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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.
Type of Crusher Best for Recycling
Posted by paul from lansing, MI, US on March 13, 2009
What type/model crusher would you recommend for recycling 4″–6″ thick slab concrete broken into approx. 2′x2′ pcs. down to 3/4–1″ aggregate? I would like tranport the crusher to the jobsite, moving 1–3 times per week and reuse or sell the crushed concrete.
Thanks, Paul
There are a broad range of crushers available for the recycle industry. They range from vertical to horizontal impactors to special wide jaw crushers. It appears that the general consensus is to use horizontal impactors. Most of the large crusher manufacturers offer one or more sizes to choose from. I would contact one of these manufactures for your needs.
TOGGLE BEARING
Posted by John from Langeloth, PA, US on March 12, 2009
i AM LOOKING FOR 2 PCS. TOGGLE BEARING #866 FOR BIRDSBORO SAMPLE CRUSHER, 12 X 16
Although we do not have anything listed for this size crusher, it does not imply that we cannot help out. We would need a sample casting or dimensional data in the form of a sketch or end tracing w/overall length to determine if we had anything close enough to offer or to make new drawings for quotation purposes. Feel free to contact me directly if this is the direction you'd like to pursue -- steve_dz@columbiasteel.com
Manganese Content
Posted by mani from houston, TX, US on February 27, 2009
Steve:
What is the typical or minimum manganese content in the jaw plate of rock crusher. Also, Mn content of rock crusher cones. Compared to autoshredder, do rock crushers usually contain higher manganese steel?
The minimum manganese content for jaws or cones is specified by each manufacturer. Columbia Steel’s minimum Mn contents for jaws & cones are 12%. Other elements are added to enhance the properties of Mn giving it better strength & ductility.
Bridging in Jaw
Posted by Dan from Pickering, ON, CA on February 10, 2009
We replaced the jaw dies in our 32 40 jaw with dies recommended by our supplier for recycling concrete. The stationary jaw has smooth sides. Material begins to bridge on the side and spreads across entire jaw untill jaw plugs. Any suggestions?
The problem described typically occurs when there is too large of a void between the edge of the jaw & the cheek plate. Usually when the void is filled in on the casting, it eliminates the situation described. In order to diagnose your problem correctly, I would need to visually see the situation you have described. Photos would be best. You can email photos to me at steve_dz@columbiasteel.com if you would like me to take a closer look.
Crusher Design / Recommendation
Posted by Scott from Waterford, OH, US on December 17, 2008
We have a small masonry company. In the past we have just hauled the refuge away from the job site. This was a large expense. Now with the new LEED green rating/points their is an option of crushing the refuge on site. For the most part we would need a small machine that could crush 12″x8″x16″ block (high void) and 4″ x 4″ x 12″ brick (solid) along with the misc globs of mortar and concrete. What would be the best type of crusher for us? What approximate size would you recommend? Smaller the better as often we would neeed to move it around the job site with a skid steer or small fork truck.
In a case like this I would consider using a jaw crusher. The size should be around 15 x 24. Many manufacturers have this size available; check into Cedarapids, Diamond, Pioneer & Universal.
Steve Dolezal
Product Engineering Manager