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Application

Expansion shell bolts KE-3W and KE3-2K are designed to be used for roof and ribs support in mine working areas as an independent or secondary bolting support system and also to attach various components of mining equipment.

Technical description

Following rods can be used within KE-3W and KE3-2K expansion bolts :

Bolt typeRod type

KE-3W

RS-1SZ

RS-1SZ-Z

RS-1N

RS-1N-Z

KS-1

KS-1N

ES-1

KE3-2K

RS-2SZ

RS-2SZ-Z

RS-2N

RS-2N-Z

KS-2

KS-2N

ES-2

Bolt rods are made of plain AP 600 steel bar of ø18,3 mm according to ZN-97/AP-2 standard.

The rods vary in terms of shape and size of forged head.

KE-3W and KE3-2K expansion shells of ø36 mm are the elements which set the bolt in the hole. The KE-3W shell consists of 3 shells and one expander while the KE3-2K shell consists of 3 shells and 2 expanders

The following washer plates can be used with the bolts: square, square with a side hole, round, triangular and octagonal. The washer plates differ in press forming method and thickness.
The washers may have a conical or flat hole.
Washers with a side hole of ø 15 can be used for attaching elements of mining equipment.
They should be used if there is no hole in the rod. All the washers are made of 6mm plate.

Technical data

SpecificationsValue

 

Rod diameter

 

 

ø18,3 mm

 

Thread

 

M20

 

 

Thread length

 

 

80 mm (rod for KE-3W shell)

170 mm (rod for KE3-2K shell)

 

 

Rod length

 

 

1200 ; 1400 ; 1600 ; 1800 ; 2000 ; 2200 ; 2400 ; 2600 ; 2800 ; 3000 ; 3200 mm

 

Head diameter KE-3W ; KE3-2K

ø36 mm

Head length

KE-3W - 93 mm

KE3-2K - 136 mm

 

Bolt capacity according to regulations

min 100 kN

 

Useful load

 

170 kN

 

Installation procedure

 

Drill a hole of ø38 ± 0,5mm in diameter and length equal to the length of the bolt. Reassemble the bolt by placing the washer and shell on the rod.
Place the bolt in the hole and push until the washer rests against the rock surface. Turn 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 pretension of at least 30kN.


KE-3W; KE3-2K expansion bolts have a Certificate of Conformity No. 63/3/2014 issued by "INOVA" Technical Innovation Centre Ltd. in Lubin.