Search

Expansion Shell Hades type KE-4W/M20 , KE-4W/M24 , KE4-2K/M20 , KE4-2K/M24

Application

  • Expansion shell heads type KE-4W/M20 ; KE-4W/M24 ; KE4-2K/M20 ; KE4-2K/M24 Are parts of expansion Shell bolts and are designed as designed to be used for roof and ribs support in mine working areas as an independent or secondary bolting support system and for attachment of various components of mining equipment.

Photos

262.jpg 263.jpg 264.jpg

Technical specification

  • Expansion shell heads are elements which set the bolt in the borehole.

    Head components are :

Head type

Shell

Wedge

Spring ø37

KE-4W/M20

KE-4W/M24

4 pcs

1 pcs

2 pcs

  • Head works with the rod of min 80 mm thread.

Head type

Shell

Wedge

Spring ø37

KE4-2K/M20

KE4-2K/M24

4 pcs

2 pcs

2 pcs

  • Head works with the rod of min 170 mm thread.

 

Technical data

  • Expansion shell heads type KE-4W/M20 ; KE-4W/M24

Head diameter

ø 42 mm

Head length

93 mm

Wedge thread

M20 for KE-4W/M20

M24 for KE-4W/M24

Capacity

min 100 kN

  • Expansion shell heads type KE4-2K/M20 ; KE4-2K/M24

Head diameter

ø 42 mm

Head length

136 mm

Wedge thread

M20 for KE4-2K/M20

M24 for KE4-2K/M24

Capacity

150 kN

 

 

Installation procedure

  • Drill a hole of ø44 ± 0,5mm in diameter and length equal to the length of the bolt.
    Reassemble the bolt by placing the washer and head on the rod. Insert the bolt into the hole and push until the washer rests against the rock surface. Rotate the rod and as a result the shell expands in the hole. Tighten the bolt by applying at least 250 Nm torque in order to obtain the prestress of at least 30kN.