Split Friction Pipe Bolts

Split Friction Pipe Bolts are designed for roof and ribs support in mine working areas as an independent or secondary bolting roof support system. They are also used for the attachment of various components of mining equipment.

The bolt is made from a section of Ø33, Ø39, or Ø48 mm in diameter and dedicated thickness. The cross-section of the bolt is an incomplete outline of the pipe that closes during the bolting operation.

The upper part of the anchor is formed into a cone. The lower part has a retaining ring for mounting the washer. When set in the hole, the bolt is given the required load capacity due to elastic rod structure.

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Advantages
  • Support in bursts and tectonic movements
  • High bolt capacity
  • A wide range of diameters available
Features
  • Easy installation system that guarantees immediate achievement of anchor bolting capacity parameters
  • Hole Diameter Ranges: 30mm - 32mm // 35mm - 38mm // 44mm - 46.5mm

Product Options
  • As a standard practice, anchor poles are packed in bundles of 100 pcs and plates are stapled with 10 pcs of wire.

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Upon insertion of the expansion anchor into the borehole, the plastic ring holding the wedges at their minimum diameter is scraped at the borehole edge. Immediately after this, the liberated wedges assume the geometry of the borehole under the spring effect. Any return movement is now excluded and each load transferred from the anchor rod to the expanding head causes further spreading of the wedges.
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