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.
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.
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.
DHD Shank
Model | Bit shank | L | φ | Spline | Air hole | Rec.hole size(mm) |
JS3.5B | BR33 | 165 | 54 | 7 | 2 | 90-105 |
JS3.5D | DHD3.5 | 181 | 54.6 | 8 | 2 | 90-105 |
JS4H | DHD340 | 209 | 65 | 8 | 2 | 105-130 |
JS5H | DHD350 | 260 | 84 | 8 | 2 | 140-152 |
JS6H | DHD360 | 308 | 101.5 | 8 | 2 | 152-190 |
JS8H | DHD380 | 350 | 128.5 | 10 | 2 | 203-245 |
TSK12H | DHD112 | 490 | 183 | 8 | 3 | 305-380 |
SD Shank
Model | Bit shank | L | φ | Spline | Air hole | Rec.hole size(mm) |
JS4S | SD4 | 260 | 67 | 8 | 2 | 105-130 |
JS5S | SD5 | 258 | 82.5 | 8 | 2 | 140-152 |
JS6S | SD6 | 324 | 102 | 8 | 2 | 152-190 |
JS8S | SD8 | 321 | 118 | 8 | 2 | 203-245 |
JS10S | SD10 | 355.8 | 164.5 | 8 | 2 | 245-305 |
JSK12S | SD12 | 470 | 185.5 | 8 | 3 | 305-380 |
MISSION Shank
Model | Bit shank | L | φ | Spline | Air hole | Rec.hole size(mm) |
JS3.5M | MISSION35 | 225 | 55 | 8 | 2 | 90-105 |
JS4M | MISSION40 | 228 | 68 | 12 | 2 | 105-130 |
JS5M | MISSION50 | 260 | 82.5 | 12 | 2 | 140-152 |
JS6M | MISSION60 | 231 | 106.5 | 12 | 2 | 152-190 |
JS8M | MISSION80 | 329 | 128.5 | 12 | 2 | 203-245 |
QL Shank
Model | Bit shank | L | φ | Spline | Air hole | Rec.hole size(mm) |
JS4X | QLX40 | 209.5 | 69 | 12 | 2 | 105-130 |
JS5L | QL50 | 240 | 88.5 | 12 | 2 | 140-152 |
JS6L | QL60 | 253 | 106 | 12 | 2 | 152-190 |
JS8L | QL80 | 331 | 136 | 16 | 2 | 203-245 |
TK12L | QL120 | 492 | 208.5 | 12 | 3 | 305-380 |
DHD Shank
Model | Bit shank | L | 中 | L1 | φ1 | Spline | Air hole | Rec.hole size(mm) |
JH3.5D | DHD3.5 | 181 | 54.6 | 54.6 | 24.5 | 8 | 2 | 90-105 |
JH4H | DHD340 | 209 | 65 | 59 | 27 | 8 | 2 | 105-130 |
JH5H | DHD350 | 260 | 84 | 56 | 35 | 8 | 2 | 140-152 |
JH6H | DHD360 | 308 | 101.5 | 55 | 38 | 8 | 2 | 152-190 |
JH8H | DHD380 | 350 | 128.5 | 51 | 50.6 | 10 | 2 | 203-245 |
JK12H | DHD112 | 490 | 183 | 52.2 | 63.2 | 8 | 3 | 305-380 |
SD Shank
Model | Bit shank | L | 中 | L1 | φ1 | Spline | Air hole | Rec.hole size(mm) |
JH4S | SD4 | 260 | 67 | 54 | 26 | 8 | 2 | 105-130 |
JH5S | SD5 | 258 | 82.5 | 54.5 | 32 | 8 | 2 | 140-152 |
JH6S | SD6 | 324 | 102 | 53 | 36.4 | 8 | 2 | 152-190 |
JH8S | SD8 | 321 | 118 | 57 | 41 | 8 | 2 | 203-245 |
JH10S | SD10 | 355.8 | 164.5 | 60.3 | 56 | 8 | 3 | 245-305 |
JK12S | SD12 | 470 | 185.5 | 48 | 63.2 | 8 | 3 | 305-380 |
QL Shank
Model | Bit shank | L | φ | L1 | φ1 | Spline | Air hole | Rec.hole size(mm) |
JH4X | QLX40 | 209.5 | 69 | 58 | 32.2 | 12 | 2 | 105-130 |
JH5L | QL50 | 240 | 88.5 | 52 | 38.5 | 12 | 2 | 140-152 |
JH6L | QL60 | 253 | 106 | 59 | 46 | 12 | 2 | 152-190 |
JH8L | QL80 | 331 | 136 | 54 | 54.6 | 16 | 2 | 203-245 |
TK12L | QL120 | 492 | 208.5 | 52.2 | 71.5 | 12 | 3 | 305-380 |
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.
NumaShank
Model | Bit shank | L | φ | L1 | φ1 | Spline | Air hole | Rec.hole size(mm) |
JH10N | NUMA100 | 375 | 165 | 53 | 54 | 10 | 3 | 245-305 |
TK12N | Numa120 | 490.5 | 191 | 56.5 | 75.6 | 12 | 3 | 305-380 |
TK12HN | Numa125 | 491 | 209 | 54 | 74.5 | 10 | 3 | 305-380 |
TK14 | TK14 | 520 | 235 | / | / | 10 | 3 | 400-500 |
TK18 | NUMA180 | 527.5 | 297 | 80.7 | 93.2 | 12 | 6 | 500-600 |
TK24 | TK24 | 560 | 380 | 80 | 118.2 | 14 | 6 | 600-800 |
TK28 | TK28 | 560 | 430 | 80 | 118.2 | 16 | 6 | 800-1150 |