Accuracy of excavator bucket breakout digging force

[liberty2701]

It seems that comparable machines from different manufactures have huge differences in the advertised numbers. Do these numbers matter when deciding on a machine?

 

[Peter 315]

What are you trying to do with the machine ,We do water main and use Komatsu pc60, pc78, pc138

 

[LD1]

Just what machines are we talking about?

50-ton machines?
15-ton machines?
Mini-ex's?

I would say if there is THAT huge of a difference, then the machines arent really comparable

 

[liberty2701]

More of a curiosity than a need. It is something I noticed when looking at excavators. Is it like HP on small engines when manufactures always fudged the numbers. 5 to 10 ton machines. Certain 18k machines go from 10k to 15k lb of breakout force.

 

[Peter 315]

A lot depends on the operator not the machine . If your just playing on your land . The doosan will be fine

 

[liberty2701]

I figured that but was wondering if the industry is honest.

 

[LD1]

You would have to cite certain examples, but I would have to believe that in the real world there isnt gonna be much operational difference of machines of the same weight class

 

[liberty2701]

Here is one chart I came across when searching.
http://kubota.com/assets/product/comps/KX080-4S/KX080-4S_Comps.pdf

The Takeuchi is over 16k lb breakout. The JD is around 10k lb.

 

[LD1]

Id say pretty comparable.

But alot has to do with bucket geometry. What type of coupler if any. (coupler extends bucket further out....less leverage).

But even the lowest....10k bucket force on a 20k machine.....plenty.

If you are stumping, get the one with the most force.

But just general digging and trenching....you use crowd alot more than bucket power

 

[Peter 315]

It also has 4 hyd pumps