Rammer777E

Rammer 777E

Reliable and versatile Rammer 777E rockbreaker is designed for optimum carrier compatibility in the 2.6 to 9.5 tonne range.

This 390 kg rockbreaker is an ideal choice to meet the specific demands of rental fleet operators featuring a pivoting hose connecting block and a reversible manifold that allows for right or left hand hose connections. In addition, it has ability to accept a wide range of oil flows and pressures.

The Rammer 777E comes with the remote monitoring hardware RD3 installed.

Key Specifications

Product Weight

315kg

Product Carrier Weight

4.3 – 9.5 t

Oil Flow Range

40 – 120 l/min

Features

  • High pressure membrane accumulator
  • Twin handed, smart
  • Tubular accumulator
  • Vibration and sound suppressed
  • Flange mounting
  • 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

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 and Special Tool Grease.

Specifications

Weight

320 kg

Working Length

1449 mm

Minimum working weight, flange mounted *1

390 kg

Impact rate (frequency)

500 - 1700 bpm

Operating pressure

90 - 140 bar

Pressure relief setting *2

140 - 200 bar

Pressure relief max

220 bar

Pressure in LP-circuit

36 - 38 bar

Oil flow range

40 - 120 l/min

Back pressure max

20 bar

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)

120 dB(A)

Noise level, guaranteed (2000/14/EC)

124 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.