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Resin bolts type APP , APG , APB

Application

  • Resin bolts APP, APG; APB are designed to be used for roof and ribs support in mine working areas as an independent or additional roof support system. They are also used for the attachment of various components of mining equipment.

Photos

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Technical specification

  • AP bolts are modern design anchors with load capacity of up to 300 kN and a nut locking system (shearpin).
  • APP; APG; APB anchor rod is made from a reinforcing bar of 21.70 mm in diameter according to ZN-95/AP-1; ZN-02/AP-6 made of the following type of steel:

Bolt

Steel grade

Re min (MPa)

Rm min (MPa)

A5 min (%)

APP

AP 600

400

600

19

APG

 

AP 700

550

700

20

AP-E500

500

700

21

APB

AP 770

640

770

18

  • M24 nut is connected with the rod by means of a "SPIROL" ø3 or ø6 pin.
  • Spherical washer makes it possible to fix the anchor at 18°angle.
  • The anchor can be used with a square, round washers or square washer with an eyelet made of 8 or 10 mm plate.

 

Technical data

Rod diameter

dr = 21,70 mm

Thread size

M24

Thread length

150 mm

Rod length

od 400 do 4000 mm

Torque shearing the ø3 pin

80 ÷ 120 Nm

Torque shearing the ø6 "SPIROL" pin - (light)

40 ÷ 60 Nm

Torque shearing the ø6 "SPIROL" pin - (medium)

90 ÷ 120 Nm

Torque shearing the ø6 "SPIROL" pin - (heavy)

140 ÷ 160 Nm

 

Effective anchor capacity

APP – min 190 kN

APG – min 230 kN

APB – min 260 kN

 

Useful load

APP – 220 kN

APG – 250 kN

APB – 300 kN

 

Installation procedure

  • Put resin cartridges in the drill hole. Insert the anchor and rotate while pushing causing the resin to mix. During mixing, the nut does not turn as it is joined with the rod by means of a ø3 or ø6 pin.
    Once the resin has set, the pin is sheared by turning the nut. Apply torque of at least 250 Nm to screw on the M24 nut in order to tension the anchor to the desired pre stress (initial tension) of minimum 30 kN.

 

APP, APG, APB adhesive anchors have a Certificate issued by Central Mining Institute in Katowice allowing the product to bear the safety mark No. B/1160/II/2008.

 

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