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Grips for secondary bolting

Application

Grips are designed for secondary bolting of arches made out of V25, V29 and V36 shaped section.

Technical specification

According to arch section shape there are following type of grips:

Arch typeGrip typeRod thread
V25 U-V25-24 M24
V29 U-V29-24 M24
V36 U-V36-24 M24

 

Arch typeGrip typeRod thread
V25 U-V25-20 M20
V29 U-V29-20 >M20
V36 U-V36-20 M20

Grips are fixe by two bolts or by Bolt and hook screw M24 lub M20.

Grips are made of typical J25 ; J29 ;J36 type section.

 

Technical data

SpecificationsValue

Grip width

 V25 – 70 mm
V29 – 80 mm
V36 – 80 mm
Hole diameter ø 26 mm – for thread M24
ø 22 mm – for thread M20

 


Grips for secondary bolting U-V25-24 ; U-V29-24 ; U-V36-24 and hooked screws M24 have Certificate allowing the product to be marked with the safety mark No. B/1160/2005 issued by Central Mining Institute in Katowice.


Grips for secondary bolting U-V25-20 ; U-V29-20 ; U-V36-20 and hooked screws M20 have Certificate allowing the product to be marked with the safety mark No. B/1194/2005 issued by Central Mining Institute in Katowice.

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