Core barrel with roller bits

Core barrel with roller cutters on the cutting ring, for sandstone, limestone and granite of more than 40 MPa.

Suitable forsandstone, limestone and granite above 40 MPa

Size rangeΦ600 – Φ300010 sizes

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Core barrel with roller bits — product photo — 01Product photo

Core barrel with roller bits — dimension drawing — 02Dimension drawing

03Technical data

DiameterD · mm	Body diameterD1 · mm	Overall heightH · mm	Body heightH1 · mm	Upper wall thicknessT1 · mm	Lower wall thicknessT2 · mm	Bullet teethpcs
Φ600	500	1700	1200	16	40	4
Φ800	700	1700	1200	16	40	6
Φ1000	900	1700	1200	16	40	8
Φ1200	1100	1700	1200	16	40	10
Φ1500	1400	1700	1200	16	40	12
Φ1800	1700	1700	1200	20	40	14
Φ2000	1900	1700	1200	20	40	16
Φ2200	2100	1700	1200	20	40	18
Φ2500	2400	1700	1200	20	40	20
Φ3000	2900	1700	1200	20	40	22

10 catalogue sizes from Φ600 to Φ3000 mm, each with body diameter, overall height and body height. Catalogue values; dimensions in mm unless stated. Other sizes on request.

Overview

Roller cutters crush hard rock under the rig's down-force while the barrel cuts an annular groove; the core is then broken off and lifted out.

Use it where bullet teeth would wear too quickly — the catalogue sets the threshold at rock of 40 MPa and above.

Applications

Hard-rock sockets
Granite and limestone
Large-diameter piles

How to order

To order, give us the diameter from the table, your rig make and model, and the Kelly bar connection. We reply by email within one business day.

Enquire about Core barrel with roller bits

info@zigaglobal.com Request a quote