Grinding & Classification Circuits

Grinding & Classification Circuits

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Ball Mill Girth gear drilling problem (1 reply and 1 comment)

S
Sayed9
6 years ago
Sayed9 6 years ago

Hi

we have replaced the girth gear of a ball mill used for coke grinding, and we have completed gear alignment.

our procedure to use four holes of the gear fixing bolt , drill these hole to increase the diameter and then for reaming out . The purpose to keep and fix our alignment.

But we faced problem in hole drilling, we have succeeded to drill only 70% of one hole but then the drilling machine (megantic) burn out and the drilling bit is HSS.

so my questions:

  • what is your practice to keep the alignment?
  • what is your suggestion to my problem ?  
David
6 years ago
David 6 years ago
Like

Are you trying to use something like a dowel pin to keep it located? Are you using a drill or rotabroach?

S
Sayed9
6 years ago

Hi ,

We are using magantic drilling machine with HSS drilling bit .

Have you used Rotabroch for drilling a girth gear ? Annular Cutter will do the job with a good accuracy ?

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