657 Coal Bowl

657 Wheel Tractor-Scraper

657

DESCRIPTION

Caterpillar offers Wheel Tractor-Scrapers designed exclusively for your coal stockpiling and retrieval needs. The Caterpillar® 657 Coal Bowl Scrapers can construct and maintain your coal stockpiles, as well as haul loads to your inlet supply system to meet the burn requirements of the plant.

Purpose-Built Coal Bowl

• Large capacity coal bowl scrapers are longer and higher than
standard open bowl scrapers.
• Purpose-built coal bowl dual engine scrapers deliver faster cycle
times with maximum payloads.
• High ground speed provides the ability to manage stockpiles.
• Machine is designed for loading, hauling, and compaction for
complete functionality.
• Work effectively in poor underfoot conditions and climb slippery
piles and loose coal with all-wheel drive (AWD).
• Coal bowl scrapers provide effective coal compaction, which
reduces the risk of spontaneous combustion in coal stockpiles by
eliminating the air spaces.
• Specialty coal bowl scrapers are optimized for maximum machine
productivity and efficiency.

Be More Productive

        
  • The Advanced Productivity Electronic Control System (APECS)
        enables communication between the engine and transmission to
        effectively optimize power and torque output. This integration
        results in enhanced efficiency with a net result is moving more
        material.
    •     
  • Use Ground Speed Control to set the desired top speed and the machine will find the gear that works best for the engine and the transmission, providing a lower fuel burn.
    •     
  • The machine speed limit feature allows the machine to maintain a
        set top speed instead of relying on top gear selector.
    •     
  • Auto-Stall assists in quickly bringing the transmission to an
        operating temperature at start-up when the machine is working in a cold climate region.








Easy to Operate

        
  • 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.
    •     
  • The spacious cab features easy, intuitive controls and excellent visibility. The cab provides a comfortable working environment for all-day operation.




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 job site
    .
    •     


  • Product Link™collects machine data that can be viewed online through web and mobile applications.

Execute Efficiency

        
  • The Cat C18 tractor and C15 scraper engines meet U.S. EPA Tier 4 Final or EU Stage V emission standards, contributing to lower fuel consumption.
    •     
  • The tractor hydraulic demand fan helps lower fuel consumption.
    •     
  • Monitor, manage, and enhance jobsite operations.

Features

  • 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
       with a 21% larger cab than the 657 G-Series cabs.
      •     






    • Intuitive, ergonomic controls with a multifunction display keep operators
       focused on their work.
      •     








    • Maintain desired cab temperature with automatic temperature control
      .

  • Designed for Safety

          
    • The powered access ladder, included as a standard feature, enables easier entry and exit from the cab.
      •     
    • Enhance the operator’s awareness of the site surroundings with the
          Work Area Vision System (WAVS).Convenient ground-level access to fuel fill and multiple
          maintenance points, ensuring safer and more efficient service.
      •     
    • Seat belt indicator provides visual and audible alerts when the seat belt is not in use.
      •     
    • The fuel fill, fuel filter, engine oil filter,  engine oil change, and water drain are easily accessible at ground level.






  • Standard Equipment
  • Specs
  • Docs

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

Specs

Overview

Long Name:
657 Wheel Tractor-Scraper
Name:
657 Coal Bowl
Brand:
Status:
Current

Engine

Tractor Engine
Cat® C18
Scraper Engine
Cat® C15

Tractor Engine

Flywheel Power - Tractor/Scraper
469kW (629 hp) / 353 kW (473 hp)
Net Power
469 kW/637 hp
Gross Power (SAE J1995)
637 hp / 475 kW
Net Power (ISO 14396)
637 hp / 469 kW
Bore
5.7 in / 145 mm
Stroke
7.2 in / 183 mm
Displacement
1105 in³ / 18.1 l

Scraper Engine

Net Power
353 kW/447 hp
Gross Power (SAE J1995)
481 hp / 359 kW
Net Power (ISO 14396)
480 hp / 353 kW
Bore
5.4 in / 137.2 mm
Stroke
6.75 in / 171.5 mm
Displacement
928 in³ / 15.2 l

Scraper Bowl

Scraper Capacity - Heaped
73 yd³ / 55.8 m³
Rated Load
104058 lb / 49895 kg
Capacity - Struck
59 yd³ / 45.1 m³
Depth of Cut - Maximum
16.4 in / 417 mm
Width - Cut - To Router Bits
12.5 ft / 3.8 m
Ground Clearance - Maximum
2.3 ft / 0.7 m
Depth of Spread - Maximum
26 in / 660 mm
Apron Opening
92 in / 2337 mm
Apron Closure Force
39200 lb / 176 kN

Transmission

Top Speed - Loaded
33 mile/h / 56.1 km/h
1 Forward
3.5 mile/h / 5.7 km/h
2 Forward
6.5 mile/h / 10.5 km/h
3 Forward
7.8 mile/h / 12.5 km/h
4 Forward
10.6 mile/h / 17 km/h
5 Forward
14.2 mile/h / 22.8 km/h
6 Forward
19.2 mile/h / 30.9 km/h
7 Forward
25.7 mile/h / 41.4 km/h
8 Forward
34.9 mile/h / 56.1 km/h
Reverse
6.7 mile/h / 10.8 km/h

Hydraulics

Bowl Cylinder Bore
7.08 in / 180 mm
Bowl Cylinder Stroke
37.4 in / 950 mm
Apron Cylinder Bore
7.08 in / 180 mm
Apron Cylinder Stroke
29.92 in / 759.5 mm
Steering Circuit (@ High Idle)
76.08 gpm / 288 L/min
Cushion Hitch Circuit
19.54 gpm / 74 L/min
Secondary Steering Circuit
14.52 gal/hr / 55 l/hr
Relief Valve - Steering Circuit
1959 psi / 13500 kPa
Relief Valve - Implement Circuit
1999 psi / 13780 kPa
Compensator Settings - Cushion Hitch Circuit
3002 psi / 20700 kPa

Steering

Width - 180° Turn - Right
45.4 ft / 13.85 m
Width - 180° Turn - Left
47.57 ft / 14.5 m
Steering Angle - Right
90
Steering Angle - Left
85

Service Refill Capacities - Tractor

Crankcase
13.7 gal (US) / 52 l
Transmission
35.9 gal (US) / 136 l
Differential
36 gal (US) / 136 l
Cooling System
23.4 gal (US) / 88.6 l
Hydraulic Reservoir
39.6 gal (US) / 150 l
Windshield Washer
0.5 gal (US) / 5 l

Service Refill Capacities - Scraper

Fuel Tank - 657G
430 gal (US) / 1628 l
Crankcase
8.9 gal (US) / 34 l
Transmission
31.9 gal (US) / 121 l
Differential
44 gal (US) / 168 l
Cooling System
16.6 gal (US) / 63.2 l

Dimensions

Width - Overall Machine
14.3 ft / 4.36 m
Width - Tractor
12.3 ft / 3.62 m
Width - Rear Tire Center Lines
9.23 ft / 2.81 m
Width - Inside of Bowl
12.07 ft / 3.68 m
Width - Outside Bowl - Shipping Width
12.98 ft / 3.91 m
Height - Overall Shipping
15.27 ft / 4.66 m
Height - Top of Cab
12.86 ft / 3.92 m
Ground Clearance - Tractor
2.36 ft / 0.7 m
Front of Tractor to Front Axle
12.72 ft / 3.88 m
Axle to Vertical Hitch Pin
1.8 ft / 0.55 m
Height - Scraper Blade Maximum
2.17 ft / 0.66 m
Wheel Base
32.68 ft / 11.01 m
Length - Overall Machine
58.96 ft / 17.35 m
Rear Axle - Rear of Machine
8.07 ft / 2.46 m

Weights - Push-Pull

Total Shipping
160505 lb / 72804 kg
Tractor Shipping
93635 lb / 42472 kg
Scraper Shipping
64068 lb / 29061 kg
Total Operating - Empty
164244 lb / 74500 kg
Front Axle
93842 lb / 42566 kg
Rear Axle
66663 lb / 30238 kg
Total Operating - Loaded
268302 lb / 121700 kg
Front Axle - Loaded
134165 lb / 60856 kg
Rear Axle - Loaded
130340 lb / 59121 kg

Scraper Bowl

Hyd. Penetration Force - 657G
121000 lb / 542 kN

Service Refill Capacities - Scraper

Final Drive - Each
7.8 gal (US) / 30 l

Scraper Engine

Net Power (SAE J1349/ISO 9249)
452 hp / 333 kW

Service Refill Capacities - Tractor

Final Drive - Each
6 gal (US) / 29.5 l

Tractor Engine

Net Power (SAE J1349/ISO 9249)
592 hp / 436 kW