Coal Bowl Scrapers:

637K Wheel Tractor – Coal Bowl Scraper

Flywheel Power: Tractor/Scraper
425 kW (570 hp)/216 kW (290 hp)
Scraper Capacity: Heaped
50 yd3
Top Speed (Loaded)
34.7 mph
Fuel Tank Refill Capacity: Scraper
370 gal


Product Specs

  • Engine

  • Flywheel Power: Tractor/Scraper
    425 kW (570 hp)/216 kW (290 hp)
  • Operating Specifications

  • Scraper Capacity: Heaped
    50yd3
    Top Speed (Loaded)
    34.7mph
  • General Data

  • Fuel Tank Refill Capacity: Scraper
    370gal
    Overall Width
    12.93ft
    Overall Shipping Height
    13.62ft
    Scraper Capacity: Struck
    41yd3
    Scraper Capacity: Heaped
    50yd3
    Rated Load
    37 285 kg (82,200 lb)/37.285 tonnes (41.1 tons)
    Width of Cut
    11.50ft
    Maximum Depth of Cut
    17.7in
    Maximum Depth of Spread
    21.1in
    Top Speed (Loaded)
    34.7mph
    180° Curb-to-Curb Turning Width
    42.59ft
    Tires: Tractor
    37.25R35**E3
    Tires: Scraper
    37.25R35**E3
    Operating Weight (Empty)
    117782lb
    Overall Length
    609.5in
    Engine Model: Tractor
    Cat C18 ACERT™
    Engine Model: Scraper
    Cat C9.3 ACERT
    Rated Engine RPM: Tractor
    1900rpm
    Rated Engine RPM: Scraper
    2150rpm
    Flywheel Power: Tractor
    570hp
    Flywheel Power: Scraper
    290hp
    Emissions
    Cat C9.3 ACERT and Cat C18 ACERT engines meet U.S. EPA Tier 2/EU Stage II equivalent emission standards.
  • Service Refill Capacities

  • Fuel Tank
    370gal
    Hydraulic System
    37.5gal
    Crankcase: Tractor
    13.7gal
    Crankcase: Scraper
    6.5gal
    Transmission System: Tractor
    29gal
    Transmission System: Scraper
    12.9gal
    Cooling System: Tractor
    19.8gal
    Cooling System: Scraper
    16.1gal
  • Dimensions

  • Width – Overall Machine
    155in
    Width – Tractor
    137.8in
    Width – Rear Tire Centers
    96.9in
    Width – Inside of Bowl
    134in
    Width – Outside Rear Tires
    143.2in
    Height – Overall Shipping
    163in
    Height – Top of Cab
    147in
    Ground Clearance – Tractor
    26.1in
    Front of Tractor to Front Axle
    142.2in
    Axle to Vertical Hitch Pin
    20in
    Height –Scraper Blade Maximum
    21.2in
    Wheelbase
    377in
    Length–Overall Machine (Standard)
    609.5in
    Rear Axle to Rear of Machine
    95.4in
  • Cab

  • ROPS/FOPS
    Meet ISO standards
    Exterior Sound Power Level
    The exterior sound power level for the standard machine (ISO 6393:2008) is 118 dB(A).
  • Safety Criteria Compliance Standards

  • Rollover Protection Structure (ROPS)
    ISO 3471:2008 for up to 21 282 kg (46,919 lb)
    Falling Object Protective Structure (FOPS)
    ISO 3449:2005 Level II
    Brakes
    ISO 3450:2011
    Steering System
    ISO 5010:2007
    Seat Belt
    SAE J386:FEB2006
    Reverse Alarm
    ISO 9533:2010
  • Travel Speeds (Runout)

  • Transmission Gear: First
    3.4mph
    Transmission Gear: Second
    6.2mph
    Transmission Gear: Third
    7.7mph
    Transmission Gear: Fourth
    10.5mph
    Transmission Gear: Fifth
    14.1mph
    Transmission Gear: Sixth
    19.0mph
    Transmission Gear: Seventh
    25.7mph
    Transmission Gear: Eighth
    34.7mph
    Transmission Gear: Reverse
    6.2mph
  • Implement Cycle Times

  • Bowl Raise
    3.5seconds
    Bowl Lower
    3.5seconds
    Apron Raise
    4.0seconds
    Apron Lower
    3.8seconds
    Ejector Extend
    8.5seconds
    Ejector Retract
    8.5seconds
    Bail Raise
    1.5seconds
    Bail Lower
    2.1seconds

Equipment

  • Power Train – Tractor
    • Cat C18 ACERT engine with MEUI
    • Compression engine brake
    • Electric start, 24V
    • Air cleaner, dry type with precleaner
    • Fan, hydraulic
    • Ground level engine shutdown
    • Radiator, aluminum unit core, 9 fins per inch
    • Guard, crankcase
    • Starting aid, ether
    • Braking system:
      • Primary and secondary, wet disc, hydraulic actuated
      • Parking, hydraulic-released, spring-applied
    • Throttle lock
    • Transmission:
      • 8-speed planetary power shift
      • ECPC control
      • APECS software
      • Programmable top gear selection
      • Transmission hold
      • Differential lock
      • Guard, power train
      • Standard tire spin reduction
      • Ground speed control
      • Machine speed limit
      • Differential lock protection
  • Power Train – Scraper
    • Cat C9.3 ACERT engine
      • High pressure common rail fuel
      • Constant lift engine brake
    • Electric start, 24V
    • Air cleaner, dry type with precleaner
    • Fan, mechanical driven
    • Ground level engine shutdown
    • Radiator, aluminum unit core, 9 fins per inch
    • Starting aid, either
    • Braking system:
      • Primary and secondary, dry caliper, hydraulic actuated
    • Transmission:
      • 4-speed (torque converter drive)
      • Planetary power shift
  • Electrical – Tractor
    • Alternator, 150 Amp
    • Batteries (4), 12V, 1,000 CCA, maintenance free, high output
    • Electrical system, 24V
    • Lighting system:
      • Headlights, LED
      • Turn signals with hazard function, LED floodlights, (2) cutting edge (1) bowl, halogen side vision (2)
    • Starting/charging receptacle
  • Electrical – Scraper
    • Alarm, backup
    • Batteries (4) 12V, 1,000 CAA, maintenance free, high output
    • Alternator, 65 Amp
    • Electrical system, 24V
    • Lighting system:
      • Brake lights, LED
      • Turn signals with hazard function, LED
  • Operator Environment – Tractor
    • HVAC system, heat, AC, defrost
    • Thermostat control of HVAC system
    • Coat hook
    • Lunchbox platform with holding strap
    • Diagnostic connection (2)
    • 12V power ports (2)
    • Differential lock (1)
    • Dome courtesy light
    • Horn, electric
    • T-Handle implement control
    • Mirror, rearview
    • Radio ready
    • ROPS/FOPS cab, pressurized
    • Keypad switches:
      • Throttle lock
      • Wipers/washers
      • Hazard lights
      • Retarding level select
      • Work lights on, off
      • Information mode on Messenger Display
    • Safety tab rocker switches
    • Seat belt, static two-piece
    • Seat, Cat Advanced Ride Management (ARM), Cat Comfort Series 3, rotates 30 degrees
    • Steering wheel, tilt, telescoping, padded
    • Windows, right side emergency egress
    • Windows, sliding
    • Windows, laminated, zipped in
    • Windshield wipers, front and rear windows, includes washers
    • Door lock
    • Messenger Display
    • Gauges, warnings include:
      • Coolant temperature
      • Engine oil temperature
      • Hydraulic oil temperature
      • Fuel level
      • Park brake
      • Implement lockout
      • Brake system
      • Throttle lock
      • System voltage
      • Secondary steering
      • Bail down
      • Ejector auto
      • Differential lock
      • Apron float
      • Transmission hold
      • Cushion hitch
      • High beam lights
      • Action lamp
      • Engine speed, rpm
      • Gear selection
  • Fluids
    • Extended Life Coolant to –37° C (–34° F)
  • Other Standard Equipment – Tractor
    • Advanced cushion hitch
    • Accumulators (cushion hitch) with Canadian Registration Number (CRN)
    • Fast oil change
    • Fenders, non-metallic
    • Heater, engine coolant 120V
    • Rims (2)
    • Tow hooks, front
    • Vandalism locks
    • Heater, engine coolant 120V
    • Steering locks
  • Other Standard Equipment – Scraper
    • Coal Bowl
      • 31 m3 (41 yd3), struck
      • 38 m3 (50 yd3), heaped
    • Vandalism locks
    • Scraper fenders
    • Fast oil change
    • Rims (2)
    • Hydraulic position sensing cylinders (bowl lift and apron)
  • Steering Arrangements
    • Secondary Steering Arrangement
  • Integrated Technologies
    • Sequence Assist Arrangement
    • Advanced Tire Spin Reduction
  • Other Attachments
    • Camera arrangement – WAVS
    • Cab beacon
    • Air horn
    • Air horn and beacon
    • Wiring group
  • Service Instructions
    • Film arrangement – International (ISO)

Request a Quote

Please leave this field empty.

Find a Walker CAT
Location or Rep Near You