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S2 Rockbit Ball, Bearing Ball, Alloy Steel Ball manufacturer / supplier in China, offering AISI S-2 Rock Bit Steel Ball Hot Sale, Rock Bit AISI S-2 Tool Steel Balls for Mud Lubricated Bearing Assemblies/Oil Screw Drilling Bearing/Bearings for Downhole Motors, High Polished Chrome Steel Ball for Deep Groove Ball Bearing and so on.

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Supplier Homepage Product AISI S-2 Tool(Rockbit) Ball AISI S-2 Rock Bit Steel Ball Hot Sale

AISI S-2 Rock Bit Steel Ball Hot Sale

FOB Price: US $0.001-0.003 / piece
Min. Order: 1 piece
Min. Order FOB Price
1 piece US $0.001-0.003/ piece
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Port: Tianjin, China
Production Capacity: 2000 Tons Per Year
Payment Terms: L/C, T/T

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Basic Info
  • Model NO.: Well Drilling
  • Certification: ISO
  • Universal: Yes
  • Material: Bearing Steel
  • Hardness: HRC55~HRC60
  • Grade: G10-G600
  • Trademark: Yusion
  • Specification: ISO 9001
  • HS Code: 84829100
  • Customized: Customized
  • Standard Parts: Yes
  • Type: Ball
  • Size: 3/16"-6′
  • Diamenter: 4.7625mm-150mm
  • International Standard: ASTM/AISI/JIS/DIN
  • Transport Package: Cartons Wrapped by Wooden Pallets
  • Origin: Luoyang City, Henan Province
Product Description
Product Description

AISI S-2 Tool Steel Balls are designed to achieve extreme ruggedness.The ball surface has a smooth ground and polished finish.These balls provide the toughness and strength necessary for severe shock loads.S-2 Tool Steel Balls are hardened throughout and have unusually good wear characteristics.

S-2 Tool Steel Balls find most frequent use in oil field equipment and offshore drilling operations.They provide good service in withstanding the abrasion of pulverized rock and mud slurries.
S-2 Tool Steel S-2         A-681T-41902  
Additional testing may be required to certify that materials comply with specific standards.

S-2 Tool Steel (Rockbit) Balls are manufactured to the following chemical analysis:
Chemical Analysis
Carbon0.47% to 0.55%
Manganese0.30% to 0.50%
Silicon0.90% to 01.10%
Molybdenum0.30% to 0.60%
Phosphorus0.030% maximum
Sulphur0.030% maximum
Vanadium0.5% maximum

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 inches7%
Reduction in area25%
Modulus of elasticity
30,000,000 psi
0.283 lbs./

GradeSize Range in Inches and Millimeters
50-2003/16"-6"  4.7625mm-150mm


1.Firstly we pack the balls in cartons.
One type inside has two cartons.
For each carton,  length: 22cm  width:17cm   height:10cm  
Another type inside has four cartons:
For each carton, length: 15cm  width:12cm   height:10cm   
2.Then, we pack our balls using wooden pallet in our export business :
1).Put the plastic paper in the pallet(waterproof).
 The size of wooden pallet: 860mmm  800mm  750mm
 2).Put the ball carton into the pallet ,and fix the pallet.
3).Hooping the pallet tightly using the steel rods

About the outside carton:

For each carton,   length: 37cm  width:25cm   height:11cm   

Generally, if you don't want packing with our company's logo and name, we offer neutral packing.
Quqlity Control

Before packing, surface inspection will be made.
First, all the finished products will be visually inspected two times.     
After that, sample inspection is done each batch by visual inspection.

Last, sample inspection again is made by automatic checking and sorting machine.

Why choose Yusion:
1.rofessional manufacturer of steel balls since 1993.
2.The leading domestic facility which can supply high precision steel balls with complete specifications.
3.An integrated set of industry and trade company,professional at before & after sales service
4.Certified by ISO 9001:2000,SGS and D&B quality system certification
5.Strict quality control system,100% inspection.
6.Adequate inventory,on time delivery
7.All inquiries and messages will be replied within 24 hours
8.Free samples can be offered

We will provide customers with quality products, perfect service and fast delivery at competitive pricing! our products are very well known in more than European and other foreign countries. your cooperation and order are warmly welcome!
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Miss Helen
Sales Manager
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