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621G Wheel Tractor Scraper

Posted By admin On November 15, 2007 @ 12:00 am In Boomerang | No Comments

Caterpillar Wheel Tractor-Scrapers offer fast cycle times, with quick loading, high travel speeds and the ability to load and dump on the run. Rugged construction and easy maintenance assure long life with low operating costs.


 


 


 



 


 





























































































































































































































































































































































































































































































































































































Tractor Engine

Units:  US 


Net Power – Tractor/Scraper


246 kW (330 hp)



Gross Power – Gears 1-2


359 hp



Gross Power – Gears 3-8


394 hp



Net Power – Gears 1-2


330 hp



Net Power – Gears 3-8


365 hp



Caterpillar Net Power


330 hp



ISO 9249


330 hp



EEC 80/1269


330 hp



SAE J1349


326 hp



Bore


5.5 in



Stroke


6.5 in



Displacement


928 in3




Scraper Bowl



Capacity Heaped


22 yd3



Rated Load


52800 lb



Capacity Struck


15.7 yd3



Depth of Cut – max.


13.1 in



Width of Cut, to Router Bits


119 in



Ground Clearance – max.


20.6 in



Cutting Edge – thickness


.88 in.



Hyd. Penetration Force – 621G


33840 lb



Depth of Spread – max.


20.6 in



Apron Opening


70 in



Apron Closure Force


24075 lb




Transmission



Travel Speed Maximum


32 mph



1 Forward


3.1 mph



2 Forward


4.7 mph



3 Forward


6.8 mph



5 Forward


12.4 mph



4 Forward


9.2 mph



6 Forward


16.7 mph



7 Forward


22.6 mph



8 Forward


32 mph



Reverse


5.7 mph




Weights



Operating Weight


124590 lb




Weights – Standard, tandem



Total Shipping


72455 lb



Tractor Shipping


49994 lb



Scraper Shipping


22461 lb



Total Operating – empty


73789 lb



Front Axle


50176 lb



Rear Axle


23612 lb



Total Operating – loaded


126589 lb



Front Axle Weight – loaded


67092 lb



Rear Axle Weight – loaded


59497 lb




Dimensions



Width – overall machine


136.5 in



Width – tractor


123.2 in



Width – rear tire center lines


85.8 in



Width – inside of bowl


116 in



Width – outside rear tires


120 in



Height – overall shipping


145.9 in



Height – top of cab


134.8 in



Ground Clearance, Tractor


21.8 in



Front of Tractor to Front Axle


120.4 in



Rim radius


17 in



Axle to Vertical Hitch Pin


17 in



Height – scraper blade max.


20.6 in



Wheelbase


304 in



Length – overall machine


508.5 in



Rear Axle to Rear of Machine


84.3 in



Bail Length – max. (push-pull)


63.5 in



Extended Push Block (push-pull)


109.7 in




Steering



Width – 180° Turn


35.9 ft



Steering Angle – right


90°



Steering Angle – left


85°



Hydraulic Output


55 gal/min




Service Refill Capacities – Tractor



Crankcase


9.5 gal



Transmission


19 gal



Differential


38 gal



Final Drive (per side)


5 gal



Cooling System


28 gal



Hydraulic Reservoir


37 gal



Wheel Coolant (each)


12 gal



Windshield Washer


1.5 gal




Hydraulics



Bowl Cylinder Bore


6 in



Bowl Cylinder Stoke


32 in



Apron Cylinder Bore


7.25 in



Apron Cylinder Stroke


23.5 in



Ejector Cylinder Bore


6.5 in



Ejector Cylinder Stroke


61 in



Steering Circuit


55 gal/min



Scraper Circuit


65.5 gal/min



Cushion Hitch Circuit


9.8 gal/min



Secondary Steering Circuit


39.9 gal/min



Relief Valve – Steering Circuit


2250 psi



Relief Valve – Implement Circuit


2175 psi



Compensator Setting – Cushion Hitch Circuit


2175 psi


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