R38 90mm Self Drilling Anchor Drill Bit for Hard Rock

Introduction to SDAThe self-drilling hollow anchor system performs drilling, anchoring and grouting in one step. It allows air and water to freely pass through the bar during drilling to remove debris and then allows the grout to be injected immediately after completely covering the entire bolt.Features and AdvantagesNo predrillingRock at any depthCan be installed in all soil typesCasing for lateral loadsGrout and bar are installed simultaneouslyOnly need rock drill & grout plantMain Components:Self-drilling Anchor System Consists of:Steel Hollow BarSteel CouplerSteel PlateSteel NutSacrificical Drill BitTechnical Data SheetDrill Bit SelectionEXDescriptionA machined or cast hardened cross dirll bit.Suitable ConditionsA majority of applications for loose to medium dense ground conditions.EXXDescriptionThe tungsten carbide corss bit.Suitable ConditionsSuitable for soft to medium fractured rock formations.ESFDescriptionCast and hardened hemispherical button drill bit.Suitable ConditionsSuitable for silt, sand and gravel and soft rock formations.ESDDescriptionDrop center hardened button bit.Suitable ConditionsFor increased drilling efficiency of silt, sand and gravel with small boulders or soft rock.ESSFDescriptionTungsten carbide hemispherical button drill bit.Suitable ConditionsWith flat drill face for a large range of fractured ground, broken and medium rock formations.EWDescriptionClay drill bit.Suitable ConditionsCohesive mixed soils without obstructions.ECDescriptionHardened tri-cresent/arching drill bit.Suitable ConditionsSuitable for unconsolidated soil with small boulders.ECCDescriptionTungsten carbide tri-cresent/arching bit.Suitable ConditionsFor a range of soft to medium rock formations.EYDescriptionHardened tri-blade drill bit with a drop center buttons.Suitable ConditionsOffers an increased cutting performance in fills and chalk.EYYDescriptionTC drop centre bit with hardened tri-blade bit.Suitable ConditionsSuitable for soft to medium cemented ground conditions including fills and chalk.  Bit TypeDrill Bit DiametersR25R32R38R51T30T40T52T73T76T103EXφ42φ51φ51φ76φ90φ76φ90φ100φ90φ115φ42φ46φ51φ76φ76φ90φ100φ115φ115φ130φ170φ130φ170-EXXφ42φ51φ51φ76φ90φ76φ90φ100φ90    φ100 φ115   φ130φ150φ42φ46φ51φ76     φ90φ100  φ115φ130  φ150φ115φ130φ150φ130φ150φ200φ130φ150φ200φ175ESFφ42φ51φ51φ76φ76φ90φ100φ90φ110φ42φ46φ51φ76     φ90φ100  φ115φ130  ----ESD--φ115φ115--φ115φ130φ130φ170-ESSFφ42φ51φ51φ76φ90φ76φ90φ100φ115φ90    φ100 φ115   φ130φ150φ46φ51φ70     φ76φ90     φ100φ115   φ130φ100φ115φ110φ130φ120φ130φ150φ175EW-φ76φ90φ76     φ90φ100  φ110φ115  φ130φ150   φ130φ150φ175φ76φ90φ90φ130φ150φ130φ150φ130φ150φ130φ150φ220φ280EC-φ51φ76φ76φ90φ115φ115φ51φ90φ115----ECC-φ51φ76φ76φ90φ110φ115φ115φ51φ90φ100φ115----EY-φ76φ90φ76φ90φ130φ115------EYY-φ76φ90φ76φ90φ130φ115------  /* March 10, 2023 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1