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
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 |
145 mm |
Stroke |
183 mm |
Displacement |
18.1 l |
Net Power (SAE J1349/ISO 9249) |
592 hp |
Scraper Bowl
Scraper Capacity - Heaped |
33.6 m³ |
Rated Load |
47200 kg |
Capacity - Struck |
24.5 m³ |
Depth of Cut - Maximum |
417 mm |
Width - Cut - To Router Bits |
3.8 m |
Ground Clearance - Maximum |
0.7 m |
Hyd. Penetration Force - 657G |
542 kN |
Depth of Spread - Maximum |
530 mm |
Apron Opening |
2337 mm |
Apron Closure Force |
176 kN |
Transmission
Top Speed - Loaded |
56.1 km/h |
1 Forward |
5.7 km/h |
2 Forward |
10.5 km/h |
3 Forward |
12.5 km/h |
4 Forward |
17 km/h |
5 Forward |
22.8 km/h |
6 Forward |
30.9 km/h |
7 Forward |
41.4 km/h |
8 Forward |
56.1 km/h |
Reverse |
10.8 km/h |
Hydraulics
Bowl Cylinder Bore |
180 mm |
Bowl Cylinder Stroke |
950 mm |
Apron Cylinder Bore |
180 mm |
Apron Cylinder Stroke |
759.5 mm |
Steering Circuit (@ High Idle) |
288 l/min |
Cushion Hitch Circuit |
74 l/min |
Secondary Steering Circuit |
55 l/hr |
Relief Valve - Steering Circuit |
13500 kPa |
Relief Valve - Implement Circuit |
13780 kPa |
Compensator Settings - Cushion Hitch Circuit |
20700 kPa |
Steering
Width - 180° Turn - Right |
13.6 m |
Width - 180° Turn - Left |
14.5 m |
Steering Angle - Right |
90 |
Steering Angle - Left |
85 |
Service Refill Capacities - Tractor
Crankcase |
38 l |
Transmission |
136 l |
Differential |
136 l |
Final Drive - Each |
29.5 l |
Cooling System |
88.6 l |
Hydraulic Reservoir |
150 l |
Windshield Washer |
5 l |
Dimensions
Width - Overall Machine |
4.36 m |
Width - Tractor |
3.75 m |
Width - Rear Tire Center Lines |
2.81 m |
Width - Inside of Bowl |
3.68 m |
Width - Outside Bowl - Shipping Width |
3.93 m |
Height - Overall Shipping |
4.66 m |
Height - Top of Cab |
3.92 m |
Ground Clearance - Tractor |
0.7 m |
Front of Tractor to Front Axle |
4.55 m |
Axle to Vertical Hitch Pin |
0.55 m |
Height - Scraper Blade Maximum |
0.66 m |
Wheel Base |
9.96 m |
Length - Overall Machine |
17.97 m |
Rear Axle - Rear of Machine |
2.46 m |
Weights - Push-Pull
Total Shipping |
72804 kg |
Tractor Shipping |
42472 kg |
Scraper Shipping |
29061 kg |
Total Operating - Empty |
74500 kg |
Front Axle |
42566 kg |
Rear Axle |
30238 kg |
Total Operating - Loaded |
121700 kg |
Front Axle - Loaded |
60856 kg |
Rear Axle - Loaded |
59121 kg |
Service Refill Capacities - Scraper
Fuel Tank |
1628 l |
Differential |
168 l |
Final Drive - Each |
30 l |
Transmission |
121 l |
Crankcase |
34 l |
Cooling System |
63.2 l |