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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.
High Abrasive Material
Posted by Dhruv from Nangal, OT, IN on April 29, 2009
Dear Sir, I am crushing river bed material which has silica around 70%. Please advise me which mateial jaw plate I should use that will give me longer life.
There is more than one thing that determines the alloy recommended in jaw crushers. Given all other things equal, if the silica content is 70% and the compressive strength of the stone is above 40,000 psi than we would recommend a premium grade of manganese. If the compressive strength is below this number, chances are that the manganese will not work harden to its full extent. This basically means that you could by the premium grade of manganese and not achieve its full benefits.
Used Manganese Liners
Posted by Lynne from Mission, BC, CA on April 20, 2009
We have about 10 sets of manganese cone liners and some jaw plates –do you recycle these? Would there be any discount on the new jaw plates or liners if we traded the worn out ones for new ones?
Columbia Steel does purchase used manganese crusher liners and can also apply credit from used liners against new orders. It would be best if you contact Columbia Steel's purchasing manager Marty Slagle at marty_s@columbiasteel.com for more information.
Roll Bearings
Posted by Gary from Durango, CO, US on April 13, 2009
We have 1953 Pioneer roll crusher. I work for Niel’s Exc. Do you know were we can get parts? Bearing went out on one of the rolls. Can you help?
Columbia Steel is a wear parts supplier. For rolls crushers we typically supply the roll shells & the side or key plates. One would need to attain the bearings from the manufacturer of the machine or from a reputable bearing supplier. If a bearing supplier is engaged, they will typically need to know the physical dimensions of the existing bearing as well as its type.
BALDWIN LIMA HAMILTON
Posted by GUSTAVO from CHULA VISTA, CA, US on March 27, 2009
WOULD YOU KNOW OF ANYBODY THAT STILL CARRIES PARTS,
JAWS, TOGGLES, ETC. FOR BALDWIN LIMA HAMILTON CRUSHERS??
This could either be an old Eagle or Austin Western Jaw crusher. We may have parts for this depending upon what size & model crusher it is. Physical dimensions of the stationary & movable jaws along with photographs would get us closer to determining if we had anything we can supply. If you wish, follow up with me directly at steve_dz@columbiasteel.com
Cylinder End Bushing
Posted by Brett from Randolph, MN, US on March 19, 2009
I need to make replacement bushings for my customers cyl. rod. He gave me a worn out one for a sample. I had it analyzed and was told it has: C - 1.10, Mn - 13.0, Si - 0.55, P - 0.030, S - 0.010.
None of my regular suppliers seem to know what grade of material this is.
Can you help me?
Brett
The following answer was supplied by David Havel, Chief Metallurgist at Columbia Steel:
The material in question is a grade of Hadfields Manganese Steel. ASTM classifies this material as A128 grade A or grade B-2, both would provide for the measured chemistry. This type of material is used for bushings due to its anti-friction and work hardening properties. Columbia Steel makes bushings in this alloy as well as a few other suppliers. Most bushings of this material are castings, but a few suppliers sell forged bushings in this type of material.