En
Down-the-hole (DTH) hammers are precision-engineered pneumatic tools designed for deficient rock drilling in mining, construction, and geotechnical applications. These hammers operate by forcing compressed air down the drill string to the hammer, where it energizes a piston delivering powerful blows to the drill bit, facilitating fast and effective penetration into hard rock formations.
JS DTH hammer without foot valve is a new high pressure hammer developed by our company.
Features
1.Simple structure ensures easy maintenance and reliability.
2.Optimized design maximizes energy output.
3.High impact power and frequency design ensures smooth operation,drill speeds 10%-15%higher than foot valve types.
4.Bits are valveless to prevent the issue of foot valve breakage.
5.All critical internal components under strict heat treatment to maximize tool longevity.
| Hammer mode | Dth bit shank | Foot valve | Thread connection | Hammer OD(mm) | Rec.hole size(mm) | Length without bit(mm) | Piston (kg) | Hammer weight(kg) | Working pressure(bar) |
| JS3.5B | BR33 | No | API23/8"REG pin | 80 | 90-105 | 847 | 4.1 | 24.0 | 14-20 |
| JS3.5D | DHD3.5 | No | API 23/8"REG pin | 80 | 90-105 | 863 | 4.1 | 24.0 | 14-20 |
| JS4H | DHD340 | No | API 23/8"REG pin | 99 | 105-130 | 967 | 8.7 | 40.0 | 16-25 |
| JS4S | SD4 | No | API23/8"REG pin | 99 | 105-130 | 998 | 8.7 | 40.0 | 16-25 |
| JS4M | M40 | No | API23/8"REG pin | 99 | 105-130 | 986 | 8.7 | 41.0 | 16-25 |
| JS4X | QLX40 | No | API23/8"REG pin | 99 | 105-130 | 967.5 | 8.7 | 40.0 | 16-25 |
| JS5H | DHD350 | No | API23/8“orAPI31/2” | 126 | 140-152 | 1089 | 14.8 | 69.5 | 16-28 |
| JS5S | SD5 | No | API23/8“or API31/2” | 126 | 140-152 | 1089 | 14.8 | 69.8 | 16-28 |
| JS5M | M50 | No | API23/8“orAPI31/2” | 126 | 140-152 | 1089 | 14.8 | 68.8 | 16-28 |
| JS5L | QL50 | No | API23/8"orAPI31/2" | 126 | 140-152 | 1089 | 14.8 | 70.0 | 16-28 |
| JS6H | DHD360 | No | API31/2"REG pin | 148 | 155-190 | 1163.5 | 23.3 | 101.5 | 16-30 |
| JS6S | SD6 | No | API31/2"REG pin | 148 | 155-190 | 1180 | 23.3 | 99 | 16-30 |
| JS6M | M60 | No | API31/2"REG pin | 148 | 155-190 | 1087 | 23.3 | 100 | 16-30 |
| JS6L | QL60 | No | API31/2"REG pin | 148 | 155-190 | 1161 | 23.3 | 105 | 16-30 |
| JS8H | DHD380 | No | API41/2"REG pin | 185 | 203-245 | 1365 | 42.5 | 195 | 16-30 |
| JS8S | SD8 | No | API41/2"REG pin | 185 | 203-245 | 1333 | 42.5 | 195 | 16-30 |
| JS8M | M80 | No | API41/2"REG pin | 185 | 203-245 | 1342 | 42.5 | 193 | 16-30 |
| JS8L | QL80 | No | API41/2"REG pin | 185 | 203-245 | 1283 | 42.5 | 192 | 16-30 |
| JS10N | Numa100 | No | API51/2"or API65/8" | 225 | 245-305 | 1492 | 70.5 | 295 | 16-35 |
| JS10S | SD10 | No | API51/2"orAPI65/8" | 225 | 245-305 | 1490 | 70.5 | 293 | 16-35 |
Notice: There is a chance that SHANDIKE may make changes on above-mentioned information. Product pictures and parameters about models, data, performances and specifications on this website are for reference only.
