FOB Price
Obtenir le dernier prix( Negotiable )
|Minimum Order
Localit:
china
Prix de commande minimale:
-
Commande minimale:
1 Piece
Packaging Detail:
wooden case and steel box
Delivery Time:
within 7days
Supplying Ability:
300 Piece per Week
Payment Type:
T/T, L/C, PayPal
Personne à contacter yousuf
Cangzhou, Hebei
Description of drill bit :
1)This series tricone bit use Sealed roller bearing structure. With rollers arranged in grooves recessed in the cone body, the size of the bearing journal is increased.
2)Surface of the high precision bearing heat treated by using advanced heat treatment process to improve the load capacity and service life of the bearing.
3)Preventing reflux structure has dual function, it can avoid air counterflow and dust entering into bearing when the air-compressor stop working accidentally, and separate air and water in order to avoid water entering into bearing when it works normally to prolong the life of bearing.
4)High precision bearing with two thrust faces. Balls lock the cone.Hardface heard bearing surface. Cone bearing inlaid with friction-reducing alloy and then silver-plated. Abrasion resistance and seizure resistance of the bearing are improved and suitable for high rotary speed.Â
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|
IADC
|
WOB
(KN/mm)
|
RPM
(r/min)
|
Applicable Formations
|
| **1 | 0.3~0.*5 | **0~*0 | Very soft formations with low compressive strength and high drillability, such as clay, mudstone, chalk, etc. |
|
**1
|
0.3~0.*5
|
**0~*0
|
Soft formations with low compressive strength and high drillability, such as mudstone, gypsum, salt, soft limestone, etc. |
|
**1
|
 0.3~0.*5
|
**0~*0
|
Soft to medium formations with low compressive strength and high drillability, such as medium soft shale, hard gypsum, medium soft limestone, medium soft sandstone, soft formation with harder interbed, etc. |
|
**1
|
0.*5~0.*5
|
**0~*0
|
Medium formations with high compress strength, such as medium soft shale, hard gypsum , medium soft limestone, medium soft sandstone, soft formation with harder interbed, etc. |
|
**1
|
0.*5~0.*5
|
**0~*0
|
Medium hard formations with high compressive strength, such as abrasive shale, limestone, sandstone, dolomite, hard gypsum, marble,etc |
|
**1
|
0.4~1.0
|
**0~*0
|
Hard semi-abrasive formations, such as abrasive shale,limestone,sand stone,dolomite,hard gypsum,marble,etc. |
|
Note: The upper limits of WOB and RPM in above table should
not be used simultaneously.
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