777E Scaler

Applications: Scaling
Min. working weight, flange mounted *1: 415 t (910 lb)
Tool diameter: 80 mm (3 in)

Made to withstand harsh conditions of scaling. The 415 kg Rammer 777E Scaler is compatible with carriers in the 2.6 to 9.5 ton range.

The 777E Scaler features robust yet easily repaired housing with the floating seal between the tool and the housing patented by Rammer. This hammer have safe and quick tool change system. Connections for grease, air and water and optimized application-specific operating pressure.

Product Specifications

Specification sheet (German)

Specification sheet (English)

Operator manual (Mongolian)

Operator manual (Croatian)

Operator manual (Czech)

Operator manual (Danish)

Operator manual (Estonian)

Operator manual (Finnish)

Operator manual (French)

Operator manual (German)

Operator manual (Hungarian)

Operator manual (Italian)

Operator manual (Norwegian)

Operator manual (Portuguese)

Operator manual (Russian)

Operator manual (Slovak)

Operator manual (Spanish)

Operator manual (Swedish)

Operator manual (Bulgarian)

Operator manual (Dutch)

Operator manual (Icelandic)

Operator manual (English)

Min. working weight, flange mounted *1: 415 t (910 lb) ¹⁾
Weight: 340 t (750 lb)
Working length: 1,449 mm (57 in)
Impact rate (frequency): 500 - 1,700
Operating pressure: 80 - 130 bar (1,160 - 1,885 psi)
Oil flow range: 40 - 120 l/min (11 - 32 g/min)
Pressure relief setting *2: 130 - 180 (1,885 - 2,610 ) ²⁾
Pressure relief max: 220 bar (3,190 psi)
Pressure in LP-circuit: 30 - 32 (435 - 465 )
Back pressure max: 20 (290 )
Input power: 26 kW (35 hp)
Tool diameter: 80 mm (3 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 (1 in)
Return line size, min. inner diameter: 19 mm (1 in)
Grease connection: UNF 11/16-16-external
Air connection (A): UNF 11/16-16-external
Water connection: UNF 11/16-16-external
Optimum oil temperature: 40 - 60 (104 - 140 )
Allowed oil temperature range: - 80 ( - 176 )
Optimum oil viscosity at operating temperature: 30 - 60
Allowed viscosity range: 20 - 1,000
Skid steer, robot weight, optimum: 3 - 5 (7,300 - 11,500 )
Skid steer, robot weight, range *3: 3 - 6 t (5,700 - 13,900 lb)
Miniexcavator, tractor backhoe weight, Optium: 5 - 8 (10,800 - 17,200 )
Miniexcavator, tractor backhoe weight, Range *3: 4 - 10 t (9,500 - 20,900 lb) ³⁾
Noise level, measured (2000/14/EC): 130
Noise level, guaranteed (2000/14/EC): 134

Min. working weight, flange mounted *1: 415 t (910 lb) ¹⁾
Weight: 340 t (750 lb)
Working length: 1,449 mm (57 in)
Impact rate (frequency): 500 - 1,700
Operating pressure: 80 - 130 bar (1,160 - 1,885 psi)
Oil flow range: 40 - 120 l/min (11 - 32 g/min)
Pressure relief setting *2: 130 - 180 (1,885 - 2,610 ) ²⁾
Pressure relief max: 220 bar (3,190 psi)
Pressure in LP-circuit: 30 - 32 (435 - 465 )
Back pressure max: 20 (290 )
Input power: 26 kW (35 hp)
Tool diameter: 80 mm (3 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 (1 in)
Return line size, min. inner diameter: 19 mm (1 in)
Grease connection: UNF 11/16-16-external
Air connection (A): UNF 11/16-16-external
Water connection: UNF 11/16-16-external
Optimum oil temperature: 40 - 60 (104 - 140 )
Allowed oil temperature range: - 80 ( - 176 )
Optimum oil viscosity at operating temperature: 30 - 60
Allowed viscosity range: 20 - 1,000
Skid steer, robot weight, optimum: 3 - 5 (7,300 - 11,500 )
Skid steer, robot weight, range *3: 3 - 6 t (5,700 - 13,900 lb)
Miniexcavator, tractor backhoe weight, Optium: 5 - 8 (10,800 - 17,200 )
Miniexcavator, tractor backhoe weight, Range *3: 4 - 10 t (9,500 - 20,900 lb) ³⁾
Noise level, measured (2000/14/EC): 130
Noise level, guaranteed (2000/14/EC): 134

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.

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.

Features & Applications

Features
- High pressure membrane accumulator
  Membrane-type accumulator eliminates Nitrogen leakages, ensuring constant maximum impact power and eliminating the need for recharging in field.
- 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.
- Tubular accumulator
  The leak-free tubular accumulator is filled with nitrogen and requires no maintenance or time-consuming recharging between maintenance intervals. With its large surface area and short hydraulic connections to the piston, it effectively reduces pressure fluctuations in the hydraulic system and ensures maximum piston acceleration and high impact frequency. This design provides 100% power at all times.
- Flange mounting
  The Flange mounting design allows for the use of existing mounting plates, as well as carrier and application specific customization.
- Robust side plate design
  The bolted side plates are designed for extremely tough applications. This robust construction is very easy to maintain and can quickly be repaired.
- CBE+ (Constant Blow Energy plus)
  The RAMMER CBE-System (CBE = Constant Blow Energy) with the active pressure control valve and the permanently filled tubular accumulator maintains the hydraulic pressure level to ensure that each impact delivers the maximum possible power. The RAMMER CBE system accepts a wide range of oil flows and high back pressures, allowing a wide range of carriers to be used. The "+" stands for safe and fast connection to the carrier.
- Optimized operating pressure (Scaler)
  With the CBE operating system is RAMMER able to optimize the operating pressure of the hammer regardless of oil flow. For this application, the operating pressure has been slightly reduced.
- No tie rods
  A smart design without tie rods allows for ideal guidance of the piston and optimal alignment of the tool. Fast, safe and easy to maintain without the need for special tools.
- Single part tool bushing retained with shared tool pin
  The one-piece quick-change tool bushing inludes a thrust ring, the upper and the lower tool bushing into one component. This quick-change tool bushing can easily be replaced on site, making maintenance easier, faster and safer.
- Fast-change tool system
  Quick and safe tool change system transverse to the hammer. No need to reach under the hammer during tool change.
- Robust tool sealing
  The floating seal between the tool and the housing is patented by RAMMER and protects the power cell against debris. This extends the service life of the hammer significantly.
- Connection for external lubrication
  An external lubrication system, such as RAMLUBE I or the AGW, can be connected to the integrated grease hose.
- RAMLUBE I (optional)
  Carrier mounted greasing device
- RAMMER Air-Jet
  The transfer line for compressed air, which is an integral part of the hammer. This line connects e.g. the RAMAIR or the AGW air supply to the hammer. The injection of compressed air prevents tool grease and impurities from entering the impact area when working overhead. Thus it prevents excessive wear on piston, seals and tool bushings. Pressurized air forces the tool grease out of the hammer, thus ensuring that the hammer is always lubricated by clean tool grease.
- Ramair (optional)
  The RAMMER - RAMAIR air supply prevents dirt from entering the hammer housing and the impact chamber in order to achieve longest service life of the RAMMER hammer even in the most demanding applications. It also ensures that the tool grease is conveyed to the tool bushings at any time and in any position of the hammer and that no overfilling occurs. The RAMMER - RAMAIR is particularly recommended for highly abrasive and dusty materials or overhead applications, such as tunneling or robbery work.
- AGW (optional)
  Air, grease and water
- RAMMER Water-Jet (dust suppression)
  The integrated dust suppression system, with which a fine water mist is applied under high pressure directly to the area where the dust is generated. The water connection is on the housing of the hammer.
Applications
- Scaling
  Scaling is removal of loose material from the tunnel roof and walls to prevent accidents by falling rocks.