Expension Shell Bolt
Manufactured from high strength full thread bar with a hot forged integral head on one end and the other end has expansion shell.
Expension Shell Bolt
Manufactured from high strength full thread bar with a hot forged integral head on one end and the other end has expansion shell.
Applications
Product Introduction
Key Features
1. Manufactured from high strength full thread bar with a hot forged integral head on one end and the other end has expansion shell.
2. Available in left-hand or right-hand thread.
3.Fast and easy installation by mechanized tools.
4. Provide the same tensile strength on the entire length.
5. Expansion shell bolt with integral head, they are suitable for use in areas where roof is low or when long bolts tails are undesirable.
6. Nominal diameter 16mm/18mm/20mm can be supplied.
7. Corrosion protection may be provided by hot dip galvanizing or thermal diffusion.
Technical conditions of the Expansion shell bolt 16mm
Nominal diameter 16mm
Tensile strength Minimum 100kN
Square forged head
Forged head must be reused with 340Nm bolt
Expansion Shell Design
Length: 100-130mm
Length of the ribbed leaf: 75mm Min
Expansion shell diameter 38mm to suit for borehole with 40-44mm diameter
Expansion shell must afford screwing for the whole length of bolt
Mechanical strength of the expansion shell: 90kN Min
Torque of roof support tightening: 250-350N.m
How to work
After inserting the bolt into the drilling hole,rotate the pin nut and the pin nut drives the bar into the plug.The plug expands the three steel leaves,which leads to an expansion friction strength.
Accessories
Bearing Plate, Expansion Shell.
Length and Package
Length: 450-3000mm as specified.
Package: 100pcs-300pcs per bundle as specified.