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Version 2
D1=internal diameter


Drill bushes

DIN 172 - Flanged drill bushes

The flange on these drill bushes prevents the bush being pressed fully into the recieving bore. DIN 172 flanged drill bushes sit a little bit proud of the jig plates top face.
  • Form A:
    The bore is rounded on one end

  • Form B:
    The bore is rounded both ends

DIN 173 - Replaceable drill bush

In contrast to DIN 179 drill bushes, DIN 173 bushes can be quickly removed and exchanged enabling different diameter bushes to be used in the same jig. When used together with DIN 173 clamping bushes, DIN 173 panhead screws and DIN 912 cap screws, sure results are guaranteed.
  • Form A:
    No insert chamfer – These drill bushes are used predominantly to guide drills in drilling jigs as they enable a rapid change for different drill diameters.

  • Form K:
    Used as quick-change bushes for RH cutting tools.

  • Form L:
    These belong to the exchangeable types of bushes.

DIN 173 - bush clamps

Bush clamps are used to secure replaceable drill bushes. They lock the drill bush in place and ensure safety during machine operation.

Note: The 1.0711 steel bush clamps are supplied with a steel DIN 912 cap screw eliminating the need to separately acquire the screw required to fasten the bush in place.

DIN 179 - Cylindrical drill bushes

The DIN 179 drill bushes are parallel cylindrical drill bushes. They are machined from a special low-carbon steel and then case hardened and ground.

Cylindrical drill bushes are also often used as positioning bushes. The bushes can be pressed in flush to the work surface. DIN 179 drill bushes can be combined with DIN 173 replaceable drill bushes.
  • Form A:
    The bore is rounded on one end

  • Form B:
    The bore is rounded both ends
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