651
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
Tractor Engine
Cat C18
Flywheel Power - Tractor/Scraper
469kW (629 hp)
Net Power
469 kW/637 hp
Specification
Value
Tractor Engine
Cat C18
Specification
Value
Flywheel Power - Tractor/Scraper
469kW (629 hp)
Net Power
469 kW/637 hp
Gross Power (SAE J1995)
637 HP
Net Power (ISO 14396)
585 HP
Bore
5.7 in
Stroke
7.2 in
Displacement
1105 in³
Net Power (SAE J1349/ISO 9249)
592 HP
Specification
Value
Scraper Capacity - Heaped
44 yd³
Rated Load
104,058 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
Specification
Value
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
Specification
Value
Bowl Cylinder Bore
7.08 in
Bowl Cylinder Stroke
37.4 in
Apron Cylinder Bore
7.08 in
Apron Cylinder Stroke
29.92 in
Steering Circuit (@ High Idle)
76.08 gal/min
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
Specification
Value
Width - 180° Turn - Right
44.6 ft
Width - 180° Turn - Left
47.57 ft
Steering Angle - Right
90
Steering Angle - Left
85
Specification
Value
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)
Specification
Value
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
Specification
Value
Total Shipping
160505 lb
Tractor Shipping
93635 lb
Scraper Shipping
64068 lb
Total Operating - Empty
164,244. lb
Front Axle
93842 lb
Rear Axle
66663 lb
Total Operating - Loaded
268,302. lb
Front Axle - Loaded
134165 lb
Rear Axle - Loaded
130340 lb
Specification
Value
Fuel Tank
430 gal (US)
Differential
44 gal (US)
Final Drive - Each
7.8 gal (US)
Transmission
31.9 gal (US)
Crankcase
8.9 gal (US)
Cooling System
16.6 gal (US)
