I am in need of purchasing a boring head. Rather than buy multiple I would like the following;



  • fits Bridgeport R8
  • fits NT50
  • preferably able to go from small holes up to say 100mm+




I expect the boring head is threaded and can be fitted onto different tooling (R8 and NT50 in my case) so I expect the first 2 points are easily accounted for. As for the size holes it will do, are there different sizes or do I just use longer bars to achieve additional size?

Is the thicker boring bar always better? Can a large boring head still accurately do smaller holes?

What boring heads can you guys recommend (and sources)???


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