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Cat’s Front Shovels areSomewhat limited (we willUse them in our example)Hitachi and others have someExcellent offerings.
Only the 5230B is in theSize range we are lookingFor with a 22.2 yd^3 bucket
Buckets Limited in Front Shovel Configuration
Fill Factor = 102/(5*22.2) = 0.9189 – ie about 92%Reasonable for our material and matches the truck with anInteger number of passes
Checking on Loading Height and Reach
Over 36 feet up – ya thatWill load a 16 ft high truckWell over 12 feetExtension definitelyReaches the center of thetruck
Just in case we are notSure it shows the dimensionsOf a 785 truck
Note This
Even a big front end loader struggles with lift and reach
Hydraulic Front Shovels really have almost no challenge if they are sized anywhere close to right
Time to Input into FPC
I will create a 2nd
Fleet for comparisonClick Add New Fleet
Input name anddescription
Input My Same Truck Info
Now we willSelect a loader
Pick My 5230B Front Shovel
Select Cat StandardMachines
Select HydraulicExcavators
Pick the 5230B fromThe list
Click Ok
Check Out Cycle Time
The Cat program defaults to single truck loading• 0.7 for the truck exchange• 0.05 to dump first bucket• 0.48 min for each subsequent pass (4)• Total 2.67 minutes
20 minute truck cycle / 2.67 loader cycle• One loader can handle 7.5 trucks• Pick 2 loaders
Adjust My FPC inputs
2 loaders
85% availability
92% Fill Factor
Try Matching a Cable Shovel
Cable Shovels Favor Larger Sizes Their buckets are called dippers Their Dippers are rated on struck-
not heaped capacity
Fill Factors by Material Constraint
Cable Shovels have more limited motion than a hydraulic front shovel
Easy - Sand and Gravel get about 0.95 to 1 Medium - Unconsolidated - some boulders 0.90
to 0.95 Hard - Well Blasted - has void space
(Limestone) 0.8 to 0.9 Very Hard - Interlocking Chunks 0.7 to 0.8