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Steve Dolezal
Product Engineering Manager
Columbia Steel Casting Co., Inc.
(800) 547-9471
Steve Dolezal has been a crusher wear parts engineer at Columbia Steel for 21 years. His knowledge includes a wide variety of jaw, cone and roll crusher makes and models, as well as their specific industry applications and equipment conditions. He works closely with customers to recommend and develop wear parts to better meet their needs, often resulting in increased service life, throughput, or both. Doug Henderson will answer questions about gyratory crusher wear parts with his expertise as a product engineer at Columbia Steel for over 10 years.
Jaw Crusher Dies
Posted by Simon from Santa Marta, OT, CO on August 5, 2010
I need a set of jaw dies for a Universal Rock Equipment jaw Crusher 10 x 36, where do I feed these? I’m in Colombia, South America.
Thanks.
Simon,
Universal made more than one version of this size crusher. Depending upon the age or when the crusher was manufactured would determine its version. The basic differences are in frame construction and type of bearings. The jaws should be interchangeable between all three versions.
Columbia Steel has pattern equipment for the jaws. Knowing the type of feed & size would help in determining the best tooth form suited for your application. Contact me at steve_dz@columbiasteel.com if you'd like to continue the discussion.
Steve Dolezal
Product Engineering Manager
Manual for a Gruendler Crusher & Pulverizer
Posted by jessica from west palm beach, FL, US on June 22, 2010
Where can I purchase a manual for the Gruendler Crusher & Pulverizer model 18/16s serial 21283 that was made in the 70’s?
Try contacting:
Simplicity/Gruendler Crushers
212 S. Oak St.
Durand, MI 48429
T 989-288-3121
F 989-288-4113
Metal Detection
Posted by K from Queensland, OT, AU on April 9, 2010
Hi Steve,
I am looking for information regarding the sensitivity of the metal detectors on a Terex Pegson 4 foot cone crusher. I want to start using electronic detonators at a quarry but am worried about the wires causing issues in my crushing process. Have you got any advice?
I am not sure how sensitive that particular metal detector would be. There is not a lot of metal in blasting cap leg wires and they are usually dispersed through the shot a bit, so I would suspect they would go through without issue, but I would get some leg wires or other wire and run a few different size wads of wire through the sensor to get a feel for how sensitive that particular metal detector is.
Contacting Terex about the sensitivity of the metal detectors would also be a good idea.
This answer supplied by Doug Henderson, product engineering manager at Columbia Steel
Jaw Dies for Eagle Austin Western 20 x 36
Posted by mike from kennewick, WA, VI on February 12, 2010
My current arrangement produces to much oversize output. What is best
and most economical way to reduce size of output to the smallest possible?
Before one can answer this question there are a few items that must be examined.
First, what is the condition of the jaws? Jaws typically show higher wear towards the center than the sides. The discharge setting is typically determined by the distance between the stationary and movable jaw, by measuring between the crowns. As the jaws wear down the sides dictate just how closed the stationary can be adjusted to the movable. Therefore, it is not uncommon for a set of jaws to have a discharge setting 2-3 inches greater when it is worn than when it is new.
The second consideration is related to the length of toggle plate. Since most of a crusher’s product size is related to the discharge setting, is there enough adjustment in the crusher to allow one to decrease the close side setting to attain a “finer” product?
If the jaws are relatively new and there is enough adjustment left in the crusher, than one needs to address the gradation with designs. Typically the greater the tooth pitch the coarser the product. If the tooth pitch was 4” and a “finer” product is desired, than a 2” tooth pitch may help.
Better Material of Cone Crusher
Posted by Deddy from Medan, OT, ID on January 22, 2010
Hi Steve,
What is the better material supplied to have more longer life time for Cone Crusher? We currently use the 13% High Manganese Steel to crushing the Granite stone on site, but hope we can extend the life time by increasing the grade of material.
There are another grate like 18% of Mn and about 21% of Mn. What is the best material to pick? Does the higher grade can cause cracking possibility of Cone while being operated?
If you can determine each characteristic of those each grade it will be very appreciated.
Thank you.
Deddy
Usually, a given manganese wear parts supplier offers two grades of manganese; a regular grade which is around 12% and a premium grade which is around 18%-24%. To increase liner life with the premium grade one has to be crushing a higher compressive strength stone, granite would certainly fall into this category. I have seen that with customers using our premium grade manganese and crushing granite, their liner life has increase by 15%. This does not say that your liners will attain this added service life, but, you should experience some increased service life.
To answer your next question regarding cracking, one must first understand why the liners are lasting longer. Due to the nature of the premium grade manganese, the crushing surface will work harden to a greater extent. Anytime this occurs, you run the risk of cracks forming due to fatigue. We have found that the amount of trace elements help to limit this from happening, thus allows a set of liners to run full term without cracks forming.