651 Wheel Tractor-Scraper

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Caterpillar is excited to announce the 651 comeback into our Wheel Tractor-Scraper lineup in 2022. Delivering high levels of productivity, the 651 single engine earthmoving system is a wise choice on numerous large-scale projects by providing fast cycle times when working in lower grades and rolling resistance applications. First introduced into the Cat® Wheel Tractor-Scraper lineup in 1962, the 651 continues to uphold its legacy as one of our signaturemachines. Its single engine power gives the ability to work with a Cat D10 or D11 push dozer delivering ultra-fast load times and the ability to work in abrasive or rocky conditions. Improvements in productivity, combined with enhancements in operator comfort, and new safety features – Powered Access System and effective wet disc brakes – for a machine offering high returns on profit and time

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Tractor Engine Cat C18
Bore 5.7in
Displacement 1105in³
Flywheel Power - Tractor/Scraper 469kW (629 hp)
Gross Power (SAE J1995) 637HP
Net Power 469 kW/637 hp
Net Power (ISO 14396) 585HP
Net Power (SAE J1349/ISO 9249) 592HP
Stroke 7.2in
Apron Closure Force 39200lb
Apron Opening 92in
Capacity - Struck 32yd³
Depth of Cut - Maximum 17.3in
Depth of Spread - Maximum 26in
Ground Clearance - Maximum 2.3ft
Hyd. Penetration Force - 657G 121000lb
Rated Load 104058lb
Scraper Capacity - Heaped 44yd³
Width - Cut - To Router Bits 12.5ft
1 Forward 3.5mile/h
2 Forward 6.5mile/h
3 Forward 7.8mile/h
4 Forward 10.6mile/h
5 Forward 14.2mile/h
6 Forward 19.2mile/h
7 Forward 25.7mile/h
8 Forward 34.9mile/h
Reverse 6.7mile/h
Top Speed - Loaded 34.9mile/h
Front Axle 93842lb
Front Axle - Loaded 134165lb
Rear Axle 66663lb
Rear Axle - Loaded 130340lb
Scraper Shipping 64068lb
Total Operating - Empty 164244lb
Total Operating - Loaded 268302lb
Total Shipping 160505lb
Tractor Shipping 93635lb
Axle to Vertical Hitch Pin 1.8ft
Front of Tractor to Front Axle 14.93ft
Ground Clearance - Tractor 2.3ft
Height - Overall Shipping 15.29ft
Height - Scraper Blade Maximum 2.17ft
Height - Top of Cab 12.86ft
Length - Overall Machine 58.96ft
Rear Axle - Rear of Machine 8.07ft
Wheel Base 32.68ft
Width - Inside of Bowl 12.07ft
Width - Outside Bowl - Shipping Width 12.98ft
Width - Overall Machine 14.3ft
Width - Rear Tire Center Lines 9.21ft
Width - Tractor 12.3ft
Steering Angle - Left 85
Steering Angle - Right 90
Width - 180° Turn - Left 47.57ft
Width - 180° Turn - Right 44.6ft
Cooling System 23.4gal (US)
Crankcase 13.7gal (US)
Differential 36gal (US)
Final Drive - Each 6gal (US)
Hydraulic Reservoir 39.6gal (US)
Transmission 35.9gal (US)
Windshield Washer 0.5gal (US)
Apron Cylinder Bore 7.08in
Apron Cylinder Stroke 29.92in
Bowl Cylinder Bore 7.08in
Bowl Cylinder Stroke 37.4in
Compensator Settings - Cushion Hitch Circuit 3002psi
Cushion Hitch Circuit 19.54gal/min
Relief Valve - Implement Circuit 1999psi
Relief Valve - Steering Circuit 1959psi
Secondary Steering Circuit 14.52gal/hr
Steering Circuit (@ High Idle) 76.08gal/min
Cooling System 16.6gal (US)
Crankcase 8.9gal (US)
Differential 44gal (US)
Final Drive - Each 7.8gal (US)
Fuel Tank 430gal (US)
Transmission 31.9gal (US)

Standard Equipment:

  • Note
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • Electrical
    • Alarm, backup
    • Alternator, 115 amp - tractor engine
    • Alternator, 65 amp - scraper engine
    • Batteries Tractor (4), 12V Maintenance Free, High Output
    • Batteries Scraper (4), 12V Maintenance Free, High Output
    • Electrical System, 24V
    • Lighting System - Tractor
    • Lighting System - Scraper
    • Starting Receptacle - tractor and scraper engines
  • Operator Environment
    • Air Conditioner (includes heater and defroster)
    • Automotive style fuse panel with fuse puller
    • Lunch box platform with holding strap
    • Coat Hook
    • Cup holder
    • Diagnostic Connection Port (12V)
    • Dome Courtesy Light
    • Engine speed lock
    • Fan defroster
    • Gauge Group
    • Horn
    • Implement Control Joystick
    • Rearview Mirrors
    • Radio Ready
    • 2 radio openings, speakers, and 5-amp converter
    • ROPS Cab with Sound Suppression and Pressurization
    • Static Seatbelt, 2 piece
    • Scraper Engine Controls
    • Seat, Air Suspension, Cat Advanced Ride Management
    • Steering Wheel - tilt and telescoping
    • Storage Compartment
    • Transmission Hold
    • Windows - sliding side
    • Windshield - laminated glass
    • Windshield Wiper/Washer - front and rear
    • Wrist Rest/Grab Handle
  • Power Train
    • Tractor
    • Scraper
  • Other Standard Equipment
    • Tractor
    • Scraper

Optional Equipment: