US
Metric

Overview

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)
637.00 HP
475.00 kW
Net Power (ISO 14396)
585.00 HP
436.00 kW
Bore
5.70 in
145.00 mm
Stroke
7.20 in
183.00 mm
Displacement
1105.00 in³
18.10 l
Net Power (SAE J1349/ISO 9249)
592.00 HP
436.00 kW

Scraper Bowl

Scraper Capacity - Heaped
44.00 yd³
33.60 m³
Rated Load
104058.00 lb
47200.00 kg
Capacity - Struck
32.00 yd³
24.50 m³
Depth of Cut - Maximum
17.30 in
417.00 mm
Width - Cut - To Router Bits
12.50 ft
3.80 m
Ground Clearance - Maximum
2.30 ft
0.70 m
Hyd. Penetration Force - 657G
121000.00 lb
542.00 kN
Depth of Spread - Maximum
26.00 in
530.00 mm
Apron Opening
92.00 in
2337.00 mm
Apron Closure Force
39200.00 lb
176.00 kN

Transmission

Top Speed - Loaded
34.90 mile/h
56.10 km/h
1 Forward
3.50 mile/h
5.70 km/h
2 Forward
6.50 mile/h
10.50 km/h
3 Forward
7.80 mile/h
12.50 km/h
4 Forward
10.60 mile/h
17.00 km/h
5 Forward
14.20 mile/h
22.80 km/h
6 Forward
19.20 mile/h
30.90 km/h
7 Forward
25.70 mile/h
41.40 km/h
8 Forward
34.90 mile/h
56.10 km/h
Reverse
6.70 mile/h
10.80 km/h

Hydraulics

Bowl Cylinder Bore
7.08 in
180.00 mm
Bowl Cylinder Stroke
37.40 in
950.00 mm
Apron Cylinder Bore
7.08 in
180.00 mm
Apron Cylinder Stroke
29.92 in
759.50 mm
Steering Circuit (@ High Idle)
76.08 gal/min
288.00 l/min
Cushion Hitch Circuit
19.54 gal/min
74.00 l/min
Secondary Steering Circuit
14.52 gal/hr
55.00 l/hr
Relief Valve - Steering Circuit
1959.00 psi
13500.00 kPa
Relief Valve - Implement Circuit
1999.00 psi
13780.00 kPa
Compensator Settings - Cushion Hitch Circuit
3002.00 psi
20700.00 kPa

Steering

Width - 180° Turn - Right
44.60 ft
13.60 m
Width - 180° Turn - Left
47.57 ft
14.50 m
Steering Angle - Right
90
Steering Angle - Left
85

Service Refill Capacities - Tractor

Crankcase
13.70 gal (US)
38.00 l
Transmission
35.90 gal (US)
136.00 l
Differential
36.00 gal (US)
136.00 l
Final Drive - Each
6.00 gal (US)
29.50 l
Cooling System
23.40 gal (US)
88.60 l
Hydraulic Reservoir
39.60 gal (US)
150.00 l
Windshield Washer
0.50 gal (US)
5.00 l

Dimensions

Width - Overall Machine
14.30 ft
4.36 m
Width - Tractor
12.30 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
2.30 ft
0.70 m
Front of Tractor to Front Axle
14.93 ft
4.55 m
Axle to Vertical Hitch Pin
1.80 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
160505.00 lb
72804.00 kg
Tractor Shipping
93635.00 lb
42472.00 kg
Scraper Shipping
64068.00 lb
29061.00 kg
Total Operating - Empty
164244.00 lb
74500.00 kg
Front Axle
93842.00 lb
42566.00 kg
Rear Axle
66663.00 lb
30238.00 kg
Total Operating - Loaded
268302.00 lb
121700.00 kg
Front Axle - Loaded
134165.00 lb
60856.00 kg
Rear Axle - Loaded
130340.00 lb
59121.00 kg

Service Refill Capacities - Scraper

Fuel Tank
430.00 gal (US)
1628.00 l
Differential
44.00 gal (US)
168.00 l
Final Drive - Each
7.80 gal (US)
30.00 l
Transmission
31.90 gal (US)
121.00 l
Crankcase
8.90 gal (US)
34.00 l
Cooling System
16.60 gal (US)
63.20 l
Features

BE MORE PRODUCTIVE

WORK IN COMFORT

DESIGNED FOR SAFETY

EASY TO OPERATE

INTEGRATED CAT TECHNOLOGIES

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