480.0 kPa
Un-laden Front 450.0 kPa
Un-laden Rear 800.0 kPa

Exhaust Conditioner

Aftertreatment Catalytic Exhaust Purifier
Exhaust Filter Replaceable Element Except China
Exhaust Flame Trap Replaceable China and RSA
Make Caterpillar
Type Flameproof Wet

Grade Ability

Front to Rear 1:5
Side to Side (Empty) 1:4
Side to Side (Laden) 1:8


Maximum Laden 103000.0 kg
Unladen with Full Tanks 48000.0 kg

Engine Speeds

High Idle 2300.0 RPM
Low Idle 800.0 RPM

Fuel Consumption

At Full Power 39.4 L/hr
Average Mine Duty 20-40 L/hr (5.5-10.5 gal/hr)


Degrees of Turn Either Side 45 Degree

Service Capacities

Axle Oil (Each) 60.0 L
Drop Box Oil 8.0 L
Engine Cooling System Water 72.0 L
Engine Crankcase Oil 25.0 L
Fuel Tank 370.0 L
Hydraulic Tank 510.0 L
Transmission/Converter Oil 40.0 L
Water Make Up Tank 450.0 L


Capacity of Tow Hitch 40000.0 kg
Lift SAE @ 600 mm (23.6 in) from Fork Face 55000.0 kg
Maximum Un-braked Trailer Mass 23000.0 kg
Tractive Effort, Maximum 37500.0 kg
Winch (Front) 30000.0 kg

Torque Converter

Type Integral


ROPS/FOPS Optional
Type Protective Device MDG1

Shutdown System

System Type Cat DCS Electronic, Intrinsically Safe Approved

Park Brake

Application Spring Applied, Hydraulic Released
Type Totally Enclosed, Wet Type

Engine (6 Cylinder)

Cooling Fan Hydraulic Driven Fan
Cooling System Coolant Based Radiator
Displacement 7.2 L
Engine Make/Model Cat® C7
Maximum Power Gross 171.5 kW (230 hp) @ 2,200 rpm
Maximum Torque Tested 895 N·m (660 lb-ft) @ 1,700 rpm
Radiator Position Horizontal Rear
Type Diesel, Turbocharged

Wheels/Tires - Standard

Inflation Media Solid
Size 1371 mm O/D × 711 mm Wide (54 in O/D × 28 in Wide)
Wheel Chains Optional


Degrees Up and Down from Horizontal 7.5 Degree


Number/Location STD 2 Front, 2 Rear

Diesel for Endurance

Cat diesel roof support carriers incorporate the most efficient engines and powertrains available while boasting the lowest level of general body air emissions amongst underground diesel vehicles. Many proprietary developments - such as dry scrubber and wet bath exhaust systems with diesel particulate filtration and horizontal or vertical configuration cooling radiators - make Cat diesel roof support carriers a safe and powerful solution for your longwall move. They can move any roof support over any distance and over various roadway conditions with speed and efficiency.

Proven Yet Improved

Cat diesel vehicles across the product range share industry-proven drive units; diesel engines and other major components from the world’s leading OEM manufacturers. We combine this with our own expertise in developing low-emission solutions:
  • Particulate filtration system
  • Inline purifier catalytic converter
  • Zero-smoke dry particulate exhaust system
  • New wet scrubber exhaust system
  • Posistop brakes for extra safety
  • Positorque axles for superior traction
  • 4-speed power shift transmission for smooth operation

The Power You Need

A combination of Cat battery- and diesel-powered vehicles can offer the ideal solution for longwall installations and moves.

Diesel-powered roof support carriers carry your roof supports the full distance at maximum speed and lowest cost. Diesel equipment is a good option for new longwall installations as they do not require electrical infrastructure such as cabling and charging stations and can operate at higher speeds over long distances, up steeper gradients and over rougher terrain - conditions not suitable for battery-powered vehicles.

Diesel Power for the Long Haul

Diesel-powered equipment is used in nearly all underground mines in various tasks and functions around the world.

There are many technical features of Cat diesel vehicles that make them unique in the underground mining industry. Their general body air emissions are one of the lowest in the field, and the fact that they are compact, powerful machines with a small roadway presence and the capability to be used for multiple tasks means a high return on investment.


Cat diesel-powered roof support carriers offer independence and flexibility when you need it most - during longwall moves and reinstallation.

The four-wheel drive and rear engine arrangement are designed to offer high stability and high tractive effort whether loaded or unloaded on the roadway or installing roof supports at the longwall face.

RAS - Rapid Attachment System

The Rapid Attachment System available for the CL10 and CL15 makes an accessory change a one-man operation, allowing a broad range of accessories to be fitted in moments without removing the backing plate. Utilizing the LHD with RAS attachments during longwall relocations can greatly reduce lost production time.

Each attachment is tested and performance rated.
  • Ejector plate bucket
  • Side shift forks
  • AFC chain reeler
  • Belt reeler
  • Cable reeler
  • Jib crane [static and slewing]
  • Work baskets
  • Fuel and lubrication module
  • Materials pod system
  • Concrete hopper
  • Load indication gauge system
    • Cat 3126 DTI flame proof package
      • Fire suppression systems
        • ROPS/FOPS certified canopy
          • Tow chains
            • Wheel chains
              • Alternative approved electrical components (lights, alternators, hour meters, etc.)
                • Exhaust flame trap (optional) wet, standard for China, standard for RSA
                  • Auto lubrication system
                    • Chock carry plate
                      • Power assist trailer connection and fixed fifth wheel plate
                        • 12V electrical system STD 3126 DTI

                          Have a Question?


                          "Call Back Option available only for UAE, Bahrain, Kuwait, Oman and Qatar."