rammer

2577

Rammer 2577 hydraulic hammers are suitable for carriers in the 23 to 28 tonne range. The 1,700 kg Rammer 2577 Rockbreaker with an impact rate of 450 to 750 blows per minute, features Rammer’s Fixed Blow Energy operating principle that ensures optimum impact energy with every blow, regardless of hydraulic flow fluctuations.

Features

  • 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
  • Idle blow protector (Optional)
  • Soft blow sensor (Optional)

Applications

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

Specifications

Weight 1460 kg 3220 lb
Working length 2299 mm 90.5 in
Minimum working weight, flange mounted  *1 1760 kg 3880 lb
Impact rate (frequency) 450 - 750 bpm
Operating pressure 135 - 145 bar 1960 - 2105 psi
Pressure relief min  *2 190 bar 2755 psi
Pressure relief max 220 bar 3190 psi
Oil flow range 140 - 200 l/min 37.0 - 52.8 gal/min
Back pressure max 10 bar 145 psi
Input power 48 kW 64 hp
Tool diameter 135 mm 5.31 in
Pressure line connection (IN) SAE 6000 psi 1 1/4"
Return line connection (OUT) SAE 6000 psi 1 1/4"
Pressure line size  *3 26 mm 1.02 in
Return line size  *3 32 mm 1.26 in
Grease connection BSPP-internal 3/8"
Air connection (A) BSPP-internal 3/8"
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 23 - 28 t 50700 - 61700 lb
Carrier weight, range  *4 21 - 30 t 46300 - 66100 lb
Noise level, measured (2000/14/EC) 120 dB(A)
Noise level, guaranteed (2000/14/EC) 124 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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