Product Weight


Product Carrier Weight
34-55 t


Oil Flow Range
250-350 l/min

The use of advanced hydraulics, materials technology, strength calculations, impact wave theory and production technology has enabled Rammer to create hydraulic hammers that are powerful, durable, cost-effective and the undisputed leaders in their class.

Rammer 4099 has been designed using a revolutionary new operating principle that combines stroke length, blow energy and Rammer’s idle blow protector, allowing the hammer to be adjusted to match individual carriers and applications, improving hydraulic efficiency and safety.



  • Membrane type accumulator
  • Twin-handed
  • Sound suppressed
  • FBE (Fixed blow energy)
  • Lifetime warranty
  • Ramlube I (Optional)
  • Ramlube II (Optional)
  • VIDAT tie rods
  • Heavy duty housing (Optional)
  • Idle blow protector (Optional)
  • Stroke selector
  • RamValve


  • Primary Demolition
  • Boulder Breaking
  • Trenching
  • Secondary Demolition
  • Tunneling
  • Primary Breaking

Compatible with Standard Chisel Tool, Hard Rock Chisel Tool, Limestone Chisel Tool, Moil Point Tool, Pyramid Tool, Standard Blunt Tool, Super Blunt Tool, Ramlube l, Ramlube ll, Ramair, Ramdata ll, Special Tool Grease and Special Tool Grease cartridge for Ramlube ll.

  Metric Imperial
Weight 2800 kg 6170 ib
Working Length 2962 mm 116.6 in
Minimum working weight, flange mounted *1 3380 kg 7450 lb
Impact rate, long stroke 400-560 bpm  
Impact rate, short stroke 520-700 bpm  
Operating pressure 150-160 bar 2175-2320 psi
Pressure relief min *2 210 bar 3045 psi
Pressure relief max 230 bar 3335 psi
Oil flow range 250-350 l/min 66.0-92.5 gl/min
Back pressure max 12 bar 175 psi
Input power 93 KW 125 hp
Tool diameter 166 mm 6.54 in
Pressure line connection (IN) SAE 6000 psi 1 1/4 in  
Return line connection (OUT) SAE 6000 psi 1 1/4 in  
Grease connection BSPP-internal 3/8 in  
Air connection (A) BSPP-internal 3/8 in  
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 37-50 t 81600-110200 lb
Carrier weight, range *4 34-55 t 75000-121300 lb
Noise level, measured (2000/14/EC) 126 dB(A)  
Noise level, guaranteed (2000/14/EC) 130 dB(A)  

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