ZJS self-propelled rock bolt

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Brief Introduction 1. very strong hardness 2.easy to use 3.best price Detail Introduction ZJS25 self-propelled rock bolt 1. Alloy bit: made by high quality alloy precision process, has the very strong hardness and toughness, penetrating power can make the anchor rod drilling in many kind of surrounding rock 2. Anchor body: assembly, one of the most important components in the drilling and anchorage plays a main role 3. Connection: set connection role when anchor should be extended 4. Plate: able to withstand greater stress of surrounding rock 5. Nut: to surrounding rock stress concentration on the plate Technical parameters Model ZJS25 ZJS27 ZJS28 ZJS32 ZJS38 ZJS51 External diameter(mm) 25 27 28 32 38 51 Strength of extension(MPa) ≥650 ≥650 ≥650 ≥650 ≥650 ≥650 Tooth height(mm) 1.5±0.1 Screw pitch(mm) 12.7±0.1 Thread direction levorotation Standard length(m) 2.0 3.0 3.5 4.0 4.5 5 6 Error in length ±1% Maximum drilling depth More than 12 m.

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jining hengwang mining machinery co.ltd

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