CNC Machining of a Steel Chain Hoist Drum for Power Utility
We were recently contracted by a utility customer to custom machine the chain hoist drum highlighted here. It was designed to hoist a floodgate for their Wishon dam facility, and exemplifies our ability to precision machine large components with quick turnaround times. Silicon Valley Precision was contracted to perform all of the required work, utilizing our cutting edge 4 axis Awea VP2012 machining center and rotary table to perform the CNC milling. The drum is composed of 4140 steel round stock with finished dimensions of 36″ in length and an outer diameter of 14″. This part was machined using the 4th axis to produce the helix and using the 3 axis motion to ball mill the cross section of the helical groove. This part was produced to a Tolerance of +-.003″
This drum hoist was ordered on a Friday and was delivered the following Monday a 3 day turnaround. Silicon Valley Precision is committed to high quality precision CNC machining, with rapid turnaround times. For more about this chain hoist drum machining project, or our other value added horizontal and vertical machining capabilities, please see the table below or contact us directly.
Highlights of this Chain Hoist Drum Project
| Product Description | Chain Hoist Drum Project |
| CNC Machining Capabilities Applied/Processes | Primary: CNC Milling 4 axis Secondary: Deburring |
| Equipment Used to Manufacture Part | Awea VP2012 and Rotary table |
| Overall Part Dimensions | OD: 14" Length: 36" |
| Tightest Tolerances | +/- .005" |
| Material Used | 4140 Round Stock (steel) |
| Material Finish | Ball Mill Finish |
| In process testing/inspection performed | Dimensional Inspection Visual Inspection First Article Inspection Reports |
| Industry for Use | Used to hoist floodgate PGE on dam (Wishon dam) |
| Volume | 1 |
| Delivery/Turnaround Time | Deliver 5-10 pieces/day for duration of project |
| Delivery Location | FOB our shop |
| Standards Met | Customer Specifications 2D CAD Drawing Sketch |
| Product Name | Drum Hoist |
(click on thumbnail to enlarge)
