RMT 658 is the most popular handheld rock drill (Jack Hammer) globally. In relation to weight, this rock drill delivers a very high penetration rate at very low air consumption. Mostly used in Quarry work, Blast hole drilling, Tunneling, construction sites, etc. With H22 integral / extension steels, this pneumatic rock drill can drill up to 6 meters with 27-40 mm dia holes. If you prefer a lighter version in Rock Drills, then you can look for RMT 571.
| Model # | RMT 658 | |
| Weight | 24 kg | 53 lb |
| Length | 565 mm | 22.2" |
| Hole range | 27 mm - 40 mm | 1.06" - 1.57" |
| Hole depth | 6 metres | 19.6 ft |
| Air pressure | 6 bar | 87 psi |
| Air consumption | 58 l/s | 123 cfm |
| Blow per minute | 2040 | |
| Revolution | 215 rpm | |
| Piston dia | 65 mm | 2.56" |
| Piston stroke | 59 mm | 2.32" |
| Air inlet (BSP) | 19 mm | ¾" |
| Shank size - 8311 0301 86 | 22 x 108 mm | ⁷/₈" x 4¼" |
| Manufacturer | RMT | |
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