Grips are designed for secondary bolting of arches made out of V25, V29 and V36 shaped section.
According to arch section shape there are following type of grips:
Arch type | Grip type | Rod thread |
---|---|---|
V25 | U-V25-24 | M24 |
V29 | U-V29-24 | M24 |
V36 | U-V36-24 | M24 |
Arch type | Grip type | Rod 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.
Specifications | Value |
---|---|
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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