Tubular Friction Bolt
Technical DataTFN33TFN39TFN47Mass1.68kgs/m1.96kgs/m2.87kgs/mDrill Hole Diameter28-32mm35-38mm42-46mmMinimum Yield Strength80kn90kn120knTypical Yield Strength100kn115kn160knMinimum Tensile Strength100kn115kn165knTypical Tensile Strength120kn130kn180knElongation≥16%≥16%≥16%Typical Anchorage25-47kn27-53kn35-67knFeature and advantages of tubular friction bolt 1.tubular friction bolt is formed from high strength steel band with one end tapered tip for easy insertion into a drill hole,Website:, the other end has a welded ring for holding the bearing plate.2.Effectively used as rock bolt for strata support and miner safety.3.No cement grout and resin cartridge needed.4.tubular friction bolt is available in 3 sizes: 33mm, 39mm, 47mmInstallation procedure1.Drill hole at proper diameter and depth. Diameter is determined by on-site testing.2.Insert friction bolt into the hole. A driving tool is fitted into the rock drill’s chuck. Place friction bolt and plate onto the installation tool.3.Using percussion and thrust, fully drive the friction bolt into the hole until the dome plate is tight against the rock surface.
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