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Wheel tractor scrapers 637K (tier 4)
Request a QuoteKey Information
Flywheel Power: Tractor/Scraper
425 kW / 216 kW
Scraper capacity: struck
38 m³
Maximum speed, loaded
55.8 km/h
Overview
High performance
Cat’s 637 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.
Benefits
Increased Comfort
Ergonomic controls and a newly redesigned cab interior provide a more comfortable and efficient working environment all day long
Up To 12% More Productivity
Improvements in fuel efficiency and the new APECS transmission controls deliver more productivity in most applications
Additional Safety
New safety features help operators be more productive and work more efficiently all day long
Key Features
- Large Capacity Coal Scraper Bins
- The Measure
- Easy Maintenance of the Tractor
- Brakes
- Reduction of Tire Skidding
Large Capacity Coal Scraper Bins

The coal bins are longer and taller than standard scraper bins, allowing the self-propelled scraper to move 38 m3 (50 yd3) of low-density bulk coal. The bins have been designed and built to transport bulk coal to the pile and reserve coal from the pile to the feeding system.
The Measure

Coal scraper loaders effectively compact the coal, reducing the risk of spontaneous combustion of coal piles by eliminating air pockets.
Easy Maintenance of the Tractor

The fuel, water, and engine oil have been moved to ground level on the right side of the machine for easy access.
Brakes

The segment brake and pneumatic control drum have been replaced by a hydraulic control tractor oil bath disc brake and a scraper dry caliper.
Reduction of Tire Skidding

This function allows the machine to limit the tire slippage of the tractor only. When the reduction of tire slippage is selected, the machine controls the tire slippage on the tractor by maintaining the slip within the optimal range for loading and adjusting the engine speed without any further intervention from the driver.
Contact Our Experts
Morocco
International
Monday to Friday 8am-5:30pm (UTC)
Product Specifications for 637K (tier 4)
- ENGINE
- Tractor/Scraper Gross Power425 kW (570 HP)/216 kW (290 HP)
- OPERATING CHARACTERISTICS
- Scraper Capacity: Heaped38 m³
- Maximum Speed, Loaded55.8 km/h
- SAFETY STANDARD COMPLIANCE
- BrakesISO 3450:2011
- Steering SystemISO 5010:2007
- Seat BeltSAE J386:FEB2006
- Falling Object Guard FrameISO 3449:2005 Level II
- Reverse AlarmISO 9533:2010
- Roll-Over Protective Structure (ROPS)ISO 3471:2008 up to 21,282 kg (46,919 lb)
- GENERAL
- Turning Diameter, Edge to Edge, 180°12.98 m
- Tractor Gross Power425 kW
- Tractor Tires37.25R35**E3
- Overall Width3.94 m
- Engine Rated Speed (RPM): Scraper2150 RPM
- Engine Rated Speed (RPM): Tractor1900 RPM
- Operating Weight: Empty52,425 kg
- Scraper Capacity: Heaped38 m³
- Cutting Width3.51 m
- Maximum Speed, Loaded55.8 km/h
- Overall Length15,480 mm
- Scraper Fuel Tank Capacity1400 l
- Scraper Capacity: Struck31 m³
- Overall Shipping Height4.15 m
- Maximum Cut Depth450 mm
- EmissionsCat C9.3 ACERT and Cat C18 ACERT engines are compliant with U.S. EPA Tier 4 Final and EU Stage IV emission standards.
- Maximum Spread Depth535 mm
- Scraper Gross Power216 kW
- Rated Load34,472 kg (76,000 lb)/34.20 tonnes (38 US tons)
- Scraper Engine ModelCat C9.3 ACERT
- Tractor Engine ModelCat C18 ACERT™
- Scraper Tires37.25R35**E3
- CAPACITIES
- Cooling System: Scraper61 l
- Diesel Exhaust Fluid: Scraper22 l
- Transmission System: Tractor110 l
- Transmission Case: Tractor52 l
- Diesel Exhaust Fluid: Tractor30.5 l
- Transmission System: Scraper49 l
- Cooling System: Tractor75 l
- Transmission Case: Scraper24.5 l
- TRAVEL SPEEDS: TRUE GROUND SPEED
- Eighth Gear Ratio55.8 km/h
- First Gear Ratio5.5 km/h
- Fourth Gear Ratio16.9 km/h
- Reverse Gear Ratio9.9 km/h
- Third Gear Ratio12.4 km/h
- Seventh Gear Ratio41.95 km/h
- Fifth Gear Ratio22.7 km/h
- Sixth Gear Ratio30.6 km/h
- Second Gear Ratio10 km/h
- EQUIPMENT CYCLE TIMES
- Raise Hitch1.5 s
- Dump Lower3.5 s
- Drop Bowl3.8 s
- Apron Retract8.5 s
- Lower Hitch2.1 s
- Raise Bowl4 s
- Apron Deploy8.5 s
- Lower Bowl3.5 s
- DIMENSIONS
- Machine Overall Width3937 mm
- Tractor Width3499 mm
- Tractor Ground Clearance664 mm
- From Axle to Pivot Vertical Center509 mm
- Cab Height3733 mm
- Outside Rear Tire Width3636 mm
- Maximum Scraper Cutting Edge Height538 mm
- Rear Axle: Rear of Machine2424 mm
- Rear Tire Axle Width2462 mm
- From Front of Tractor to Front Axle3612 mm
- Inside Bowl Width3404 mm
- Machine Overall Length: Standard15480 mm
- Overall Shipping Height4140 mm
- Wheelbase9576 mm
- SERVICE REFILL CAPACITIES
- Fuel Tank1400 l
- CAB
- ROPS/FOPS FrameConforms to ISO Standards
- External Sound Power LevelMachine standard external sound power level (ISO 6393:2008) is 118 dB(A).
- MAINTENANCE CAPACITIES
- Hydraulic Circuit142 l
Standard Equipment for 637K (tier 4)
-
POWERTRAIN - TRACTOR
- C18 ACERT Cat Engine with MEUI™
- Compression Brake
- Electric Starting, 24 V
- Dry-Type Air Filter with Prefilter
- Hydraulic Fan
- Ground-Level Engine Shutdown
- Radiator, Aluminum Cooling Bundle, 9 Fins per Inch
- Undercarriage Guard
- Ether Starting Aid
- Brake System:
- Primary and Secondary, Wet Disc, Hydraulic Actuation
- Park Brake, Spring-Applied, Hydraulic Release
- Throttle Lock
- Transmission:
- 8-Speed Planetary Powershift Transmission
- ECPC (Electronic Clutch Pressure Control)
- APECS (Advanced Productivity Electronics Control Strategy)
- Programmable Top Gear Selection
- Gear Hold
- Diff Lock
- Powertrain Guard
- Standard Tire Slip Reduction
- Ground Speed Control
- Machine Speed Limit
- Diff Lock Protection
-
POWERTRAIN - SCRAPER
- C9.3 ACERT Cat Engine
- High-Pressure Common Rail Fuel System
- Constantly Variable Brake Retarder
- Electric Starting, 24 V
- Dry-Type Air Filter with Prefilter
- Mechanical Drive Fan
- Ground-Level Engine Shutdown
- Radiator, Aluminum Cooling Bundle, 9 Fins per Inch
- Ether Starting Aid
- Brake System:
- Primary and Secondary, Dry Caliper, Hydraulic Actuation
- Transmission:
- 4-Speed (Torque Converter Drive)
- Planetary Powershift Transmission
-
ELECTRICAL SYSTEM - TRACTOR
- 150 A Alternator
- Batteries (4), 12 V, 1,000 CCA (Cold Cranking Amps), Maintenance-Free, High Capacity
- 24 V Electrical System
- Lighting System:
- LED Headlights
- Directional Signals with Hazard Function, LED Work Lights (2), Blade (1), Bowl, Side Vision Halogen (2)
- Starting/Charging Receptacle
-
ELECTRICAL SYSTEM - SCRAPER
- Backup Alarm
- Batteries (4) 12 V, 1,000 CCA, Maintenance-Free, High Capacity
- 65 A Alternator
- 24 V Electrical System
- Lighting System:
- LED Stop Lights
- Directional Signals with Hazard Function, LED Turn Signals
-
OPERATOR'S STATION - TRACTOR
- Heating/Ventilation/Air Conditioning, Defrost
- Heating/Ventilation/Air Conditioning Thermostat Control
- Clothes Hook
- Lunchbox Tray with Strap
- Diagnostic Ports (2)
- 12 V Power Outlets (2)
- Diff Lock Control (1)
- Interior Light
- Electric Horn
- T-Handle Equipment Control
- Interior Rearview Mirror
- Radio Readiness
- Pressurized ROPS/FOPS Cabin
- Keypad Switches:
- Throttle Lock
- Windshield Wipers/Washers
- Hazard Lights
- Ground Speed Selection
- Headlight On/Off
- Messenger Display Information Mode
- Safety Latch Toggle Switches
- Two-Part Static Seat Belt
- ARM (Cat Advanced Ride Management) Comfort Series 3 Seat, Swivels Up to 30°
- Tilt/Telescopic/Padded Steering Wheel
- Emergency Exit Windows, Right-Side
- Sliding Windows
- Laminated Sliding Windows
- Windshield Wipers, Front and Rear, with Washer
- Door Lock
- Messenger Display
- Indicators and Warnings Include:
- Coolant Temperature
- Engine Oil Temperature
- Hydraulic Oil Temperature
- Fuel Level
- Parking Brake
- Tool Lockout
- Brake System
- Throttle Lock
- Circuit Voltage
- Secondary Steering
- Lowered Bowl
- Auto Eject
- Diff Lock
- Bowl Free Position
- Gear Hold
- Hitch Dampener
- High Beam
- Main Indicator
- Engine Speed, rpm
- Gear Selection
-
FLUIDS
- Long-Life Coolant to -37°C (-34°F)
-
OTHER STANDARD EQUIPMENT - TRACTOR
- Advanced Hitch Damper
- Accumulators (Hitch Damper) with Canadian Registration Number (CRN)
- Quick Oil Change
- Non-Metallic Fenders
- Engine Coolant Heater (120 V)
- Wheels (2)
- Front Towing Hooks
- Antivandalism Locks
- Engine Coolant Heater (120 V)
- Steering Locks
-
OTHER STANDARD EQUIPMENT - SCRAPER
- Coal Bowl
- Struck Capacity: 31 m³ (41 yd³)
- Heaped Capacity: 38 m³ (50 yd³)
- Antivandalism Locks
- Scraper Fenders
- Quick Oil Change
- Wheels (2)
- Hydraulic Position Sensing Cylinders (Bowl Lift and Apron)
Available Options for 637K (tier 4)
-
STEERING OPTIONS
- Auxiliary Steering Version
-
INTEGRATED TECHNOLOGIES
- Sequential Aid Version
- Improved Tire Skid Reduction
-
OTHER EQUIPMENT
- Camera Version: WAVS
- Cabin Beacon Light
- Pneumatic Horn
- Pneumatic Horn and Beacon Light
- Wiring Kit
-
MAINTENANCE INSTRUCTIONS
- Film Version - United States (ANSI)
- Film Version: International (ISO)
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