Small Range - Rammer 255
Rammer’s Small range rockbreakers are designed to deliver high blow frequency and power where and when you need it regardless of the application. The Rammer 255, Rammer 355 and Rammer 455 are your no fuss, Plug and play solution for carriers between 1.2 and 5.2 tonne. Protected by their box type housing, these hammers produce less noise and vibration, whilst are strong enough to take a beating. Rammer’s plug and play theory makes installation quick and easy, and makes work with multiple carriers a dream.
Features
- Single lower tool bushing
- Membrane type accumulator
- Sound supressed
- CBE (Constant blow energy)
- No tie rods
- Light weight
Applications
- Primary Demolition
- Secondary Demolition
- Trenching
- Asphalt Cutting
- Ground Compacting
Specifications
| Weight | 88 kg | 190 lb |
| Working length | 842 mm | 33.1 in |
| Minimum working weight, flange mounted *1 | 110 kg | 240 lb |
| Impact rate (frequency) | 600 - 3200 bpm | |
| Operating pressure | 95 - 150 bar | 1380 - 2175 psi |
| Pressure relief min *2 | 150 - 200 bar | 2175 - 2900 psi |
| Pressure relief max | 220 bar | 3190 psi |
| Pressure in LP-circuit | 38 - 40 bar | 550 - 580 psi |
| Oil flow range | 15 - 35 l/min | 4.0 - 9.2 gal/min |
| Back pressure max | 20 bar | 290 psi |
| Input power | 8.8 kW | 12 hp |
| Tool diameter | 40 mm | 1.57 in |
| Pressure line connection (IN) | BSPP-internal 1/2" | |
| Return line connection (OUT) | BSPP-internal 1/2" | |
| Pressure line size *3 | 12 mm | 0.47 in |
| Return line size *3 | 12 mm | 0.47 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 | |
| Miniexcavator weight, optimum | 1.4 - 2.1 t | 3100 - 4600 lb |
| Miniexcavator weight, range *4 | 1.2 - 2.5 t | 2600 - 5500 lb |
| Skid steer, robot weight, optimum | 0.9 - 1.4 t | 2000 - 3100 lb |
| Skid steer, robot weight, range *4 | 0.8 - 1.7 t | 1800 - 3700 lb |
| Noise level, measured (2000/14/EC) | 115 dB(A) | |
| Noise level, guaranteed (2000/14/EC) | 119 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. |
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