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Factory designed and installed features equip your track loader for the extreme heat and harsh conditions of steel mill work. Maneuverability, visibility and the breakout force needed for fast cycle times make crawler loaders a rugged and efficient choice for handling slag.

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Engine
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Flywheel Power 275.0 HP 205.0 kW
Engine Model Cat C9.3 Cat C9.3
Emissions U.S. EPA Tier 4 Final/EU Stage V/Japan 2014 (Tier 4 Final), Korea Tier 4 Final emission standards OR China Nonroad Stage III, India Bharat III, Eurasian Economic Union Stage IIIA UN ECE R96 Stage IIIA emission standards, equivalent to Tier 3/Stage IIIA U.S. EPA Tier 4 Final/EU Stage V/Japan 2014 (Tier 4 Final), Korea Tier 4 Final emission standards OR China Nonroad Stage III, India Bharat III, Eurasian Economic Union Stage IIIA UN ECE R96 Stage IIIA emission standards, equivalent to Tier 3/Stage IIIA
Engine Power - Maximum - SAE J1995 310.0 HP 231.0 kW
Engine Power - Maximum - ISO 14396 306.0 HP 228.0 kW
Engine Power - Maximum - ISO 14396 (DIN) 310.0 HP 228.0 kW
Net Power (Rated) - ISO 9249/SAE J1349 275.0 HP 205.0 kW
Net Power (Rated) - ISO 9249/SAE J1349 (DIN) 278.0 HP 205.0 kW
Note (1) Engine ratings at 1,800 rpm. Engine ratings at 1,800 rpm.
Note (2) No derating required up to 2164 m (7,200 ft) altitude. No derating required up to 2164 m (7,200 ft) altitude.
Note (3) All nonroad Tier 4 Interim and Final, Stage IIIB, IV and V, Japan 2014 (Tier 4 Final) and Korea Tier 4 Final diesel engines are required to use only Ultra Low Sulfur Diesel (ULSD) with 15 ppm (mg/kg) of sulfur or less, or up to B20 biodiesel blended with ULSD. B20 should meet ASTM D7467 specification (biodiesel blend stock should meet Cat biodiesel spec, ASTM D6751 or EN 14214). Cat DEO-ULS™ or oils that meet the Cat ECF-3, API CJ-4, and ACEA E9 specification are required. Consult your OMM for further machine specific fuel recommendations. All nonroad Tier 4 Interim and Final, Stage IIIB, IV and V, Japan 2014 (Tier 4 Final) and Korea Tier 4 Final diesel engines are required to use only Ultra Low Sulfur Diesel (ULSD) with 15 ppm (mg/kg) of sulfur or less, or up to B20 biodiesel blended with ULSD. B20 should meet ASTM D7467 specification (biodiesel blend stock should meet Cat biodiesel spec, ASTM D6751 or EN 14214). Cat DEO-ULS™ or oils that meet the Cat ECF-3, API CJ-4, and ACEA E9 specification are required. Consult your OMM for further machine specific fuel recommendations.
Note (4) Diesel Exhaust Fluid (DEF) used in Cat Selective Catalytic Reduction (SCR) systems must meet the requirements outlined in the International Organization for Standardization (ISO) standard 22241. Diesel Exhaust Fluid (DEF) used in Cat Selective Catalytic Reduction (SCR) systems must meet the requirements outlined in the International Organization for Standardization (ISO) standard 22241.

Durability

        
  • Specialized heavy duty guarding, insulation, thermal deflectors and high temperature seals throughout the machine.
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  • Welded side bars reduce thermal distortion of the track roller frame.    
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  • Anti-abrasion guards protect the final drive seals.    
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  • Pressure relief/flash spark arrester on fuel tank cap.  
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  • Steel mill cab with heavy duty, laminated windshield glass.    
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  • Metallic screen on windshield grill to help protect glass and maintain good visibility; hinged for quick cleaning access.    
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  • Metallic shield integrated in bottom of cab doors helps protect windows against slag.    
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  • Specialized heat resistant seals and cab materials.    
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  • Steel plate on top of cab greatly reduces radiant heat transfer into cab.    
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  • New high capacity slag bucket features thicker structures and stronger teeth/cutting edges for longer service life.    
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  • Choice of track shoes lets you optimize your loader for traction and to work on paved surfaces.   
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  • Synthetic, fire-resistant hydraulic fluid.

Steel Mill Operating Recommendations

Caterpillar recommends that Steel Mill machines be exposed to hot slag for less than 15 minutes each hour to allow for adequate cooling time between cycles. Typically, two machines per furnace and a backup machine for the site provide the best uptime. The timing, frequency and duration of the work and cooling cycles varies by job site, but exceeding the recommended exposure time will prevent the machine from meeting expected performance levels.

EQUIPMENT - Machine Modifications Include:

        
  • Heavy duty front guard and bottom guards    
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  • Heavy duty laminated windshield glass    
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  • Side bars welded on the track roller frame    
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  • Metallic rings on low and high linkage    
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  • Floating solid pin on lower bucket linkages    
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  • High temperature seals in the equalizer bar, idlers, track rollers and final drives    
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  • High temperature braiding on wiring harnesses    
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  • Silicone material used on windshield, side windows and cab door seals, front baffles, front and rear wiper blades and door stoppers    
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  • Thermal insulation of front guard, equalizer bar rubber pads, air cleaner hose, bottom guards, enclosure doors, fenders, lift cylinders heads, hydraulic tilt lines, hydraulic lift lines, hydrostatic lines, cab sound insulation, DEF lines, lift rotary sensor and lift linkage sensor    
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  • Radiator guard with counterweights helps improve machine balance    
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  • Fire resistant floormat   
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  • Fuel spark arrester and pressure relief    
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  • Cab door windows protected at bottom    
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  • Additional metal roof on top of cab    
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  • Metallic door handles and push-button release    
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  • Manual brake release system located in the cab    
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  • 8 heat-resistant lights

EQUIPMENT - Steel Mill Package Includes:

        
  • Visibility Kit, Double Camera    
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  • Windshield Protection    
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  • Tilt Cylinder Guard    
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  • Lower Final Drive Abrasion Guard

EQUIPMENT - Requires:

        
  • Reversing Fan, Steel Mill
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  • Metallic Turbine Precleaner on Engine Air Inlet
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  • Tracks, Sealed & Non-Lubricated For Steel Mill
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  • Ecosafe Hydraulic Oil
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  • Steel Mill Cab
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  • No Product Link
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  • No Bumper
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  • 3.0 m3 (4.0 yd3) Slag Bucket
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  • Heavy Duty Bumper Counterweight

EQUIPMENT - Recommended Options:

        
  • Track Roller Guard, Steel Mill Arrangement
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  • Final Drive Abrasion Guard
Note: A Partial Steel Mill package is available for Cat® 953K and 963K Track Loader models. The base package offers specialized seals and guarding, as well as machine features to allow dealer upgrades to your track loader for work in high-temperature conditions. The Partial Steel Mill package does not include modifications required to work in hot slag. Please consult with your Cat dealer for details.

973K Steel Mill Standard Equipment

Power Train
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  • Cat C9.3 diesel engine
  • Engine mounted aftertreatment to meet U.S. EPA Tier 4 Final/EU Stage V/Japan 2014 (Tier 4 Final), Korea Tier 4 Final emission standards OR Cat C9.3 engine to meet China Nonroad Stage III, India Bharat III, Eurasian Economic Union Stage IIIA UN ECE R96 Stage IIIA emission standards, equivalent to Tier 3/Stage IIIA
  • Turbocharged with ATAAC
  • Modular cooling system for engine air intake, oil and water
  • Radiator fan, electronically controlled, hydraulically driven, temperature sensing, on demand
  • Electro Hydrostatic Control (EHC) for transmission with travel and work modes
  • Fuel cooler
  • Water separator
  • Air cleaner dry-type, axial seal with integral precleaner and dust ejection system, electronic filter condition indicator
  • Caterpillar extended life coolant

973K Steel Mill Optional Equipment

Power Train
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  • Engine thermal shield
  • Fan, basic
  • Fan, reversing
  • Fan, reversing, low speed
  • Fan, reversing, Steel Mill
  • Air inlet, preclenaer turbine