Drilling Bits Ball Bearing

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1
Product Unit

Pieces
Origin

China Mainland
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Description

Product Detail

Drilling bits ball bearing

Yusion Industrial supplies Rock Bit Balls for drill bits.Drill bits is the important tool in oil drilling,its performance will directly affect the quality of the drilling,the drilling efficiency and drilling costs.Therefore,drill bits have strict requirements on rockbit balls.

Yusion S-2 Tool(Rockbit) Ball are made from S-2 tool steel as per ASTM A681 and specially heat treated to provide excellent hardness and wear resistance combined with toughness and impact resistance to survive extreme shock loads found in the drilling industry.The balls we produced are ranging from 6.35mm to 63.5mm with grade from G40 to G200.The ball surface has a smooth ground anad polished finish.They provide good wear characteristic and good services in withstanding the abrasion of pulverized rock and mud slurries.

SIZE RANGE

Ø 6.35 mm – Ø 63.5 mm(ASTM A681/T-41902 S-2 Rockbit Balls)

MATERIAL ANALYSIS

S-2 Tool Steel (Rockbit) balls are manufactured to the following

CHEMICAL ANALYSIS

Carbon	0.47% to 0.55%
Manganese	0.30% to 0.50%
Silicon	0.90% to 01.10%
Molybdenum	0.30% to 0.60%
Phosphorus	0.030% maximum
Sulphur	0.030% maximum
Vanadium	0.5% maximum

MECHANICAL PROPERTIES

Hardness as measured on parallel flat surfaces is Rockwell “C”55-58.Ball of special hardness are available upon request.

Tensile strength Yield strength	310,000 psi 290,000 psi
Elongation in two inches	7%
Reduction in area	25%
Modulus of elasticity Density	30,000,000 psi 0.283 lbs./cu.in
Grade	Size Range in Inches and Millimeters
40-200	6.35mm-63.5mm

PRODUCTION PROCESS

image006(001).jpg QUALITY INSPECTION

Our raw materials, products and finished products will be inspected by self - inspection, mutual inspection, special inspection and sampling inspection.We have digital micrometer?Torsion Spring Table?Eddy Current Test Machine?Pressure Testing Machine?Vibration Measuring Instrument?Roundness Measuring Instrument?Micrometer?Visual Inspection to control our products strictly.

The most advanced inspection equipment-AVKIO eddy current test machine we had for steel ball surface quality from Czech Republic & photoelectric appearance instruments to ensure our balls 100% final inspection.