Sandvik Construction provides solutions for construction industries in niches such as quarrying, tunneling, demolition, dimensional stone, recycling and civil engineering.

BR777 Hydraulic breaker

Sandvik BR777 breaker is capable of accepting a wide range of oil flows as well as tolerating high back pressures. This means that it can be mounted on a huge range of carriers and utilized in an infinite number of applications.

Reliable and durable

Rammer Small Range hammers are built to last. Membrane-type accumulators assist with power stokes, whilst providing protection against hydraulic spikes. Field replaceable lower tool bushing and a low-maintenance design ensures optimum hammer uptime, higher availability levels and reduced owning and operating costs.

Features and benefits

  • Single body design
  • Simple tool installation
  • Sealed housing design
  • High frequency
  • Wide oil flow range
  • Membrane type accumulator
  • Protected hose connection
  • Sound supressed
  • No tie rods
  • Constant Blow Energy
  • Easy to use and service
  • Low operating costs
  • Broad carrier range
  • High reliability
  • Sonstant high productivity

Key specifications

Working weight, kg / lb 385 / 850
Impact rate, bpm 500-1700
Operating pressure, bar / psi 90-140 / 1305-2030
Tool diameter, mm / in 80 / 3.15
Acceptable oil flow, l/min / gal/min 40-120 / 10.6-31.7
Mini excavator weight, allowed range, t / lb 4.3-9.5 / 9500-20900
Skid steer weight, allowed range, t / lb 2.6-6.3 / 5700-13900

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