Get a Quote

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

Cat Specs
Photos
Downloads

Engine

Tractor Engine
Cat C18

Tractor Engine

Flywheel Power - Tractor/Scraper
469kW (629 hp)
Net Power
469 kW/637 hp
Bore
5.7 in
Stroke
7.2 in
Displacement
1105 in³

Scraper Bowl

Scraper Capacity - Heaped
44 yd³
Rated Load
104058 lb
Capacity - Struck
32 yd³
Depth of Cut - Maximum
17.3 in
Width - Cut - To Router Bits
12.5 ft
Ground Clearance - Maximum
2.3 ft
Hyd. Penetration Force - 657G
121000 lb
Depth of Spread - Maximum
26 in
Apron Opening
92 in
Apron Closure Force
39200 lb

Transmission

Top Speed - Loaded
34.9 mile/h
1 Forward
3.5 mile/h
2 Forward
6.5 mile/h
3 Forward
7.8 mile/h
4 Forward
10.6 mile/h
5 Forward
14.2 mile/h
6 Forward
19.2 mile/h
7 Forward
25.7 mile/h
8 Forward
34.9 mile/h
Reverse
6.7 mile/h

Weights - Push-Pull

Total Shipping
160505 lb
Tractor Shipping
93635 lb
Scraper Shipping
64068 lb
Total Operating - Empty
164244 lb
Front Axle
93842 lb
Rear Axle
66663 lb
Total Operating - Loaded
268302 lb
Front Axle - Loaded
134165 lb
Rear Axle - Loaded
130340 lb

Dimensions

Width - Overall Machine
14.3 ft
Width - Tractor
12.3 ft
Width - Rear Tire Center Lines
9.21 ft
Width - Inside of Bowl
12.07 ft
Width - Outside Bowl - Shipping Width
12.98 ft
Height - Overall Shipping
15.29 ft
Height - Top of Cab
12.86 ft
Ground Clearance - Tractor
2.3 ft
Front of Tractor to Front Axle
14.93 ft
Axle to Vertical Hitch Pin
1.8 ft
Height - Scraper Blade Maximum
2.17 ft
Wheel Base
32.68 ft
Length - Overall Machine
58.96 ft
Rear Axle - Rear of Machine
8.07 ft

Shipping

UPC
76.08

Steering

Width - 180° Turn - Right
44.6 ft
Width - 180° Turn - Left
47.57 ft
Steering Angle - Right
90
Steering Angle - Left
85

Service Refill Capacities - Tractor

Crankcase
13.7 gal (US)
Transmission
35.9 gal (US)
Differential
36 gal (US)
Final Drive - Each
6 gal (US)
Cooling System
23.4 gal (US)
Hydraulic Reservoir
39.6 gal (US)
Windshield Washer
0.5 gal (US)

Hydraulics

Bowl Cylinder Bore
7.08 in
Bowl Cylinder Stroke
37.4 in
Apron Cylinder Bore
7.08 in
Apron Cylinder Stroke
29.92 in
Cushion Hitch Circuit
19.54 gal/min
Secondary Steering Circuit
14.52 gal/hr
Relief Valve - Steering Circuit
1959 psi
Relief Valve - Implement Circuit
1999 psi
Compensator Settings - Cushion Hitch Circuit
3002 psi

Service Refill Capacities - Scraper

Differential
44 gal (US)
Crankcase
8.9 gal (US)
Final Drive - Each
7.8 gal (US)
Cooling System
16.6 gal (US)
Fuel Tank
430 gal (US)
Transmission
31.9 gal (US)