Factory Direct Sale High Quality Hard Drilling Bits Cones Rotary Tools Rock Drill Head Roller Cone Bit

Product Description8 1/2  IADC637 Roller Cones for Piling/Drum  Basial Specification IADC Code117,127,126,217417,437,517,537617,627,637,737Bit Size7 1/2'',8 1/2''9 7/8'',12 1/4''Tooth Typewide teeth,chisel insertBit Weight18kgMeterialtungsten carbide insert,inlaid friction-reducing alloyBearingMetal sealed bearingRubber sealed bearingLubrication and seal Adopt advanced grease Pressure control systemThe advanced compensatorThrust facesHardfaced with wear resistant alloyNozzlesThree nozles,Center nozzle can be customizedGauge protectionOn the Shirttail:More carbide inserts increase gauge holding capability and bearing life  Recommended Drilling ParametersIADCWOB(kn/mm)RPM(r/min)Formations1170.30-0.753180-60very soft formation with low compressive strenght and high drillability,such as caly,mudstone,chalk,etc.1270.30-0.85180-60soft formation with low compressive strength and high drillability,such as mudstone,gypsum,soft limestone,etc.2170.35-0.95150-60soft to medium hard formations with high compressive strength,such as medium soft shale,sandstone,limestone,etc.4370.35-0.9240-70soft formation with low compressive strenght and high drillability,such as caly,mudstone,chalk,soft limestone,etc.5170.35-1.0140-60medium soft formation with low compressive strength and high drillability,such as mudstone,sandstone,shale,etc.5370.45-1.0120-50medium soft to medium hard formation with low compressive strength,such as medium shale,sandstone,medium limestone,etc.6170.45-1.190-50medium hard to hard formation witj high compressive strength,such as hard shale,limestone,dolomite,etc.6370.5-1.280-40hard to very hard formation with high compressive strength,such as hard limestone,dolomite,marble,etc.NOTE the upper limits of WOB and RPM in above table should not be used simultaneously  Countries that our company have already exported:United States, Australia, Costa Rica, Guatemala, Azerbaijan, Congo, Myanmar, Peru, Singapore, Oman, Indonesia, Philippines, India, Switzerland, Ukraine, Turkey, Bolivia, Romania, Kenya, Vietnam, South Africa, Kuwait, Mozambique, Ecuador, France.ExhibitionCertificatesPackaging & ShippingFAQ1. How to get an exact quotation?Answer: Please send us detailed information as below:-Tricone bits(Diameter, IADC code)-PDC bits(Matrix or Steel body, blades quantity, cutter size, etc)-Hole opener(Diameter, size of pilot hole, hardness of rocks, thread connection of your drill pipe, etc.)-Roller cutters(Diameter of cones, model number, etc.)A simple way is sending us photos .Besides above, if possible please provide more information as below:Drilling depth in vertical well drilling, Drilling length in HDD, hardness of rocks, Capacity of drill rigs, application(oil/gas well drilling, or water well drilling, or HDD, or foundation).Incoterm: FOB or CIF or CFR, by plane or ship, port of destination/discharge.The more information provided, the more exact quotation will be offered.2. About lead time,payment terms, delivery ?Answer: We always have regular models available in stock, prompt delivery is one of our advantages. Mass production depends on quantity of order.We accept all regular payment terms including L/C, T/T, etc.We are near from Beijing airport and Tianjin(Xingang) seaport, transportation from our factory to Beijing or Tianjin only takes one day, fast and very economical inland charges./* 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