Piston Corer

KC piston corer

The Piston corer takes up to 2 meters deep undisturbed samples from soft sediment and up to 4 meters deep samples from muddy sediment.

Position numbers refer to the schematic at the left.

An AISI 316 stainless steel heavy duty releaser (pos. 1), based on the Kullenberg principle, is mounted at the top. Up to 10 lead weights (pos. 4) of 28 kg each can be mounted. The upper part of the corer is made of AISI 316 stainless steel

The corer tube (pos. 9) is either made of AISI 316 stainless steel  (ø104/99mm) or transparent PVC plastic (ø110/99 mm). At the end of the releaser hook (pos. 1) the 30 kg release weight (pos. 7) is mounted.

At the bottom of the corer tube a piston (pos. 8) with a leather seal is positioned. The piston is connected to the releaser (pos. 1) by a ø8 mm AISI 316 stainless steel wire. During operation the corer tube (pos. 9) is released 1.7 meter above the sediment as the releaser weight reaches the sediment surface. The wire (pos. 8), which has a slack of about 1 meter, allows the corer tube to fall free until the piston (pos. 7) is activated just before the corer tube enters the sediment. The penetration depth can be regulated by the total weight load (pos. 4). When the sample is to be retrieved, the tube is positioned at two trestles and a piston rod (pos. 12), operated by an AISI 316 stainless steel ratchet, presses out the sediment sample for slicing.

Manual for Piston Corer:

Click here (PDF file 255 kb) or right-click, save destination.


Technical data:
Description Dimensions

Ordering No.

(4) Piston corer complete, only five lead weights. Consisting of 1 - 8.
Total weight of main rack 270 kg.

Please note: Corer tube(s) (9) are not included. Please order separately. Can be delivered as AISI 304/AISI316 stainless steel or transparent PVC.

Length excl. tube
1.7 m
(9) Tube AISI 304 stainless steel  (O.D./I.D. x L)
104/99 mm x 2.2 m.
Weight 12 kg.
104/99 mm x 4.2 m.
Weight 23 kg.

(9) Tube transparent PVC (O.D./I.D. x L) 110/99 mm x 2.2 m. Weight 6 kg.
110/99 mm x 4.2 m. Weight 11 kg

(10) Tube detacher, weight 3 kg. 13.901
(11) Drum with ratchet device and wire, weight 6 kg. 13.902
(12) Piston rod for ejecting the sample, weight 10 kg. 13.903
Two trestles made of stainless steel. 13.904
(4) Extra weights, 28 kg each 13.905



Main rack (pos. 3)

AISI 316 stainless steel

Kullenberg releaser (pos. 1)

AISI 316 stainless steel

Corer tube (pos. 9)

Optional: Ø104/Ø99 mm AISI 316 stainless steel or Ø110/Ø99 mm, transparent PVC

Piston (pos. 8)


Piston seal


Wires (pos. 2 and pos. 6)

AISI 316 stainless steel

Weights (pos. 4)

Lead 4-12

Trestles for corer tube

Stainless steel

Partial reference list for KC piston corer
Prof. Dr. Sergio R. Dillenburg
Dr. Elirio E. Toldo Jr.

Centro de Estudos de Geologia
Costeira e Oceânica - CECO
Instituto de Geociências - IG
Universidade Federal de Rio Grande
do Sul - UFRGS
Torben Vang
Marine Geologisk Surveyor
Damhaven 12
Dr. Francesco Grosso
Via Volturno, 22R
16129 Genova
Mr. R. Massrour
P.O.Box 15115-573
Teheran - Iran
Tel.: +021 87 10 720
Fax: +021 87 16 707

Source: KC Denmark A/S