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.
| Tractor Engine | Cat C18 |
| Flywheel Power – Tractor/Scraper | 469kW (629 hp) / 353 kW (473 hp) |
| Scraper Engine | Cat C15 |
| Tractor Engine | Cat C18 |
| Scraper Engine | Cat C15 |
| Flywheel Power – Tractor/Scraper | 469kW (629 hp) / 353 kW (473 hp) |
| Net Power | 469 kW/637 hp |
| Gross Power (SAE J1995) | 637 hp |
| Net Power (ISO 14396) | 637 hp |
| Net Power (SAE J1349/ISO 9249) | 592 hp |
| Bore | 5.7 in |
| Stroke | 7.2 in |
| Displacement | 1105 in³ |
| Scraper Capacity – Heaped | 44 yd³ |
| Rated Load | 104058 lb |
| Capacity – Struck | 32 yd³ |
| Depth of Cut – Maximum | 16.4 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 | 33 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 |
| Net Power | 353 kW/447 hp |
| Gross Power (SAE J1995) | 481 hp |
| Net Power (ISO 14396) | 480 hp |
| Net Power (SAE J1349/ISO 9249) | 452 hp |
| Bore | 5.4 in |
| Stroke | 6.75 in |
| Displacement | 928 in³ |
| 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 |
| 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 |
| Width – 180° Turn – Right | 45.4 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) |
| 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 gpm |
| Cushion Hitch Circuit | 19.54 gpm |
| 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 |
| Fuel Tank – 657G | 430 gal (US) |
| Crankcase | 8.9 gal (US) |
| Transmission | 31.9 gal (US) |
| Differential | 44 gal (US) |
| Final Drive – Each | 7.8 gal (US) |
| Cooling System | 16.6 gal (US) |
| Standard and optional equipment may vary. Consult your Cat dealer for details. |
| 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 |
| 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 |
| Tractor |
| Scraper |
| Tractor |
| Scraper |
