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637K Wheel Tractor – Coal Bowl Scraper

637K coal bowls are longer and higher than standard wheel tractor scraper bowls, allowing them to haul 38 m (50 yd) of low density loose coal. The bowls are designed and built to specifically deliver in coming loose coal to the stock pile and reserve stock piled coal to the feeder system.

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

PRICE (USD)
Call 800-637-5000 for rate information

Operating Specifications

  • Top Speed (Loaded)
    34.7 mph
  • Scraper Capacity - Heaped
    50 yd³
  • Top Speed - Loaded
    34.7 mile/h

Engine

  • Flywheel Power - Tractor/Scraper
    425 kW (570 hp)/216 kW (290 hp)

General

  • Fuel Tank Refill Capacity - Scraper
    370 gal (US)
  • Overall Width
    12.93 ft
  • Overall Shipping Height
    13.62 ft
  • Scraper Capacity - Struck
    41 yd³
  • Scraper Capacity - Heaped
    50 yd³
  • Rated Load
    34 472 kg (76,000 lb)/34.20 tonnes (38 tons)
  • Width - Cut
    11.5 ft
  • Maximum Depth of Cut
    17.7 in
  • Maximum Depth of Spread
    21.1 in
  • Top Speed - Loaded
    34.7 mile/h
  • 180° Curb-to-Curb Turning Width
    42.59 ft
  • Tires - Tractor
    37.25R35**E3
  • Tires - Scraper
    37.25R35**E3
  • Operating Weight - Empty
    117782 lb
  • Overall Length
    609.5 in
  • Engine Model - Tractor
    Cat C18
  • Engine Model - Scraper
    Cat C9.3
  • Rated Engine RPM - Tractor
    1900 r/min
  • Rated Engine RPM - Scraper
    2150 r/min
  • Flywheel Power - Tractor
    570 HP
  • Flywheel Power - Scraper
    290 HP
  • Emissions
    Cat C9.3 and Cat C18 engines meet U.S. EPA Tier 4 Final/EU Stage IV engine emission standards.

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).
  • ROPS/FOPS
    Meet ISO standards

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
    3.4 mile/h
  • Transmission Gear - Second
    6.2 mile/h
  • Transmission Gear - Third
    7.7 mile/h
  • Transmission Gear - Fourth
    10.5 mile/h
  • Transmission Gear - Fifth
    14.1 mile/h
  • Transmission Gear - Sixth
    19 mile/h
  • Transmission Gear - Seventh
    25.7 mile/h
  • Transmission Gear - Eighth
    34.7 mile/h
  • Transmission Gear - Reverse
    6.2 mile/h

Implement Cycle Times

  • Bowl Raise
    3.5 s
  • Bowl Lower
    3.5 s
  • Apron Raise
    4 s
  • Apron Lower
    3.8 s
  • Ejector Extend
    8.5 s
  • Ejector Retract
    8.5 s
  • Bail Raise
    1.5 s
  • Bail Lower
    2.1 s

Service Refill Capacities

  • Crankcase - Tractor
    13.7 gal (US)
  • Crankcase - Scraper
    6.5 gal (US)
  • Transmission System - Tractor
    29 gal (US)
  • Transmission System - Scraper
    12.9 gal (US)
  • Cooling System - Tractor
    19.8 gal (US)
  • Cooling System - Scraper
    16.1 gal (US)
  • Fuel Tank
    370 gal
  • Hydraulic System
    37.5 gal
  • Diesel Exhaust Fluid - Tractor
    8 gal (US)
  • Diesel Exhaust Fluid - Scraper
    5.8 gal (US)
  • Fuel Tank
    370 gal (US)
  • Hydraulic System
    37.5 gal (US)

Dimensions

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

MAXIMIZE PERFORMANCE

  • Coal Bowls are longer and higher than standard scraper bowls, which allows Wheel Tractor-Scrapers to haul 38 m (50 yd) of low density loose coal. The bowls are designed and built to specifically deliver in coming loose coal to the stock pile and reserve stock piled coal to the feeder system.
  • Sequence Assist (optional) uses cylinder position sensors to automate bowl, apron and further implement controls throughout the four core work cycles: Dig, Haul, Unload and Return. When utilized this can reduce up to 14 individual operator commands per cycle. Sequence Assist simplifies control over the implements, reduces joystick usage, automatically controls cushion hitch, transmission hold and ejector.

SAVE ON MAINTENANCE TIME

  • The fuel, water and engine oil are relocated at ground level on the right hand side of the machine for easy access.
  • In cold weather conditions the machine will use the Auto Stall feature to help warm up the transmission oil faster resulting in the machine shifting out of torque converter drive (2nd gear) faster than on previous models.

BUILT-IN SAFETY FEATURES

  • Brakes have been changed from an air actuated drum shoe brake to a hydraulic actuated tractor wet disc brake and a scraper dry caliper.
  • Tire Spin Reduction allows the machine to control the slip of the tractor tires only. When Tire Spin Reduction is selected the machine will control wheel spin on the tractor by keeping the slip in the optimal range for loading by adjusting engine rpms with no additional operator input.
  • Engine Over Speed Protection - In the event of an engine over speed situation, the compression brake or brakes will automatically engage with no operator input. The machine determines the over speed condition based on rate of acceleration and applies compression brakes automatically.
  • Differential Lock Engagement Protection allows the machine to prevent the operator from engaging the differential lock when damage could occur.
  • Coal bowl scrapers are effective in compacting coal, which reduces the risk of spontaneous combustion of coal in the stockpile by eliminating the air spaces.

OPERATOR COMFORT AND CONTROL

  • Advanced Cushion Hitch allows the cushion hitch to prevent end stroke by having the ability to predict end stroke events and manage the rate of dampening. Resulting in reduced hitch maintenance and improved operator ride in rough conditions.
  • The K Series steering system design requires significantly less steering effort. The reduced steering effort will allow for decreased operator fatigue and a more efficient operator resulting in possible higher rates of production late in the work cycle.
  • The K Series cab interior improves operator comfort and visibility. The overall interior is 21% larger than the G Series cab.

EFFICIENCY THROUGH TECHNOLOGY

  • Machine Speed Limitis designed to take the place of top gear selection. If the machine top speed needs to be limited the operator can select the top speed through the display or the top speed can be set in ET. This will allow the machine to find the correct gear that works best for the engine and transmission. Allowing the engine and transmission to select the correct gear to pull the load in most cases resulting in a lower engine load factor and lower fuel burn verses using top gear selection that required the machine to run at engine speeds at or close to high idle.
  • Ground Speed Control sets the desired top speed by the operator if job site conditions or segment speed limits require a speed less than full run out. Machine Speed Limit is intended for use when top speed needs to be limited for longer durations and Ground Speed Control is intended for use when the top speed needs to be reduced for shorter segments or intermediate periods of time. The operator can set the desired top speed and the machine will find the correct gear that works best for the engine and transmission. In most cases, allowing the engine and transmission to select the correct gear to pull the load will result in a lower engine load factor and lower fuel burn verses top gear selection.
  • Fuel Economy Mode is a two part feature when selected, the first part of the feature lowers the transmission shift points allowing shifting to take place at lower rpms to aid in fuel savings. The second part of the Fuel Economy Mode allows the machine, when operated at engine rpms less than full throttle, to automatically vary the power distribution between the tractor and the scraper, allowing the machine to utilize the more efficient tractor power train vs. the full time torque convertor drive scraper power train.

Standard Equipment:

  • Power Train – Tractor
    • Cat C18 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 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)

Optional Equipment:

  • 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 – U.S. (ANSI)
    • Film arrangement – International (ISO)