How many yards an hours would you figure a komatsu 220 can dig placing it in a pile behind you?
Is there a prize for the right answer?
Around 200 yards? I'm guessing, so don't take my word for it, but it should be somewhere in that ballpark.
no prize, A guy I am working with is bidding a job where he is going to dig dirt off of a road and me and another guy are going to grab it with loaders and move it 900ft give or take. he was figuring 120 yards. I just wanted know how close he is on his yardage.
On second thought, 160 yards and hour might be more realistic, if you are using the machine at full throttle. 120 an hour if you are moving the spoils some distance by moving the stick a lot or if you are digging more slowly at lower RPM.
We are cutting down the road on the top of a hill and moving it down the hill. We have two loaders with 4 yard buckets. What kind of price are you getting to move dirt per yard??
A lot would depend on how big the bucket is, soil conditions, and the work area. With a two yard clean up bucket, soft soil, and lots of room to work, upwards of two hundred yards an hour should be possible. With a smaller bucket and site restrictions, his 120 yards an hour may be realistic.
Digging what? Sand, candyfloss, granite, loam? I tell you won't be digging with the big bucket unless it is candyfloss. So work on the standard size bucket and cycle times. Say you get a yard in the bucket (heaped), two cycles a minute will give you 120 yards an hour. However you may find that the bucket doesn't hold a yard but the operator gets more than 2 cycles a minute (which he should in a modern machine), so 120 an hour should be getable. Generally in hilly areas you will encounter hard stuff but if it is a previously built road it should be pretty much good going. Anyway the operator should know what he can do so work with that. If he says 120, you gotta trust him.
I should hope he can get more than two cycles a minute! I think I average around 17 seconds on a 385C (just under 4 a minute) and 12 or 13 on a 350D (5 per minute). A 220 is smaller and should be even faster.
Yes!!! Two cycles a minute is awfully slow. That's why I initially guessed 200 yards/minute. Any somewhat competent operator should get at least 160 yds/minute on that machine if you're digging just soil or or loose gravel and have space to work. Now if you're digging at and dumping full reach of the machine and have to swing 180 degrees and are trying to save fuel... maybe then two cycles a minute can be accepted.
In the world of excavations there are a lot of variables that come into play, digging into hard stuff will slow things down, as getting a full (heaped) bucket is pretty hard. Also having to shift the machine will take time, not so bad if it is only in one direction but if the machine has to be moved sideways to fully excavate it will take longer. I guess the operators estimate of 120 yards is an average, which works out at 7200 yards an hour.
What?
there are many variables here.....are you digging 2' deep, and making trim passes at the bottom of that 2'? or are you digging 12' deep...majority of the excavation is just hogging out the hole...with the trim passes at the bottom? or are you just hogging out a hole, no trim passes? production here could easily vary from 100-180 yds per hour dependent on the scenario
My idiocy got multiplied. I meant to write yards an hour instead of yards per minute, and then he multiplied my figures by 60 to create a super messed up number.