DTH(down the hole)Bits

SHANDIKE has a comprehensive range of DTH drill bits to match all conceivable applications. Each bit is made from quality alloy steel, , heat treated to the required hardness, given surface compression for fatigue resistance, and fitted with precision buttons manufactured in-house.

  • Raw material: premium quality nickel-alloy steel 23CrNi3Mo and YK 05 tungsten carbide
  • Shank types: DHD, COP,Mission, QL, SD etc.
  • Bit head shape: Drop Center Bit, Concave Face, Convex Face, Double Guage Face, Flat Face Bit.
  • Rock Applications: very hard and abrasive rock formation, medium-hard and homogeneous formation, soft rock and fissured rock formations
  • Over 15 years experience in rock drilling TooLS industry.
  • Shandike only uses high-quality raw materials.
  • We set up our products standard matched with world leading brands.
  • Advanced processing equipment extends the service life of products.

Selecting the Right Bit

DTH (down-the-hole) drilling involves a drilling hammer at the bottom of a drill string, the hammer is powered by compressed air transmitted via drilling rod to drive piston and produce impact power, which is then delivered into rocks for drilling and crushing. DTH drilling can be applied in mining, quarrying, water well drilling, foundation piling, etc.

DTH Bits

Features

1.Enhanced fatigue strength through advanced forging technology.
2.High quality carbide in optimal sizes for stable longevity.
3.Precision inlaying technology prevents carbide detachment.
4.State of the art heat treatment ensures superior hardness and wear resistance.
5.Tailored design and specialized processing for extended service life across various rock formations.

Bit Face Shape Selection

Button Shape Selection

DHD Shank

ModelBit shankLφSplineAir holeRec.hole size(mm)
JS3.5BBR33165547290-105
JS3.5DDHD3.518154.6 8 290-105
JS4HDHD3402096582105-130
JS5HDHD3502608482140-152
JS6HDHD360308101.582152-190
JS8HDHD380350128.510 2203-245
TSK12HDHD11249018383305-380

SD Shank

ModelBit shankLφSplineAir holeRec.hole size(mm)
JS4SSD42606782105-130
JS5SSD525882.5 82140-152
JS6SSD632410282152-190
JS8SSD832111882203-245
JS10SSD10355.8164.582245-305
JSK12SSD12470185.583305-380

MISSION Shank

ModelBit shankLφSplineAir holeRec.hole size(mm)
JS3.5MMISSION35225558290-105
JS4MMISSION4022868122105-130
JS5MMISSION5026082.5122140-152
JS6MMISSION60231106.5122152-190
JS8MMISSION80329128.5122203-245

QL Shank

ModelBit shankLφSplineAir holeRec.hole size(mm)
JS4XQLX40209.569122105-130
JS5LQL5024088.5122140-152
JS6LQL60253106122152-190
JS8LQL80331136162203-245
TK12LQL120492208.5123305-380

DHD Shank

ModelBit shankLL1φ1SplineAir holeRec.hole size(mm)
JH3.5DDHD3.518154.654.624.58290-105
JH4HDHD34020965592782105-130
JH5HDHD350260845635 82140-152
JH6HDHD360308101.5553882152-190
JH8HDHD380350128.55150.6102203-245
JK12HDHD11249018352.263.283305-380

SD Shank

ModelBit shankLL1φ1SplineAir holeRec.hole size(mm)
JH4SSD426067542682105-130
JH5SSD525882.554.53282140-152
JH6SSD63241025336.482152-190
JH8SSD8321118574182203-245
JH10SSD10355.8164.560.35683245-305
JK12SSD12470185.54863.283305-380

QL Shank

DTH BIT
ModelBit shankLφL1φ1SplineAir holeRec.hole size(mm)
JH4XQLX40209.5695832.2122105-130
JH5LQL5024088.55238.5122140-152
JH6LQL602531065946122152-190
JH8LQL803311365454.6162203-245
TK12LQL120492208.552.271.5123305-380

Features
◆Military grade special steel minimizes breakage and cracking failures.
◆Advanced forging process enhances the fatigue strength of the drill bit steel body.
◆Ultrasonic and magnetic particle flaw detection identify and eliminate material and forging defects, reducing potential quality issues during drilling.
◆Larger carbides extend the service life of the drill bit
◆CNC machining ensures precise dimensions of the drill bit.
◆Specially designed foot valve provides high strength and toughness, ensuring reliable performance.
◆Shock absorbing plastic pin enhances the service life of the shank spline.

DTH Bits

NumaShank

DTH Bits
ModelBit shankLφL1φ1SplineAir holeRec.hole size(mm)
JH10NNUMA1003751655354103245-305
TK12NNuma120490.519156.575.6123305-380
TK12HNNuma1254912095474.5103305-380
TK14TK14520235//103400-500
TK18NUMA180527.529780.793.2126500-600
TK24TK2456038080118.2146600-800
TK28TK2856043080118.2166800-1150

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