1.S.U.G SD¡Á¡Á¡ÁG, SDA¡Á¡Á¡ÁG series tricone bit use Journal bearing. Hardfaced head bearing surface. Cone bearing inlaid with friction reducing alloy and then silver-plated. The load capacity and seizure resistance of the bearing is greatly improved.
2. O ring seal is made of the more wear resistance high saturated buna-N with the increased seal section and precisely designed sealing flange in the cone sealing area increased the reliability of the seal.
3. The bit bearing can be ball locked
4. New type of grease that can sustain high temperature up to 250¡ãC is utilized.
5. High wear resistance and excellent cutting ability of the insert bit are given full play by using carbide compacts of high strength and high toughness in combination with optimized compact numbers and rows, the exposure height and special shaped compacts. For steel tooth bit, the tooth surface is hardfaced with new type of wear resistant material and thus extended working life of the cutting structure while still maintaining high ROP.
Characteristic ofPredominance technology
.S.U.G SD¡Á¡Á¡ÁG, SDA¡Á¡Á¡ÁG series inserted tricone bits is O-ring sealed journal bearing product. It can sustain higher WOB under normal rotary speed and is suitable for drilling formations from very soft to very hard by properly selecting different cutting structures.
S.U.G available sizes and types of SD¡Á¡Á¡ÁG, SDA¡Á¡Á¡ÁG series tri-cone bits:
Large dia. offset crested scoop compacts in inner row, wedge compacts in outer row
Very soft with low compressive strength and high drillability, such as shale, clay, sandstone and conglomerate, etc.
LH437G
LHA437G
0.35¡«0.95
140¡«60
Large dia. offset crested scoop compacts in inner row, wedge compacts in outer row
Very soft with low compressive strength and high drillability, such as shale, clay, sandstone and conglomerate, etc.
SD447G
SDA447G
0.35¡«1.00
140¡«60
Conical compacts in inner row, wedge compacts in outer row, and with added number of compacts rows
Soft with low compressive strength and high drillability, such as shale, clay, sandstone, soft limestone, salt bed and gypsolyte, etc.
LH517G
LHA517G
0.35¡«1.05
120¡«50
Large dia. offset crested scoop compacts in inner row, wedge compacts in outer row
Soft with low compressive strength and high drillability, such as shale, clay, sandstone and soft limestone, etc.
SD537G
SDA537G
0.50¡«1.05
110¡«40
Offset crested scoop compacts in inner row, wedge compacts in outer row and inequable spaced compacts arrangement
Medium soft with low compressive strength and harder abrasive stringers, such as hard shale, hard gypsolyte, soft limestone, sandstone and dolomite with stringers, etc.
SD617G
SDA617G
0.50¡«1.05
80¡«40
Large radius scoop compacts in inner row, wedge compacts in outer row and inequable spaced compacts arrangement
Medium hard with high compressive strength and thick & hard stringers, such as hard shale, limestone, sandstone and dolomite, etc.
SD637G
SDA637G
0.70¡«1.20
70¡«40
Large radius scoop compacts in inner row, spherical compacts in outer row
Medium hard with high compressive strength and high abrasiveness, such as limestone, dolomite, sandstone and chert, etc.
NotE: The upper limits of WOB and RPM recommended in above table should not be used simultaneously.
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