Rammer_777E_HeavyDuty

Rammer 777E Heavy Duty Small

The Rammer 777E Heavy Duty rockbreaker has been manufactured for the toughest of applications in demanding conditions.

Robust heavy duty housing withstand wear and no-tie-rods enables fast and easy servicing. Twin handed design allows optimal mounting on both left and right-handed carriers, prolonging the service life of the hose connections.

This 340kg Heavy Duty Small Hydraulic Rockbreaker is suitable for carriers in the 2.6 to 9.5 tonne range and it comes with remote monitoring device RD3 installed.

Key Specifications

Product Weight

340kg

Product Carrier Weight

1.6 – 9.5 t

Oil Flow Range

40 – 120 l/min

Features

  • High pressure membrane accumulator
  • Twin handed, smart
  • Tubular accumulator
  • Flange mounting
  • Heavy Duty Housing
  • CBE+ (Constant Blow Energy plus)
  • No tie rods
  • Single part tool bushing retained with shared tool pin
  • Fast-change tool system
  • RD3 incl. MyFleet (as standard)

Applications

  • Primary Demolition
  • Boom mounted applications
  • Landscaping
  • Secondary Demolition
  • Trenching
  • Recycling
  • Asphalt Cutting
  • Ground Compacting
  • Metallurgical industry

Compatible with Standard Chisel Tool, Long Chisel Tool, Moil Point Tool, Long Moil Point Tool, Pyramid Tool, Spade Tool (parallel to boom), Spade Tool (Transverse to boom), Compacting Plate Tool.

Specifications

Weight

340 kg

Working Length

1449 mm

Minimum working weight, flange mounted *1

415 kg

Impact rate (frequency)

500 - 1700 bpm

Operating pressure

90 - 140 bar

Pressure relief setting *2

140 - 190 bar

Pressure relief max

220 bar

Pressure in LP-circuit

36 - 38 bar

Back pressure max

20 bar

Oil flow range

40 - 120 l/min

Input power

28 kW

Tool diameter

80 mm

Pressure line connection (IN)

BSPP-internal 3/4"

Return line connection (OUT)

BSPP-internal 3/4"

Pressure line size, min. inner diameter 

19 mm

Return line size. min. inner diameter

19 mm

Optimum oil temperature

40 - 60°C

Allowed oil temperature range

-20 - 80°C

Optimum oil viscosity at operating temperature

30 - 60 cSt

Allowed viscosity range

20 - 1000 cSt

Miniexcavator weight optimum

4.9 - 7.8 t

Miniexcavator weight, range *3

4.3 - 9.5 t

Skid steer, robot weight, optimum

3.3 - 5.2 t

Skid steer, robot weight, range *3

2.6 - 6.3 t

Noise level, measured (2000/14/EC)

130 dB(A)

Noise level, guaranteed (2000/14/EC)

134 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.

Specifications are subject to change without notice.