GRUNDOMAT N

A strong characteristic of the new Grundomat N is the crowned head, which expands the bore directly to the full bore diamteter. The sharp cutting crowns force their way into larger stones to fragment them. Due to the small contact surface of the cutting crowns, the highest possible degree of efficiency is achieved with the same amount of striking energy. The spoils are pushed through the openings between the cutting crowns and dis-placed to the rear. Then the penetration process starts. The ”head work“ is carried out in 4 instead of 3 working steps:

Pre-stroke • Pulverizing • Relocation • Penetration

Connection hoseh

Direct installationfor
PE and PVC pipes

Ground stake

Sleeve pipe with
steel rope insulator

Lubricator

Starting cradle for lateral and vertical alignment

Telescopic aiming frame
GRUNDOSCOPE

Openings for spoil displacement

Cutting crowns

Bore for
pulling eye

längsbewegliche Meißelspitze

Der GRUNDOMAT N ist besonders servicefreundlich. Wenn z. B. ein Dichtring ausgetauscht oder das Hülsrohr angebaut werden muss, kann die Montage auf der Baustelle ausgeführt werden. Der Trick: Ein Spannelement spreizt das Gewinde wie einen Dübel und fixiert so die Endverschraubung im Gehäuse, also kein Verkleben mehr.

Technical data

Grundomat	45 N	55 N	65 N	65 NK	75 N	75 NK	85 N	95 N	95 NK	110 N	130 N*	145 N*	180 N**
Bore diameter (mm)	45	55	65	65	75	75	85	95	95	110	130	145	180
Length (mm)	979	1131	1290	933	1399	1100	1528	1762	1393	1700	1802	2033	2280
Weight (kg)	9	15	24	16	33	24	46	65	50	96	117	168	260
No. of strokes (min^-1) 1. gear	530	470	460	600	395	495	360	320	390	350	370/340*	310	280
No. of strokes(min^-1) 2. Gang	635	570	585	700	480	605	440	415	500	410	435	-	-
Air consumprion(m³ /min)	0,35	0,5	0,8	0,8	0,9	0,9	1,0	1,4	1,4	1,7	3,0	3,4	4,5
max. pipe OD(mm)	40	45	50	50	63	63	75	85	85	90	110	125	160

_{NK = Short version
* GRU 130 ist wahlweise is available with 2-gear-control or with servo control
** only with servo control
The upsizing diamter depends on the soil conditions, Pipe diamters upon request.
Aa a standard all GRUNDOMAT hammers are equipped with steel rope insulator at the sleeve pipe.
Subject to change! 01/2011}

GRUNDOMAT N

Technical data

Further information on GRUNDOMAT