Below is a presentation of Sandvik's models of DTH hammers.
Models
RH460 hammers
The complete RH460 series of hammers for down-the-hole drilling will consist of 5 standard size hammers from 3 1/2"– 8". The 5" and 5" G begin the introduction of the new RH460 with the 4" becoming available during the second half of 2013. Then to be followed by the remaining sizes. All versions of hammers are designed to utilize bits with generic shank types.
| Model | Size(inch) | Weight kg (lb) | Outside diam. mm (inch) | Hammer length mm (inch) | Op pressure psi (bar) |
|---|---|---|---|---|---|
| RH460 | 5" | 67 (150) | 120 (4.72) | 1067 (42.01) | 150-350 (10-24) |
| RH460g | 5" | 75 (170) | 126 (4.96) | 1067 (42.01) | 150-350 (10-24) |
RH550 hammers
| Model | Size(inch) | Weight kg (lb) | Outside diam. mm (inch) | Hammer length mm (inch) | Op pressure psi (bar) |
|---|---|---|---|---|---|
| RH550r | 3" | 25 (55) | 81.3 (3.2) | 823 (32.4) | 150-350 (10-24) |
| RH550r | 4" | 38 (83) | 98 (3.86) | 914 (36) | 150-350 (10-24) |
| RH550 | 5" | 68 (145) | 120 (4.72) | 987 (38.86) | 150-350 (10-24) |
| RH550g | 5" | 73 (160) | 126 (5.0) | 987 (38.86) | 150-350 (10-24) |
| RH550r | 5" | 73 (160) | 126 (5.0) | 987 (38.86) | 150-350 (10-24) |
| RH550w | 6" | 72 (158) | 142 (5.6) | 922 (36.3) | 150-350 (10-24) |
| RH550 | 6" | 72 (158) | 142 (5.6) | 922 (36.3) | 150-350 (10-24) |
| RH550g | 6" | 82 (180) | 150 (5.9) | 922 (36.3) | 150-350 (10-24) |
| RH550r | 6" | 82 (180) | 150 (5.9) | 922 (36.3) | 150-350 (10-24) |
| RH550r | 8" | 173 (380) | 181 (7.12) | 1219 (48) | 150-350 (10-24) |
| RH550w | 8" | 173 (380) | 181 (7.12) | 1270 (50) | 150-350 (10-24) |