Rammer 555E HD.

Heavy Duty version of the 555E: 320 kg for carriers from 3.2 to 8 t. Wear-reinforced housing, tie-rod-free design for quick maintenance and two-person mounting. Includes RD Guard.

Carrier: 3.2 – 8 t
Operating weight: 320 kg
Oil flow: 35 – 90 l/min
Tool Ø: 72 mm
Blows per minute: 600 – 1.800
Input power: 21 kW

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01 Specifications

Technical data sheet for the Rammer 555E HD.

Manufacturer data. Working weight includes medium mounting flanges and standard wear parts. Always check the weight allowed by your carrier manufacturer.

Carrier

Mini excavator or backhoe (range)	3,2 – 8 t
Mini excavator or backhoe (optimal)	4 – 6 t
Skid steer or robot (range)	2 – 5 t
Skid steer loader or robot (optimal)	2 – 4 t

Performance

Min. working weight with flanges	320 kg
Hammer weight	260 kg
Impact frequency (blows/min)	600 – 1.800
Input power	21 kW
Tool diameter	72 mm

Hydraulics

Oil flow	35 – 90 l/min
Working pressure	90 – 140 bar
Relief valve setting	140 – 190 bar
Maximum relief pressure	220 bar
Maximum back pressure	20 bar
Optimal oil temperature	40 – 60 °C

Connections

Pressure connection (IN)	BSPP interna 3/4"
Return connection (OUT)	BSPP interna 3/4"
Pressure hose, min. inner Ø	19 mm
Return hose, min. inner Ø	19 mm

Noise

Measured sound level (LWA)	127 dB
Guaranteed sound level (LWA)	131 dB

02 Specifications

What's inside the 555E HD.

01
High-pressure diaphragm accumulator

Eliminates nitrogen leaks, maintains maximum impact power and requires no on-site recharging.
02
Smart two-person assembly

Connection block that adapts to any excavator and facilitates assembly with quick couplers.
03
Tubular accumulator

Nitrogen accumulator without leaks or recharges that reduces pressure fluctuations and ensures maximum impact frequency.
04
Flange mounting

It allows reusing existing mounting plates and adapting the hammer to each carrier and application.
05
Reinforced housing

Robust wear-resistant steel structure with minimal holes, for a long service life.
06
CBE+ (Constant Blow Energy plus)

Active control valve and tubular accumulator for maximum-power blows with a wide range of flow rates and back pressures.
07
Without tie rods

Tie-rod-free design that guides the piston and aligns the tool optimally. Quick and safe maintenance without special tools.
08
One-piece tool bushing

Integrates thrust ring and upper and lower bushings in a single component that is replaced on site quickly and safely.
09
Quick tool change

Transverse tool change system: no need to put your hands under the hammer.
10
RD3 with SAM (standard)

Online hour meter and hammer location on the map.

03 Applications

What jobs is it for?

Fixed boom installation
Primary demolition
Trenching
Secondary demolition
Asphalt or frozen ground cutting
Metallurgical industry

04 Tools

Compatible original tools.

Reference	Type
BJ631	Standard chisel
BJ632	Long chisel
BJ633	Point
BJ633K3	Pyramidal tip
BJ635	Bucket parallel to the arm
BJ636	Bucket cross-mounted on the boom
BJ637	Plate compactor
BJ638	Long point