Screpere Cat® 637K

Cat’s 637K Wheel Tractor-Scraper is engineered to conquer challenges operators face worldwide. With its strength and durability, it works in some of the most difficult conditions and materials one can find.

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  • Load Assist (optional) is designed to help shorten the learning curve of inexperienced operators to ensure consistency and faster loading of material while reducing effort of the operator. Based on the speed of the machine, Load Assist automatically adjusts the cutting edge height to manage wheel slip and to ensure consistent and efficient loading in bulk earthmoving applications.
  • 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.
  • 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.
  • The Payload Estimator (optional) will calculate the payload of the machine in tonnes or tons by measuring the bowl lift cylinder pressures at the beginning of the loaded haul segment. This feature works best when using Sequence Assist. Using Payload Estimator during testing has achieved better than 95% accuracy when compared to actual scale weights. The Payload Estimator feature comes automatically when a machine is ordered with Sequence Assist.
  • Cat Grade Control (optional) intelligently ensures the machine does not cut below grade in the cut area or over fill in the fill area, avoiding rework and moving unnecessary material.
  • 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.
  • Machine Speed Limit is 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.


  • 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.
  • 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.


  • Tire Spin Reduction feature will allow the machine to control the slip of the tractor tires only.
  • 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.


  • The fuel, water and engine oil are relocated at ground level on the right hand side of the machine for easy access.

Specificatii tehnice


Rated Load 37 200 kg (82,200 lb); 37.2 tonnes (41.1 tons)
Fuel Tank Refill Capacity - Scraper 1400 l
180° Curb-to-Curb Turning Width 12.23 m
Overall Shipping Height 4.15 m
Overall Width 3.94 m
Top Speed - Loaded 55.8 km/h
Scraper Capacity - Heaped 26 m³
Width - Cut 3.51 m
Maximum Depth of Cut 450 mm
Tires - Scraper 37.25R35**E3
Maximum Depth of Spread 535 mm
Scraper Capacity - Struck 18.3 m³
Tires - Tractor 37.25R35**E3
Rated Engine RPM - Tractor 1900 r/min
Rated Engine RPM - Scraper 2150 r/min
Flywheel Power - Scraper 216 kW
Engine Model - Scraper Cat C9.3
Emissions Cat C9.3 and C18 engines meet U.S. EPA Tier 4 Final/EU Stage IV emission standards.
Flywheel Power - Tractor 425 kW
Engine Model - Tractor Cat C18
Tractor Engine
Flywheel Power - Tractor/Scraper 425 kW
Scraper Bowl
Scraper Capacity - Heaped 26 m³
Top Speed - Loaded 55.8 km/h
Service Refill Capacities
Crankcase - Tractor 52 l
Crankcase - Scraper 24.5 l
Transmission System - Tractor 110 l
Hydraulic System 142 l
Diesel Exhaust Fluid - Scraper 22 l
Diesel Exhaust Fluid - Tractor 30.5 l
Fuel Tank 1400 l
Transmission System - Scraper 49 l
Cooling System - Scraper 61 l
Cooling System - Tractor 75 l
Front of Tractor to Front Axle 3612 mm
Axle to Vertical Hitch Pin 509 mm
Wheel Base 8808 mm
Rear Axle - Rear of Machine 2292 mm
Width - Inside of Bowl 3404 mm
Height - Scraper Blade Maximum 510 mm
Length - Overall Machine - Standard 15164 mm
Height - Overall Shipping 4145 mm
Width - Outside Rear Tires 3636 mm
Length - Maximum (Push-Pull) 16640 mm
Extended Push Block (Push-Pull) 2744 mm
Width - Rear Tire Centers 2462 mm
Width - Overall Machine 3937 mm
Width - Tractor 3499 mm
Height - Top of Cab 3733 mm
Ground Clearance - Tractor 664 mm
Non Push-Pull
Overall Length 15.04 m
Operating Weight - Empty 52140 kg
Overall Length - With Bail Down 16.64 m
Operating Weight - Empty 54005 kg
ROPS/FOPS ROPS/FOPS meet “ISO Standards.”
Exterior Sound Level The exterior sound power level for the standard machine (ISO 6393) is 116 dB(A).
Safety Criteria Compliance Standards
Seat Belt SAE J386:FEB2006
Reverse Alarm ISO 9533:2010
Rollover Protection Structure (ROPS) ISO 3471:2008 for up to 21 282 kg (46,919 lb)
Brakes ISO 3450:2011
Falling Object Protective Structure (FOPS) ISO 3449:2005 Level II
Steering System ISO 5010:2007
Travel Speeds - Runout
Transmission Gear - Third 12.4 km/h
Transmission Gear - Reverse 9.9 km/h
Transmission Gear - First 5.5 km/h
Transmission Gear - Seventh 41.95 km/h
Transmission Gear - Fifth 22.7 km/h
Transmission Gear - Eighth 55.8 km/h
Transmission Gear - Fourth 16.9 km/h
Transmission Gear - Second 10 km/h
Transmission Gear - Sixth 30.6 km/h
Implement Cycle Times
Bail Lower 2.1 s
Ejector Extend 8.5 s
Apron Lower 3.8 s
Bowl Raise 3.5 s
Bowl Lower 3.5 s
Apron Raise 4 s
Bail Raise 1.5 s
Ejector Retract 8.5 s
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Informatiile marcate cu un asterisc sunt obligatorii pentru gestionarea solicitărilor dumneavoastră.
În conformitate cu Reglementările aplicabile privind protectia datelor cu caracter personal, aveti:
- un drept de acces (si) rectificare, stergere si portabilitate a datelor dumneavoastră cu caracter personal;
- un drept de limitare si opozitie din motive legitime fată de prelucrarea datelor dumneavoastră cu caracter personal;
De asemenea, aveti dreptul de a depune o plângere împotriva unei autorităti de supraveghere, precum Autoritatea Natională de Supraveghere a Prelucrării Datelor cu Caracter Personal din România în cazul unei încălcări a Reglementărilor aplicabile privind protectia datelor.
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