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Technical Specification

Model # RMT 658
 Technically Equivalent To RH 658 of Atlas Copco
 Weight 24 kg 53 lb
 Length 565 mm 22.25”
 Air Consumption 58 l/s 123 cfm
 Chuck / Shank Size  22 x 108 mm 7⁄8″ x 4¹⁄4″
 Blows Per Minute 2100
 Hose Connection  19 mm  3/4″
 Piston Dia 65 mm 2¹⁄2”
 Stroke  59 mm  2.32″
 Air Pressure 6 bar (87 PSI)
RMT 658

RMT 658 is the most popular hand held rock drill (Jack Hammer), globally. In relation to weight, it delivers 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, it can drill up to 6 meter with 27-40 mm dia hole.

What is good about it
  • Rifle Bar rotation mechanism and high impact energy
  • Suitable for deeper drilling
  • Robust kick Latch retainer
  • High penetration in soft to hard rock at low air pressure
  • Spare parts consumption is low
Where it is used
  • Quarry work
  • Blast hole drilling
  • Tunneling
  • Construction sites