Rammer 555E has been designed for the toughest of applications. The 320 kg hammer is suitable for carriers in the 1.9 to 8.0 tonne range.
High-Performance Excellence Line
Heavy Duty Small 777E Hammer
Robust, Fast, High-Performance
Heavy-duty Rammer 777E has been made for demanding conditions. The 415 kg hammer is suitable for carriers in the 2.6 to 9.5 tonne range. Robust housing withstand wear and no-tie-rods enables fast and easy servicing. Twin handed design allows optimal mounting on both left and right-handed carriers, prolonging the service life of the hose connections. The Rammer 777E Heavy Duty Small hydraulic hammer comes with remote monitoring device RD3 installed.
Key Features
Key Applications
Primary demolition, Secondary demolition, Recycling, Boom mounted applications, Trenching, Landscaping, Cutting of asphalt or frozen ground, Ground compacting, Metallurgical industry
Specifications
| Minimum working weight, flange mounted *1 | 415 kg | 915 lb |
| Weight | 340 kg | 750 lb |
| Working length | 1449 mm | 57.0 in |
| Impact rate (frequency) | 500 – 1700 bpm | |
| Operating pressure | 90 – 140 bar | 1305 – 2030 psi |
| Oil flow range | 40 – 120 l/min | 10.6 – 31.7 gal/min |
| Pressure relief setting *2 | 140 – 190 bar | 2030 – 2755 psi |
| Pressure relief max | 220 bar | 3190 psi |
| Pressure in LP-circuit | 36 – 38 bar | 520 – 550 psi |
| Back pressure max | 20 bar | 290 psi |
| Input power | 28 kW | 38 hp |
| Tool diameter | 80 mm | 3.15 in |
| Pressure line connection (IN) | BSPP-internal 3/4″ | |
| Return line connection (OUT) | BSPP-internal 3/4″ | |
| Pressure line size, min. inner diameter | 19 mm | 0.75 in |
| Return line size, min. inner diameter | 19 mm | 0.75 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 | |
| Skid steer, robot weight, optimum | 3.3 – 5.2 t | 7300 – 11500 lb |
| Skid steer, robot weight, range *3 | 2.6 – 6.3 t | 5700 – 13900 lb |
| Miniexcavator, tractor backhoe weight, Optium | 4.9 – 7.8 t | 10800 – 17200 lb |
| Miniexcavator, tractor backhoe weight, Range *3 | 4.3 – 9.5 t | 9500 – 20900 lb |
| Noise level, measured (2000/14/EC) | 130 dB(A) | |
| Noise level, guaranteed (2000/14/EC) | 134 dB(A) | |
*1 Includes average mounting bracket and standard wear parts
*2 Minimum setting = actually measured operating pressure + 50 bar or 725 psi
*3 Check carrier allowed attachment weight from carrier manufacturer. Check application requirements.
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