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.
Caterpillar
637K Wheel Tractor – Coal Bowl Scraper
Overview
Photos
-
637K Coal Bowl Scraper
360° View
Exterior
360 Exterior View
Interior
360 Interior View
Documents
Features
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.
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.
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.
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.
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.
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.
Specifications
-
Engine
Spec Value Flywheel Power - Tractor/Scraper 425 kW (570 hp)/216 kW (290 hp) -
Operating Specifications
Spec Value Scraper Capacity - Heaped 50 yd³ Top Speed - Loaded 34.7 mile/h -
Safety Criteria Compliance Standards
Spec Value Brakes ISO 3450:2011 Steering System ISO 5010:2007 Seat Belt SAE J386:FEB2006 Falling Object Protective Structure (FOPS) ISO 3449:2005 Level II Reverse Alarm ISO 9533:2010 Rollover Protection Structure (ROPS) ISO 3471:2008 for up to 21 282 kg (46,919 lb) -
General
Spec Value 180° Curb-to-Curb Turning Width 42.59 ft Flywheel Power - Tractor 570 HP Tires - Tractor 37.25R35**E3 Overall Width 12.93 ft Rated Engine RPM - Scraper 2150 r/min Rated Engine RPM - Tractor 1900 r/min Operating Weight - Empty 117782 lb Scraper Capacity - Heaped 50 yd³ Width - Cut 11.5 ft Top Speed - Loaded 34.7 mile/h Overall Length 609.5 in Fuel Tank Refill Capacity - Scraper 370 gal (US) Scraper Capacity - Struck 41 yd³ Overall Shipping Height 13.62 ft Maximum Depth of Cut 17.7 in Emissions Cat C9.3 and Cat C18 engines meet U.S. EPA Tier 4 Final/EU Stage IV engine emission standards. Maximum Depth of Spread 21.1 in Flywheel Power - Scraper 290 HP Rated Load 34 472 kg (76,000 lb)/34.20 tonnes (38 tons) Engine Model - Scraper Cat C9.3 Engine Model - Tractor Cat C18 Tires - Scraper 37.25R35**E3 -
Service Refill Capacities
Spec Value Cooling System - Scraper 16.1 gal (US) Diesel Exhaust Fluid - Scraper 5.8 gal (US) Transmission System - Tractor 29 gal (US) Crankcase - Tractor 13.7 gal (US) Diesel Exhaust Fluid - Tractor 8 gal (US) Fuel Tank 370 gal (US) Transmission System - Scraper 12.9 gal (US) Hydraulic System 37.5 gal (US) Cooling System - Tractor 19.8 gal (US) Crankcase - Scraper 6.5 gal (US) -
Travel Speeds - Runout
Spec Value Transmission Gear - Eighth 34.7 mile/h Transmission Gear - First 3.4 mile/h Transmission Gear - Fourth 10.5 mile/h Transmission Gear - Reverse 6.2 mile/h Transmission Gear - Third 7.7 mile/h Transmission Gear - Seventh 25.7 mile/h Transmission Gear - Fifth 14.1 mile/h Transmission Gear - Sixth 19 mile/h Transmission Gear - Second 6.2 mile/h -
Implement Cycle Times
Spec Value Bail Raise 1.5 s Bowl Lower 3.5 s Apron Lower 3.8 s Ejector Retract 8.5 s Bail Lower 2.1 s Apron Raise 4 s Ejector Extend 8.5 s Bowl Raise 3.5 s -
Dimensions
Spec Value Width - Overall Machine 155 in Width - Tractor 137.8 in Ground Clearance - Tractor 26.1 in Axle to Vertical Hitch Pin 20 in Height - Top of Cab 147 in Width - Outside Rear Tires 143.2 in Height - Scraper Blade Maximum 21.2 in Rear Axle - Rear of Machine 95.4 in Width - Rear Tire Centers 96.9 in Front of Tractor to Front Axle 142.2 in Width - Inside of Bowl 134 in Length - Overall Machine - Standard 609.5 in Height - Overall Shipping 163 in Wheel Base 377 in -
Cab
Spec Value 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).
Standard Equipment
NOTE
- Standard and optional equipment may vary. Consult your Cat dealer for details.
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
NOTE
- Standard and optional equipment may vary. Consult your Cat dealer for details.
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)
Sign up for Ziegler CAT emails
Events, updates, and offers