Custom CNC Machined Steel Hub and Sprocket Assembly for a Giant Bucket Wheel Loader

Denver Machine Shop took on the challenge of machining a steel hub and sprocket assembly for an OEM client servicing their customer with spare parts for a reclaiming machine that unloads barges in the Middle East. This assembly drives the chain for the continuous reclaiming mining application. 1045 Steel was milled on our CNC horizontal mill, and then turned to the precise dimensions on our vertical turret lathe which features a 60″ swing. Tight tolerance of ±0.0005″ was maintained throughout following the client’s engineering CAD drawings for all components of the assembly. Flame hardening was applied to the chain joints for improved wear resistance and strength. The unit was de-burred and assembled, painted per the clients 3 coat epoxy specification, and ultimately delivered overseas with the client’s shipping papers, to the end user, as specified. The turnaround time for this custom machining work was 4 weeks.

This sprocket assembly, shown adjacent, was 4 Ft. in diameter, and weighed 400 lbs. Steps to ensure precision and quality were taken during and after fabrication including dimensional inspections, functionality testing, and hardness testing. Denver Machine is proud to offer our expert fabrication services, for projects of any size, to customers across the country and internationally. With over 100 years of experience and a full service machine shop, we are able to assist customers with all phases of a project from conception to manufacturing. Our work and processes adhere to the highest industry standards. For more information about this custom fabrication or our other capabilities, please see the table below or contact us directly.

Highlights of this Steel Hub and Sprocket Assembly Project:

Product Description  Continuous Mining Machine Application. Drives the Chain
Capabilities Applied/Processes
Primary: 
Turning 
Milling 
Secondary: 
De-Burring
Assembly 
Flame Hardening – in chain joints
Equipment Used to Manufacture Part  60″ Swing Vertical Turret Lathe, 92” x 76” CNC Horizontal Mill, Flame Hardening
Overall Part Dimensions  Product Diameter: Ø 4′ 
600 Lbs.
Tightest Tolerances  ±0.0005″
Material Used  1045 Steel
Material Finish  Machined Finish
In process testing/inspection performed  Dimensional Inspections, Functionality Testing, Hardness Testing
Industry for Use  Mining
Volume  2 sets
Delivery/Turnaround Time  4 Weeks
Delivery Location  To OEM’s customer site
Standards Met  Customer Specifications, 2D CAD Drawing
Product Name  Hub and Sprocket Assembly
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