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How to machine tapered journals in-situ

Posted by Alan Hillier on May 1, 2018 9:04:00 AM

 trunnion-journal-machining-in-situ

Ball mills and rotary kilns used in the mining industry consist of a hollow cylindrical shell rotating about its axis, with a large trunnion at each end for supporting the shell and its contents.

Considering the stresses involved, it comes as no surprise that the journal diameters on these trunnions eventually get worn, making the mill or kiln less effective or inoperable. To solve this problem, Mirage developed the SRB3000, which can re-machine worn journals in-situ in the vertical orientation, or in horizontally in a workshop environment.

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Topics: portable machine tools, journal turning

Using a flange facer for turning a journal

Posted by Alan Hillier on Nov 23, 2017 9:13:40 AM

 

The video here shows a test cut using the Mirage MM610i with a journal turning attachment kit.

Although the primary purpose of the MM610i is to carry out flange facing tasks, there more that this versatile machine can do. By replacing the facing arm with a purpose built additional option, you can use the MM610i to machine ‘journals’. This job is often needed in the power generation industries.as part of a motor or turbine refurbishment.

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Topics: On-site machining, flange facing, journal turning

   

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