651 Wheel Tractor-Scraper

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

Key Features

More Comfort. More Performance. More Versatility.

Enhanced Operator Comfort

Ergonomic controls and a newly redesigned cab interior provide a more comfortable and efficient working environment all day long

Up To 6% Higher Productivity

Improvements in fuel efficiency, utilizing payload estimator, and the new transmission controls deliver increased productivity

Unparalleled Safety

Safety features help increase operator confidence by providing a safer environment for operations - effective wet disc brakes, WAVS camera, and powered access cab entry

Up To 15% Less CO2 Emissions

The 651 emits up to 15% less CO2 than the previous 651E.

Media Gallery

Specifications

Tractor Engine	Cat C18

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

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

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

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

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

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)

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

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