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.
The Flange mounting mounting design allows for the use of existing mounting plates, as well as carrier and application specific customization.
Twin handed, smart
A connecting block allows easy adaptation to different excavator setups.
This twin-handed design allows optimal mounting on both left and right handed carriers, prolonging the service life of the hose connections.
Easy installation with hydraulic quick hitch mounting brackets.
Single part tool bushing retained with shared tool pin
Single part tool bushing with long bearing surface and thrust ring maximizes tool and bushing life lowering operating costs. Whilst being field replaceable and easy to remove allows faster and easier field service lowering maintenance costs.
Membrane type accumulator
Membrane-type accumulator eliminates Nitrogen leakages, ensuring constant maximum impact power and eliminating the need for recharging in field.
Heavy Duty Housing
Heavy duty housings feature a robust structure, are made of wear-resistant steel, with minimum number of holes.
Resulting in a longer housing lifetime even in the harshest of applications, reducing the cost of ownership through less maintenance.
- CBE+ (Constant blow energy plus)
No tie rods
Fast and easy to service with no special tooling required.
The metallurgical industries can be broadly divided into primary, secondary, and miscellaneous metal production operations.
|Minimum working weight, flange mounted *1||385 kg||850 lb|
|Weight||315 kg||690 lb|
|Working length||1449 mm||57.0 in|
|Impact rate (frequency)||500 - 1700 bpm|
|Operating pressure||90 - 140 bar||1305 - 2030 psi|
|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|
|Oil flow range||40 - 120 l/min||10.6 - 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"|
|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)||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 (Tuesday, March 17, 2020)