Rammer's 777 heat resistant hydraulic hammer, has been designed to withstand the toughest of applications that this size of hammers may be utilized in. Heat resistant seals and heavy duty housing protect vital components and ensure that no job is too tough.
Features
- Single lower tool bushing
- Membrane type accumulator
- Twin-handed
- No tie rods
- CBE+ (Constant blow energy plus)
- Flange mounting
- Heavy Duty Housing
- Heat Resistant Seals
Applications
- Metallurgical industry
Compatible with Standard Chisel Tool, Moil Point Tool, Asphalt Cutting Parallel Tool, Asphalt Cutting Traverse Tool, Compacting Plate Tool and Special Tool Grease.
| Metric | Imperial | |
|---|---|---|
| Weight | 315 kg | 690 lb |
| Working Length | 1449 mm | 57.0 in |
| Minimum working weight, flange mounted *1 | 385 kg | 850 lb |
| Impact rate (frequency) | 500-1700 bpm | |
| Operating pressure | 90-40 bar | 1305-2030 psi |
| Pressure relief min *2 | 140-190 bar | 1305-2030 psi |
| Pressure relief max | 220 bar | 3190 psi |
| Pressure in LP-circuit | 36-38 bar | 520-550 psi |
| Oil flow range | 40-120 l/min | 106-31.7 gal/min |
| 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 in | |
| Return line connection (OUT) | BSPP-internal 3/4 in | |
| Pressure line size *3 | 19 mm | 0.75 in |
| Return line size *3 | 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 | |
| Miniexcavator, tractor backhoe weight, optimum | 4.9-7.8 t | 10800-17200 lb |
| Miniexcavator, tractor backhoe weight, range *4 | 4.3-9.5 t | 9500-20900 lb |
| Skid steer, robot weight, optimum | 3.3-5.2 t | 7300-11500 lb |
| Skid steer, robot weight, range *4 | 2.6-6.3 t | 5700-13900 lb |
| Noise level, measured (2000/14/EC) | 120 dB(A) | |
| Noise level, guaranteed (2000/14/EC) | 124 dB(A) |