973K Track Loader – Steel Mill Configuration

973K Track Loader – Steel Mill Configuration

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 ...



  • Specialized heavy duty guarding, insulation, thermal deflectors and high temperature seals throughout the machine.

  • Welded side bars reduce thermal distortion of the track roller frame.    

  • Anti-abrasion guards protect the final drive seals.    

  • Pressure relief/flash spark arrester on fuel tank cap.  

  • Steel mill cab with heavy duty, laminated windshield glass.    

  • Metallic screen on windshield grill to help protect glass and maintain good visibility; hinged for quick cleaning access.    

  • Metallic shield integrated in bottom of cab doors helps protect windows against slag.    

  • Specialized heat resistant seals and cab materials.    

  • Steel plate on top of cab greatly reduces radiant heat transfer into cab.    

  • New high capacity slag bucket features thicker structures and stronger teeth/cutting edges for longer service life.    

  • Choice of track shoes lets you optimize your loader for traction and to work on paved surfaces.   

  • 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    

  • Heavy duty laminated windshield glass    

  • Side bars welded on the track roller frame    

  • Metallic rings on low and high linkage    

  • Floating solid pin on lower bucket linkages    

  • High temperature seals in the equalizer bar, idlers, track rollers and final drives    

  • High temperature braiding on wiring harnesses    

  • Silicone material used on windshield, side windows and cab door seals, front baffles, front and rear wiper blades and door stoppers    

  • 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    

  • Radiator guard with counterweights helps improve machine balance    

  • Fire resistant floormat   

  • Fuel spark arrester and pressure relief    

  • Cab door windows protected at bottom    

  • Additional metal roof on top of cab    

  • Metallic door handles and push-button release    

  • Manual brake release system located in the cab    

  • 8 heat-resistant lights

EQUIPMENT - Steel Mill Package Includes:


  • Visibility Kit, Double Camera    

  • Windshield Protection    

  • Tilt Cylinder Guard    

  • Lower Final Drive Abrasion Guard

EQUIPMENT - Requires:


  • Reversing Fan, Steel Mill

  • Metallic Turbine Precleaner on Engine Air Inlet

  • Tracks, Sealed & Non-Lubricated For Steel Mill

  • Ecosafe Hydraulic Oil

  • Steel Mill Cab

  • No Product Link

  • No Bumper

  • 3.0 m3 (4.0 yd3) Slag Bucket

  • Heavy Duty Bumper Counterweight

EQUIPMENT - Recommended Options:


  • Track Roller Guard, Steel Mill Arrangement

  • 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.

Standard Equipment:

Optional Equipment:

    Power Train
    • Engine thermal shield
    • Fan, basic
    • Fan, reversing
    • Fan, reversing, low speed
    • Fan, reversing, Steel Mill
    • Air inlet, preclenaer turbine
    Operator Environment
    • Cab
    • Deluxe cab
    • Steel Mill cab
    • Seat, cloth, air suspension, no side-to-side isolator
    • Seat, cloth, air suspension, heated, side-to-side isolator
    • Transmission control, V-lever or joystick
    • Visibility kit - single camera
    • Visibility kit - double camera
    • Radio, AM/FM/AUX/USB/Bluetooth
    • Cab air precleaner
    • Hydraulic oil, biodegradable
    • Hydraulic oil, EcoSafe
    • Hydraulics Packages: General purpose - Two-valve joystick, Three-valve joystick, Two-valve, two levers, Three valves, two levers; Multi-Purpose - Three-valve joystick, Four-valve joystick
    • Tilt cylinder guards
    • Guard, front lights
    • Windshield protection
    • Final drive abrasion guard
    • Final drive abrasion guard, lower
    • Rotating beacon
    • Track roller guard
    • Track roller guard, Steel Mill
    • Track Groups (40 sections) - Heavy Duty Track Groups - Sealed and Lubricated: 500 mm (19.7 in) double grouser, center hole; 510 mm (20.1 in) extreme service, single grouser, center hole; 550 mm (21.6 in) double grouser; 675 mm (26.6 in) double grouser; 675 mm (26.6 in) double grouser, center hole; 675 mm (26.6 in) single grouser, center hole; 830 mm (32.7 in) double grouser, wide gauge
    • Track Groups (40 sections) - Heavy Duty Track Groups - Sealed and Non-Lubricated - Steel Mill: 500 mm (19.7 in) double grouser; 500 mm (19.7 in) flat; 500 mm (19.7 in) triple grouser; 500 mm (19.7 in) alternate flat shoe
    • General Purpose: 3.0 m³ (4.0 yd³), welded flush adaptors; 3.2 m³ (4.2 yd³), pin on; 3.2 m³ (4.2 yd³), heavy duty, pin on; 3.2 m³ (4.2 yd³), heavy duty, full edge, pin on; 4.2 m³ (5.5 yd³), Performance Series; 4.0 m³ (5.2 yd³), Performance Series flush
    • Multi-Purpose: 3.0 m³ (4.0 yd³), heavy duty, pin on; 3.0 m³ (4.0 yd³), pin on
    • Wide: 4.2 m³ (5.5 yd³), Performance Series
    • Landfill: 4.6 m³ (6.0 yd³), multi-purpose landfill, heavy duty, pin on; 4.9 m³ (6.4 yd³), general purpose landfill, heavy duty, pin on
    • Steel Mill: 3.0 m³ (4.0 yd³), slag bucket
    Other Attachments
    • Counterweight
    • Counterweight, heavy duty bumper
    • Ripper, multi-shank
    • Hitch, ripper
    • Striker bars, rear
    • Bumper, standard
    • No bumper
    • Rear step, standard
    • Rear step, ripper
    • Additional work tools: Quick coupler, Blades, Forks, Material handling arms, Rakes
    Starters, Batteries And Alternators
    • Engine coolant heater, 120V
    • Engine coolant heater, 240V
    Maintenance And Related Attachments
    • Maintenance package, deluxe
    • High speed oil change
    • Sediment pump
    • Fuel tank refueling pump
    • Service package, standard
    • Locking bar that holds cab at 30 degrees safely, front windshield
    • Service package, extended: Manual hydraulic system enabling cab tilt and lock at 30 degrees safely in the field; Shovel holder (shovel not included)
    • Antifeeze -50 degrees Celcius (-58 degrees Fahrenheit)
    Technology Products
    • Product Link - Satellite
    • Product Link - Cellular
    • Grade control mast