The JH DTH hammer with foot valve is a new high pressure hammer developed by our company.
| 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) |
|---|---|---|---|---|---|---|---|---|---|
| 3.5" Hammer | |||||||||
| JH3.5D | DHD3.5 | Yes | API 2 3/8" REG pin | 80 | 90-105 | 863 | 4.1 | 23 | 14-20 |
| 4" Hammer | |||||||||
| JH4H | DHD340 | Yes | API 2 3/8" REG pin | 99 | 105-130 | 952 | 9.4 | 38 | 16-25 |
| JH4S | SD4 | Yes | API 2 3/8" REG pin | 99 | 105-130 | 998 | 9.4 | 38.8 | 16-25 |
| JH4X | QLX40 | Yes | API 2 3/8" REG pin | 99 | 105-130 | 950 | 9.4 | 37 | 16-25 |
| 5" Hammer | |||||||||
| JH5H | DHD350 | Yes | API 2 3/8" or API 3 1/2" | 126 | 140-152 | 1070 | 15.5 | 68.5 | 16-28 |
| JH5S | SD5 | Yes | API 2 3/8" or API 3 1/2" | 126 | 140-152 | 1070 | 15.5 | 69.4 | 16-28 |
| JH5L | QL50 | Yes | API 2 3/8" or API 3 1/2" | 126 | 140-152 | 1069 | 15.5 | 69 | 16-28 |
| 6" Hammer | |||||||||
| JH6H | DHD360 | Yes | API 3 1/2" REG pin | 148 | 155-190 | 1163 | 25.4 | 101.5 | 16-30 |
| JH6S | SD6 | Yes | API 3 1/2" REG pin | 148 | 155-190 | 1180 | 25.4 | 99 | 16-30 |
| JH6L | QL60 | Yes | API 3 1/2" REG pin | 148 | 155-190 | 1109 | 25.4 | 98 | 16-30 |
| 8" Hammer | |||||||||
| JH8H | DHD380 | Yes | API 4 1/2" REG pin | 185 | 203-245 | 1305 | 42 | 173 | 16-30 |
| JH8S | SD8 | Yes | API 4 1/2" REG pin | 185 | 203-245 | 1273 | 42 | 173 | 16-30 |
| JH8L | QL80 | Yes | API 4 1/2" REG pin | 185 | 203-245 | 1285 | 42 | 180 | 16-30 |
| 10" Hammer | |||||||||
| JH10N | Numa100 | Yes | API 5 1/2" or API 6 5/8" | 225 | 245-305 | 1522 | 73 | 302 | 16-35 |
| JH10S | SD10 | Yes | API 5 1/2" or API 6 5/8" | 225 | 245-305 | 1503 | 73 | 295 | 16-35 |
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