Cutting Diameter mm	Shell Height mm	Shell OD mm	Shell Thickness mm	Stiffening Ring Thickness mm	Stiffening Ring Height mm	QTY of Roller Cones (PCS)	Weight(KG)	YH BRAND TYPE
φ600	1200	500	20	20	200	4	600	YH600-1200-4
φ800	1200	700	20	20	200	6	800	YH800-1200-6
φ900	1200	800	20	20	200	7	820	YH900-1200-7
φ1000	1200	900	20	20	200	8	980	YH1000-1200-8
φ1200	1200	1100	20	20	200	10	1300	YH1200-1200-10
φ1500	1200	1400	20	20	200	12	1600	YH1500-1200-12
φ1600	1200	1500	20	25	200	13	1740	YH1600-1200-13
φ1800	1000	1700	20	25	200	15	1950	YH1800-1000-15
φ2000	800	1900	25	25	200	16	2350	YH2000-800-16
φ2200	800	2100	25	25	200	18	2700	YH2200-800-18
φ2500	800	2400	25	25	200	21	3000	YH2500-800-21
φ2800	800	2700	25	25	200	24	3800	YH2800-800-24
φ3000	800	2900	25	25	200	25	4300	YH3000-800-25
YINHAI Brand Core barrel can be produced depending on customization.

We are the 100% real manufacturer and also produces other sizes and types of rock bits besides above products. Welcome video call to inspect factory

YINHAI CORE BARREL WITH ROLLER BITS

 

Overview of The Core Barrel with Roller Cone Bits

The Core Barrel with Roller Cone Bits uses high carbon steel and a special bit Angle to maintain drilling strength and efficiency. There are three types of core barrels A. Core barrel with bullet teeth is used for cutting an annular ring in rock or concrete(also reinforced concrete). B. The Core Barrel with Roller Cone Bits is used in very strong rock formations(compressive strength >100Mpa). C. Cross cutter core barrel is mainly used to break rock cores that remain in the borehole after using a core barrel, also suitable for drilling hard, jointed rock(<100Mpa) and for penetrating through layers containing boulders. Applicable formation: dense sand, gravel, and medium hard rocks, etc. The Structure of Core barrel  :

1. With dual accident prevention function, the core barrel is equipped with a twist-off prevention device and an accident prevention cable. Once the rotary shaft breaks, the core barrel will not fall into the hole.
2. Set limit height device, when drilling hard rock, it will not cause the core to wear and destroy the upper mechanism due to the long-time drilling (long stone core).
3. Compression spring device, This device ensures that the two bucket flaps are stretched to the maximum when the core barrel is drilled into the hole or during drilling, and it will not tremble due to the jitter of the drill rod, so that it can prevent the stone core from being squeezed between the bucket flap and the core barrel wall, and cause broken the bucket flaps.
4. This Core barrel can be used not only in hard rock but also in pumice formations with gravel diameters greater than 250mm.