Coal Bowl Scrapers Caterpillar 637K

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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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.

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.

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.

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.

Specificatii tehnice

SPECIFICATII TEHNICE

Engine
Flywheel Power - Tractor/Scraper 425 kW (570 hp)/216 kW (290 hp)
Operating Specifications
Scraper Capacity - Heaped 38 m³
Top Speed - Loaded 55.8 km/h
Safety Criteria Compliance Standards
Brakes ISO 3450:2011
Steering System ISO 5010:2007
General
180° Curb-to-Curb Turning Width 12.98 m
Service Refill Capacities
Cooling System - Scraper 61 l
Travel Speeds - Runout
Transmission Gear - Eighth 55.8 km/h
General
Flywheel Power - Tractor 425 kW
Implement Cycle Times
Bail Raise 1.5 s
Dimensions
Width - Overall Machine 3937 mm
Service Refill Capacities
Diesel Exhaust Fluid - Scraper 22 l
Travel Speeds - Runout
Transmission Gear - First 5.5 km/h
General
Tires - Tractor 37.25R35**E3
Service Refill Capacities
Transmission System - Tractor 110 l
Dimensions
Width - Tractor 3499 mm
Service Refill Capacities
Crankcase - Tractor 52 l
Dimensions
Ground Clearance - Tractor 664 mm
Implement Cycle Times
Bowl Lower 3.5 s
Service Refill Capacities
Diesel Exhaust Fluid - Tractor 30.5 l
Implement Cycle Times
Apron Lower 3.8 s
General
Overall Width 3.94 m
Rated Engine RPM - Scraper 2150 r/min
Dimensions
Axle to Vertical Hitch Pin 509 mm
Safety Criteria Compliance Standards
Seat Belt SAE J386:FEB2006
Falling Object Protective Structure (FOPS) ISO 3449:2005 Level II
Dimensions
Height - Top of Cab 3733 mm
Service Refill Capacities
Fuel Tank 1400 l
General
Rated Engine RPM - Tractor 1900 r/min
Operating Weight - Empty 52425 kg
Travel Speeds - Runout
Transmission Gear - Fourth 16.9 km/h
General
Scraper Capacity - Heaped 38 m³
Width - Cut 3.51 m
Travel Speeds - Runout
Transmission Gear - Reverse 9.9 km/h
General
Top Speed - Loaded 55.8 km/h
Overall Length 15480 mm
Travel Speeds - Runout
Transmission Gear - Third 12.4 km/h
Cab
ROPS/FOPS Meet ISO standards
Service Refill Capacities
Transmission System - Scraper 49 l
General
Fuel Tank Refill Capacity - Scraper 1400 l
Scraper Capacity - Struck 31 m³
Implement Cycle Times
Ejector Retract 8.5 s
General
Overall Shipping Height 4.15 m
Service Refill Capacities
Hydraulic System 142 l
Travel Speeds - Runout
Transmission Gear - Seventh 41.95 km/h
Transmission Gear - Fifth 22.7 km/h
Dimensions
Width - Outside Rear Tires 3636 mm
Height - Scraper Blade Maximum 538 mm
Rear Axle - Rear of Machine 2424 mm
General
Maximum Depth of Cut 450 mm
Emissions Cat C9.3 and Cat C18 engines meet U.S. EPA Tier 4 Final/EU Stage IV engine emission standards.
Implement Cycle Times
Bail Lower 2.1 s
Travel Speeds - Runout
Transmission Gear - Sixth 30.6 km/h
General
Maximum Depth of Spread 535 mm
Flywheel Power - Scraper 216 kW
Implement Cycle Times
Apron Raise 4 s
Service Refill Capacities
Cooling System - Tractor 75 l
General
Rated Load 34 472 kg (76,000 lb)/34.20 tonnes (38 tons)
Dimensions
Width - Rear Tire Centers 2462 mm
Front of Tractor to Front Axle 3612 mm
General
Engine Model - Scraper Cat C9.3
Engine Model - Tractor Cat C18
Tires - Scraper 37.25R35**E3
Travel Speeds - Runout
Transmission Gear - Second 10 km/h
Safety Criteria Compliance Standards
Reverse Alarm ISO 9533:2010
Service Refill Capacities
Crankcase - Scraper 24.5 l
Dimensions
Width - Inside of Bowl 3404 mm
Implement Cycle Times
Ejector Extend 8.5 s
Bowl Raise 3.5 s
Cab
Exterior Sound Power Level The exterior sound power level for the standard machine (ISO 6393:2008) is 118 dB(A).
Dimensions
Length - Overall Machine - Standard 15480 mm
Safety Criteria Compliance Standards
Rollover Protection Structure (ROPS) ISO 3471:2008 for up to 21 282 kg (46,919 lb)
Dimensions
Height - Overall Shipping 4140 mm
Wheel Base 9576 mm
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