Rammer 2155 embrases the very latest in hydraulic hammer design with it's slim body, robust housing made of wear resistant steel, a replaceable bottom plate etc. A key feature of the 2155 is its new design that provides its user exceptional flexibility to match the hammer precisely to their application and material requirements by choosing from a range of options as “retrofit”.


  • Membrane type accumulator
  • Twin-handed
  • Sound supressed
  • FBE (Fixed blow energy)
  • Lifetime warranty
  • Safety valve (Optional)
  • Ramlube I (Optional)
  • Ramlube II (Optional)
  • VIDAT tie rods
  • Heavy duty set (Optional)


  • Primary Demolition
  • Secondary Demolition
  • Boulder Breaking
  • Trenching
  • Metallurgical industry


Weight 1040 kg 2290 lb
Working length 2198 mm 86.5 in
Minimum working weight, flange mounted  *1 1240kg 2730 lb
Impact rate (frequency) 490 - 780 bpm
Operating pressure 140 - 160 bar 2030 - 2320 psi
Pressure relief min  *2 220 bar 3190 psi
Pressure relief max 240 bar 3480 psi
Oil flow range 120 - 180 l/min 31.7 - 47.6 gal/min
Back pressure max 10 bar 145 psi
Input power 48 kW 64 hp
Tool diameter 118 mm 4.65 in
Pressure line connection (IN) ORFS ISO 8434-3 (1 11/16-12 UN )
Return line connection (OUT) ORFS ISO 8434-3 (1 11/16-12 UN )
Pressure line size  *3 26 mm 1.02 in
Return line size  *3 26 mm 1.02 in
Grease connection Tema 2520
Optimum oil temperature 40 - 60 °C 104 - 140 °F
Allowed oil temperature range -20 - 80 °C -4 - 176 °F
Optimum oil viscosity at operating temperature 30 - 60 cSt
Allowed viscosity range 20 - 1000 cSt
Carrier weight, optimum  *4 19 - 22 t 41900 - 48500 lb
Carrier weight, range  *4 16 - 26 t 35300 - 57300 lb
Noise level, measured (2000/14/EC) 124 dB(A)
Noise level, guaranteed (2000/14/EC) 128 dB(A)
*1   Includes average mounting bracket and standard tool
*2   Minimun setting = actual operating pressure + 50 bar or 725 psi
*3   minimum inner diameter
*4   Check carrier allowed attachment weight from carrier manufacturer. Check application requirements.


More Information

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