Core bit tubes · core bit bodies

Core bit tubes for diamond core bits. Tolerances you can see in the bit's run-out.

Steel bodies for manufacturing and retipping core drill bits – in standard diameters or to size: length, wall thickness and end finish for your thread. For retippers, manufacturers and service workshops across Europe.

Choose tubes Custom-size tubes
  • Ø 8–500 mmstandard and to order
  • Custom lengthswith an end finish for your thread
  • Straightness checkand run-out on every batch
  • Private labelunder your own brand
Drawing of a core bit tube with diameter, wall thickness, length and threaded end Ø D L wall s end finish

Core bit tubes

Diameter, length, end finish

Choose a series, diameter and length. Other dimensions and end finishes are made to order.

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0 tube series

Sample data – final data from PIM / ERP

    Dimensions

    Typical core bit tube dimensions

    Wall thickness grows with diameter – so the body carries the drill's torque and the segment keeps its side clearance.

    Ø D range [mm]Wall s [mm]Lengths L [mm]End finishTypical use
    8–621.0–1.5300 · 4001/2" BSPanchors, cable penetrations
    63–1621.5–2.0400 · 450 · 5001 1/4" UNC, M16service penetrations
    163–3002.0–2.5450 · 500 · 6001 1/4" UNCventilation, drainage
    301–5002.5–3.5450 · 500 · 6001 1/4" UNCprocess openings

    Typical, indicative values. Straightness and run-out tolerances are given in the batch specification values stated in the quotation.

    For retippers and manufacturers

    What ruins a core bit before it starts drilling

    • Bit run-out

      Cause: a bent tube or an end finish that is not concentric.

      Fix: straightness and concentricity checked on every batch.

    • Cracking during brazing

      Cause: a wall too thin for the diameter, inconsistent material.

      Fix: wall matched to the diameter, steel from a single heat.

    • Different batches, different sizes

      Cause: a supplier without dimensional control.

      Fix: every batch measured to a repeatable specification.

    • Non-standard length

      Cause: thick walls, special drilling rigs.

      Fix: tubes to size with an end finish for your thread.

    Quote request

    Standard tubes or made to size

    Give us diameters, lengths, end finish and quantities. Samples are available on request.

    1. 01Specification and quantities
    2. 02Samples for testing
    3. 03Deliveries in repeatable batches

    Core bit tube quote request

    Fields marked are required.

    Questions

    Core bit tubes – frequently asked questions

    For retippers and manufacturers
    What wall thickness does a core bit tube have?

    It depends on the diameter – from about 1 mm on small core bits to 3 mm and more on large ones. The wall must carry the torque and the segment needs side clearance. See the dimensions table.

    Do you make tubes to size?

    Yes – diameter, length, wall and end finish for your drill's thread, to your specification.

    Can I order tubes under my own brand?

    Yes, as private label. Minimum batch: from 100 pcs of one size

    Do you also supply core bit segments?

    Yes – diamond segments with the same formulation in every batch.