777 HOT

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

  • Flange mounting

    The Flange mounting mounting design allows for the use of existing mounting plates, as well as carrier and application specific customization.

  • Heat Resistant Seals
  • Twin-handed

    The twin-handed design allows optimal mounting on both left and right handed carriers, prolonging the service life of the hose connections.

  • Single lower tool bushing

    The single lower tool bushing, replaces the need for an upper and a lower tool bushing, whilst being field replacable. This allows for faster and easier field service.

  • 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 and heavy duty wear plates for optimum vibration dampening.

    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.

Applications

  • Primary Demolition

    Hydraulic excavators have largely replaced cranes with wrecking balls, enabling demolition to be carried out in a much more controlled and efficient manner.

  • Landscaping

    Gardening, graveyard and landscaping applications, hard ground and removal of smaller boulders, concrete fundaments or similar. 

  • Secondary Demolition

    Demolition of rubble on the ground, separation of rebar from concrete and preparation of material for further recycling, e.g. as landfill or others. 

  • Trenching

    Trenching is a form of primary breaking in which a narrow trench is excavated especially for laying pipes, cables or for installing drainage

  • Recycling

    The challenge with recycling is to combine strict environmental controls with cost-efficient methods to make recycling an economically viable proposition.

  • Boom mounted applications

    Hammers for use on crushers to ensure unrestricted flow of process. Removal of boulders which are too large to fit into crusher or which block the grizzly.

    Absolutely necessary to ensure safe working procedures. 

  • Metallurgical industry

    The metallurgical industries can be broadly divided into primary, secondary, and miscellaneous metal production operations.

 

Specification sheet
Select language German
Operator manuals

Specification

Minimum working weight, flange mounted  *1385 kg850 lb
Weight315 kg690 lb
Working length1449 mm57.0 in
Impact rate (frequency)500 - 1700 bpm
Operating pressure90 - 140 bar1305 - 2030 psi
Pressure relief setting  *2140 - 190 bar2030 - 2755 psi
Pressure relief max220 bar3190 psi
Pressure in LP-circuit36 - 38 bar520 - 550 psi
Oil flow range40 - 120 l/min10.6 - 31.7 gal/min
Back pressure max20 bar290 psi
Input power28 kW38 hp
Tool diameter80 mm3.15 in
Pressure line connection (IN)BSPP-internal 3/4"
Return line connection (OUT)BSPP-internal 3/4"
Pressure line size, min. inner diameter19 mm0.75 in
Return line size, min. inner diameter19 mm0.75 in
Optimum oil temperature40 - 60 °C104 - 140 °F
Allowed oil temperature range-20 - 80 °C-4 - 176 °F
Optimum oil viscosity at operating temperature30 - 60 cSt
Allowed viscosity range20 - 1000 cSt
Skid steer, robot weight, optimum3.3 - 5.2 t7300 - 11500 lb
Skid steer, robot weight, range  *32.6 - 6.3 t5700 - 13900 lb
Miniexcavator, tractor backhoe weight, Optium4.9 - 7.8 t10800 - 17200 lb
Miniexcavator, tractor backhoe weight, Range  *34.3 - 9.5 t9500 - 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 (Monday, July 1, 2019)

Tools

"Parallel" tools have the cutting edge in line with the boom.  For the hammer models 255E, 355E, 455E, 555E, 777E , 999E and 1322E the tool ...
"Transverse" tools have the cutting edge across the boom.  For the hammer models 255E, 355E, 455E, 555E, 777E and 1322E the tool retaining p...
The Ground Compacting Tool allows compatible hammers to double in function as a ground compactor, removing the need to have a specialized co...
The Standard Chisel Tool is used for rock and reinforced concrete.
Moil Point tools allow for optimum positioning in material which is loose or can be easily separated, e.g. brick walls or loose rock in tunn...
The Pyramid Tool makes light work of breaking non-abrasive material of all strengths. Non-abrasive materials which allow a high penetration ...
The Long Moil Point Tool is designed to be used mainly with a breaker boom where it supplies the extra length to break rock which may block ...

Parts

Tool grease is essential when using hydraulic hammers. It needs to withstand high temperatures and pressure. Our special tool grease has bee...
Tool grease is essential when using hydraulic hammers. It needs to withstand high temperatures and pressure. Our special tool grease has bee...
Tool grease is essential when using hydraulic hammers. It needs to withstand high temperatures and pressure. Our special tool grease has bee...

Accessories

AGW

The AGW (Air, Grease & Water) service box is designed to be mounted on any excavator, to act as a mobile service unit for any the attachment...

Reason for contact