Coal reserve management Only Caterpillar offers Wheel Tractor-Scrapers designed exclusively for your coal stockpiling and retrieval needs. The Cat® 637G Coal Bowl Scraper 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.
| Flywheel Power - Tractor/Scraper | 373 kw (500 hp) / 211 kW (283 hp) |
| Flywheel Power - Tractor | 345 / 373 kW (462 / 500 hp) |
| Flywheel Power - Scraper | 198 / 211 kW (266 / 283 hp) |
| Tractor Engine | Cat® C18 with ACERT Technology |
| Scraper Engine | Cat C9 with ACERT Technology |
| Scraper Capacity - Heaped | 38 m³ |
| Top Speed - Loaded | 53 km/h |
| Rated Load | 34473 kg |
| Scraper Capacity - Struck | 31 m³ |
| 180° Curb-to-Curb Turning Width | 13.7 m |
| Operating Weight - Loaded - Approximate | 88409 kg |
| Operating Weight - Empty - Approximate | 54050 kg |
| Height - Top of Scraper | 4.18 m |
| Wheel Base | 9.53 m |
| Length - Overall | 15.47 m |
| Width - Overall | 3.94 m |
| Tread - Scraper | 2.46 m |
| Tread - Tractor | 2.46 m |
