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29-8 Edition 47
Estimated Hourly Production
●
WheelTractor-Scrapers
Stockpile Coal Handling
PRODUCTION INTONS/HR
HAUL DISTANCE (ONEWAY)
Feet
Meters
Metric
Tons
English
ShortTons
Wheel Tractor-Scrapers Estimated Production
Factors:
●
Mixed Bituminous Coal
●
Storage and Reclamation
●
0% Grade
●
0.50 Coefficient of Traction
(Tons per 60-Minute Hour)
Coal Scraper
Bowl Capacities
Metric tons
U.S. tons
Struck
Heaped
m
3
yd
3
m
3
yd
3
657K
49.9
55
45
59
56
73
637K
34.5
38
31
41
38
50
Average fixed time to load, maneuver and dump:
657K — 1.12 min.
637K — 1.10 min.
NOTE:
●
The 657K Coal Scraper is 1072 mm (42.2") longer,
the bowl sides are 1010 mm (39.8") taller, the apron is
677 mm (26.7") taller, and the ejector is 944 mm
(37.2") taller than its earthmoving counterpart.
●
The 637K Coal Scraper is 736 mm (29.0") longer, the
bowl sides are 476 mm (18.7") taller, and the apron is
499 mm (19.6") taller than its earthmoving counterpart.
●
The rimpull, travel times, and retarder performance
for the coal scrapers are the same as for the standard
machines. See Wheel Tractor-Scrapers section for
charts and graphs.
657K
637K