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Archive for June, 2009
Feed Opening Size Feasibility
Posted by Sid from New Delhi, AL, IN on June 19, 2009
There’s a 36″ X 38″ jaw crusher up for sale at quite a reasonable price. I find the feed opening size quite odd as I had heard about 36″ X 36″ and 36″ X 42″ size, but never about 36″ X 38″. I have doubts about the feasibility of the crusher. Can you tell me the relation between the feed opening size and feasibility? To what limit is it feasible to keep the shorter dimension of feed opening constant (36″ in this case) and keep on increasing the larger dimension (38″ in this case)?
Thanks in advance
Sid
Typically the designation or size of jaw is called out by it top opening. The first dimension is usually the distance between the stationary and movable jaws and the second dimension is the roughly the distance between the cheek plates -- thus the “usable opening”.
I agree with you when you say that the jaw size”36 x 38” is a bit odd. I checked back into the records at my disposal and found that most of the companies that manufacture jaws have a 36 x 42 or a 36x 48. This seems to be the norm for a 36” opening between the stationary & movable jaws. That’s not to say there has not been one made with the dimensions you have called out.
I’m not sure just what you mean by feasibility. Any given crusher manufacturer can, and at times has made jaw sizes out of this normal range of widths. What initially comes to mind are the jaws which have been produced to accommodate the recycling industry. In some cases there have been width increases to allow longer “slabs” of material to readily enter the chamber without bridging & plugging up the crusher.
If I were to have the manufacturer of the jaws you are reviewing, I would be happy to look into it further. If you choose, you can contact me directly at steve_dz@columbiasteel.com.