Custom Repair of an Aggregate Cone Crusher

Denver Machine Shop was contracted to completely rebuild the HP300 Nordberg cone crusher head, shown adjacent, for a client in the aggregate mining industry. This is a high pressure part used to crush rock and aggregate. After disassembling the part, and inspecting it thoroughly, we prepped the piece for welding and employed our advanced Sub-arc Welding Machine, and 20,000 lb. capacity Weld Positioner to perform a weld build-up of over ½ in. thickness. We used carbon steel for this hard surface weld, returning the cone to oversize of its original dimensions. Utilizing our 90″ swing arm Vertical Boring Mill, the part was machined holding tight tolerances of ±0.001″. The unit was sandblasted to a 125 RMS finish, and our techs reassembled and re-installed on the customer’s site.

This cone crusher head weighed in at 3,200 lbs., with a length of 3 Ft. The top diameter is 10 in. and the bottom diameter is 4 Ft. Q & A inspection included dimensional testing, functionality testing, and surface finish. Turnaround time for a project of this magnitude is 1 week, and our services are available nationwide. This is a prime example of the type of work we do best. Denver Machine expertly rebuilds, repairs, and manufactures heavy duty industrial machinery holding to the highest quality standards. For more information about this cone crusher rebuild project or any of our other capabilities please see the table below or contactus directly.

Highlights of this Cone Crusher Rebuild Project:

Product Description Used for adjusting a plug mill in a steel mill application
Capabilities Applied/Processes
Primary: 
Disassembly 
Inspection 
Welding Build Up 
Machining
Reassembly 
Secondary: 
Sand Blasted 
Cleaned
Equipment Used to Manufacture Part Sub-Arc Welder, 20,000 lbs. Weld Positioner, 90″ Swing Arm Vertical Boring Mill
Overall Part Dimensions Product Length: 3′ 
Product Diameter: Ø 4′ on the bottom, Ø 10″ on the top 
3200 lbs
Tightest Tolerances ± 0.001″
Material Used 125 RMS
Material Finish Product Length: 3′
Product Diameter: Ø 4′ on the bottom, Ø 10″ on the top
3200 lbs
Additional Facts Installed by our techs on-site; Over ½” of weld build-up
In process testing/inspection performed Dimensional Inspection, Surface Finish Inspections, Functionality Testing
Industry for Use Rock Crusher/Aggregate Mining
Volume 1
Delivery/Turnaround Time 1 Week
Delivery Location Nationwide
Standards Met Customer Specifications, 2D CAD Drawing
Product Name Cone Crusher

 

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