651 Wheel Tractor-Scraper
Open Bowl Scrapers
Details
Tractor Engine
Cat C18
Flywheel Power - Tractor/Scraper
469kW (629 hp)
Scraper Capacity - Heaped
44 yd³
Overview
High productivity / low cost solution
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
Benefits
Enhanced Operator Comfort
Ergonomic controls and a newly redesigned cab interior provide a more comfortable and efficient working environment all day long
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
Less CO2 Emissions
The 651 emits up to 15% less CO2 than the previous 651E.
Features at a Glance
- BE MORE PRODUCTIVE
-
BE MORE PRODUCTIVE
- Move more material with Advanced Productivity Electronic ControlSystem (APECS), which allows the machine to better utilize engine power and torque.
- Set the desired top speed with Ground Speed Control, and the machine will find the gear that works best for the engine and the transmission, providing a lower fuel burn in speed reduced areas.
- The Machine Speed Limit feature replaces Top Gear Selection.
- Auto-Stall assists in quickly bringing the transmission to an operating temperature at start-up when working in colder climates.
- Cat Payload Estimator for scrapers achieves on-the-go weighing to deliver optimal payload and jobsite efficiency.
- WORK IN COMFORT
-
WORK IN COMFORT
- Steer with less effort with the newly designed high-pressure steering system.
- Reduce up to 14 individual operator commands per cycle with
Sequence Assist (optional attachment). - Enjoy interior improvements and a more ergonomic work
environment. - Intuitive, ergonomic controls with multifunction display keep
operators focused on their work. - Maintain desired cab temperature with automatic temperature
control.
- DESIGNED FOR SAFETY
-
DESIGNED FOR SAFETY
- Get in and out of the cab easier with the new powered access
ladder system. - Enhance the operator’s awareness of site surroundings with the
optional Work Area Vision System (WAVS). - Ground-level access to fuel fill and several maintenance points for
easier and safer service. - Seat belt indicator provides visual and audible alerts when the seat
belt is not in use.Wide brake shoes and brake drums improve brake performance and reduce brake and drum wear - Separate front and rear circuits. Secondary brakes engage automatically if service pressure drops
- Parking Brake features a spring-applied, hydraulic pressure released mechanism that operates the service brakes
- Get in and out of the cab easier with the new powered access
- EASY TO OPERATE
-
EASY TO OPERATE
- Cat Advanced Ride Management (ARM) seat suspension reduces end stroke movement of the load cylinder for a smoother ride.
- Engine overspeed protection will automatically engage with no operator input when the machine is in eighth gear. The machine will assist in slowing the machine speed by canceling the throttle command and engaging the engine compression brake.
- INTEGRATED CAT TECHNOLOGIES
-
INTEGRATED CAT TECHNOLOGIES
- Access information anytime, anywhere with Vision Link®– use it to make informed decisions that boost productivity, lower costs, simplify maintenance, and improve safety and security on your jobsite.
- Product Link™
collects machine data that can be viewed online
through web and mobile applications (optional attachment).
Specifications
Full Specifications
- Engine
-
Tractor Engine
Cat C18
- Tractor Engine
-
Flywheel Power - Tractor/Scraper
469kW (629 hp)Net Power
469 kW/637 hpGross Power (SAE J1995)
637 HPNet Power (ISO 14396)
585 HPBore
5.7 inStroke
7.2 inDisplacement
1105 in³Net Power (SAE J1349/ISO 9249)
592 HP
- Scraper Bowl
-
Scraper Capacity - Heaped
44 yd³Rated Load
104,058 lbCapacity - Struck
32 yd³Depth of Cut - Maximum
17.3 inWidth - Cut - To Router Bits
12.5 ftGround Clearance - Maximum
2.3 ftHyd. Penetration Force - 657G
121000 lbDepth of Spread - Maximum
26 inApron Opening
92 inApron Closure Force
39200 lb
- Transmission
-
Top Speed - Loaded
34.9 mile/h1 Forward
3.5 mile/h2 Forward
6.5 mile/h3 Forward
7.8 mile/h4 Forward
10.6 mile/h5 Forward
14.2 mile/h6 Forward
19.2 mile/h7 Forward
25.7 mile/h8 Forward
34.9 mile/hReverse
6.7 mile/h
- Hydraulics
-
Bowl Cylinder Bore
7.08 inBowl Cylinder Stroke
37.4 inApron Cylinder Bore
7.08 inApron Cylinder Stroke
29.92 inSteering Circuit (@ High Idle)
76.08 gal/minCushion Hitch Circuit
19.54 gal/minSecondary Steering Circuit
14.52 gal/hrRelief Valve - Steering Circuit
1959 psiRelief Valve - Implement Circuit
1999 psiCompensator Settings - Cushion Hitch Circuit
3002 psi
- Steering
-
Width - 180° Turn - Right
44.6 ftWidth - 180° Turn - Left
47.57 ftSteering Angle - Right
90Steering 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)
- Dimensions
-
Width - Overall Machine
14.3 ftWidth - Tractor
12.3 ftWidth - Rear Tire Center Lines
9.21 ftWidth - Inside of Bowl
12.07 ftWidth - Outside Bowl - Shipping Width
12.98 ftHeight - Overall Shipping
15.29 ftHeight - Top of Cab
12.86 ftGround Clearance - Tractor
2.3 ftFront of Tractor to Front Axle
14.93 ftAxle to Vertical Hitch Pin
1.8 ftHeight - Scraper Blade Maximum
2.17 ftWheel Base
32.68 ftLength - Overall Machine
58.96 ftRear Axle - Rear of Machine
8.07 ft
- Weights - Push-Pull
-
Total Shipping
160505 lbTractor Shipping
93635 lbScraper Shipping
64068 lbTotal Operating - Empty
164,244. lbFront Axle
93842 lbRear Axle
66663 lbTotal Operating - Loaded
268,302. lbFront Axle - Loaded
134165 lbRear Axle - Loaded
130340 lb
- Service Refill Capacities - Scraper
-
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)
Equipment
- 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