2577 PRO
2577 PRO
The Rammer 2577 PRO is suitable for carriers in the 23 to 34 tonne range. The 1,940 kg hammer has been designed based on the field proven Rammer 2577 and shares with it many key features that have established that unit as one of the most popular hammers in the world. These standard Rammer 2577 features are backed by a range of enhancements that help the 2577 PRO withstand extreme working conditions. The unit benefits from a sealed housing structure that prevents the ingress of dust and dirt, thereby extending the working life of both the hammer and the tool. A top cover plate has sealed through apertures for stump hydraulic hoses and features sealed hose connections for grease, air and water. The Rammer 2577 PRO has a sturdy housing design and wear resistant wear plates that make it perfect for horizontal working duties in applications such as tunneling.2577 PRO
Features
- High pressure membrane accumulator
- Indexable power cell (left or right handed)
- PRO / Tunnel housing
- Optimized hydraulic connection points towards carrier
- PRO / Tunnel suspension
- FBE (Fixed Blow Energy)
- PRO / Tunnel powercell
- RamValve
- Idle blow protector
- VIDAT tie rods
- RAMLUBE I (optional)
- Factory Installed Ramdata II
- Ramair (optional)
- AGW (optional)
- RAMMER Water-Jet (dust suppression)
Applications
- Primary demolition
- Hammer tunneling
- Recycling
Specification
| Minimum working weight, flange mounted *1 | 1940 kg | 4280 lb |
| Weight | 1660 kg | 3660 lb |
| Impact rate (frequency) | 450 – 750 bpm | |
| Operating pressure | 135 – 145 bar | 1960 – 2105 psi |
| Oil flow range | 140 – 200 l/min | 37.0 – 52.8 gal/min |
| Pressure relief setting *2 | 190 bar | 2755 psi |
| Pressure relief max | 220 bar | 3190 psi |
| Back pressure max | 10 bar | 145 psi |
| Input power | 48 kW | 64 hp |
| Tool diameter | 135 mm | 5.31 in |
| Pressure line connection (IN) | ORFS ISO 8434-3 ( 1 11/16-12 UN ) | |
| Return line connection (OUT) | ORFS ISO 8434-3 ( 1 11/16-12 UN ) | |
| 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″ | |
| Water connection | BSPP-internal 1/2″ | |
| 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 – 28 t | 50700 – 61700 lb |
| Carrier weight, range *3 | 23 – 34 t | 50700 – 75000 lb |
| Noise level, measured (2000/14/EC) | 119 dB(A) | |
| Noise level, guaranteed (2000/14/EC) | 123 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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