Rammer 2577E hydraulic hammer is suitable for carriers in the 21 to 30 tonne range. The 1,700 kg hammer with an impact rate of 450 to 750 blows per minute features Rammer’s Fixed Blow Energy operating principle which ensures optimum impact energy with every blow, regardless of hydraulic flow fluctuations. The Rammer 2577E comes with the remote monitoring hardware RD3 installed.

SPECIFICATION

Minimum working weight, flange mounted  *1 1760 kg 3880 lb
Weight 1460 kg 3220 lb
Working length 2299 mm 90.5 in
Impact rate (frequency) 450 – 750 bpm
Operating pressure 135 – 145 bar 1960 – 2105 psi
Pressure relief setting  *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, min. inner diameter 26 mm 1.02 in
Return line size, min. inner diameter 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 23 – 30 t 50700 – 66100 lb
Carrier weight, range  *3 21 – 32 t 46300 – 70500 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   Minimum setting = actually measured operating pressure + 50 bar or 725 psi
*3   Check carrier allowed attachment weight from carrier manufacturer. Check application requirements.

Specifications are subject to change without notice (Thursday, April 11, 2019)