651

Scraper Capacity - Heaped
44 yd³ / 33.6 m³
Top Speed - Loaded
34.9 mile/h / 56.1 km/h
Rated Load
104058 lb / 47200 kg

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

Engine
Tractor Engine Cat C18
Tractor Engine
Flywheel Power - Tractor/Scraper 469kW (629 hp)
Net Power 469 kW/637 hp
Gross Power (SAE J1995) 637 HP / 475 kW
Net Power (ISO 14396) 585 HP / 436 kW
Bore 5.7 in / 145 mm
Stroke 7.2 in / 183 mm
Displacement 1105 in³ / 18.1 l
Net Power (SAE J1349/ISO 9249) 592 HP / 436 kW
Scraper Bowl
Scraper Capacity - Heaped 44 yd³ / 33.6 m³
Rated Load 104058 lb / 47200 kg
Capacity - Struck 32 yd³ / 24.5 m³
Depth of Cut - Maximum 17.3 in / 417 mm
Width - Cut - To Router Bits 12.5 ft / 3.8 m
Ground Clearance - Maximum 2.3 ft / 0.7 m
Hyd. Penetration Force - 657G 121000 lb / 542 kN
Depth of Spread - Maximum 26 in / 530 mm
Apron Opening 92 in / 2337 mm
Apron Closure Force 39200 lb / 176 kN
Transmission
Top Speed - Loaded 34.9 mile/h / 56.1 km/h
1 Forward 3.5 mile/h / 5.7 km/h
2 Forward 6.5 mile/h / 10.5 km/h
3 Forward 7.8 mile/h / 12.5 km/h
4 Forward 10.6 mile/h / 17 km/h
5 Forward 14.2 mile/h / 22.8 km/h
6 Forward 19.2 mile/h / 30.9 km/h
7 Forward 25.7 mile/h / 41.4 km/h
8 Forward 34.9 mile/h / 56.1 km/h
Reverse 6.7 mile/h / 10.8 km/h
Hydraulics
Bowl Cylinder Bore 7.08 in / 180 mm
Bowl Cylinder Stroke 37.4 in / 950 mm
Apron Cylinder Bore 7.08 in / 180 mm
Apron Cylinder Stroke 29.92 in / 759.5 mm
Steering Circuit (@ High Idle) 76.08 gal/min / 288 l/min
Cushion Hitch Circuit 19.54 gal/min / 74 l/min
Secondary Steering Circuit 14.52 gal/hr / 55 l/hr
Relief Valve - Steering Circuit 1959 psi / 13500 kPa
Relief Valve - Implement Circuit 1999 psi / 13780 kPa
Compensator Settings - Cushion Hitch Circuit 3002 psi / 20700 kPa
Steering
Width - 180° Turn - Right 44.6 ft / 13.6 m
Width - 180° Turn - Left 47.57 ft / 14.5 m
Steering Angle - Right 90
Steering Angle - Left 85
Service Refill Capacities - Tractor
Crankcase 13.7 gal (US) / 38 l
Transmission 35.9 gal (US) / 136 l
Differential 36 gal (US) / 136 l
Final Drive - Each 6 gal (US) / 29.5 l
Cooling System 23.4 gal (US) / 88.6 l
Hydraulic Reservoir 39.6 gal (US) / 150 l
Windshield Washer 0.5 gal (US) / 5 l
Dimensions
Width - Overall Machine 14.3 ft / 4.36 m
Width - Tractor 12.3 ft / 3.75 m
Width - Rear Tire Center Lines 9.21 ft / 2.81 m
Width - Inside of Bowl 12.07 ft / 3.68 m
Width - Outside Bowl - Shipping Width 12.98 ft / 3.93 m
Height - Overall Shipping 15.29 ft / 4.66 m
Height - Top of Cab 12.86 ft / 3.92 m
Ground Clearance - Tractor 2.3 ft / 0.7 m
Front of Tractor to Front Axle 14.93 ft / 4.55 m
Axle to Vertical Hitch Pin 1.8 ft / 0.55 m
Height - Scraper Blade Maximum 2.17 ft / 0.66 m
Wheel Base 32.68 ft / 9.96 m
Length - Overall Machine 58.96 ft / 17.97 m
Rear Axle - Rear of Machine 8.07 ft / 2.46 m
Weights - Push-Pull
Total Shipping 160505 lb / 72804 kg
Tractor Shipping 93635 lb / 42472 kg
Scraper Shipping 64068 lb / 29061 kg
Total Operating - Empty 164244 lb / 74500 kg
Front Axle 93842 lb / 42566 kg
Rear Axle 66663 lb / 30238 kg
Total Operating - Loaded 268302 lb / 121700 kg
Front Axle - Loaded 134165 lb / 60856 kg
Rear Axle - Loaded 130340 lb / 59121 kg
Service Refill Capacities - Scraper
Fuel Tank 430 gal (US) / 1628 l
Differential 44 gal (US) / 168 l
Final Drive - Each 7.8 gal (US) / 30 l
Transmission 31.9 gal (US) / 121 l
Crankcase 8.9 gal (US) / 34 l
Cooling System 16.6 gal (US) / 63.2 l

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
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