aisi 52100 bearing ball grind metal sphere g1000 8mm 15mm 28.575mm chrome steel ball

Chrome steel is one of a class of non stainless steels such as AISI 52100, En31, SUJ2, 100Cr6, 100C6, DIN 5401 which are used for applications such bearings, tools, drills and utensils.

ASIA Type 52100 Chrome Steel Balls are used in the ball and roller bearing industry and for a variety of automobile applications. These Chrome Steel Balls have excellent surface quality. They offer superior wear resistance, high hardness and high load bearing capacity as a result of through-hardening.

Chrome steel balls are widely used in winder power generation ,precision bearings, bicycle and automotive components, agitators, sliding rails, drawer rails, rocket and other industry.

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1.Raw Material

Each batch of raw material steel is inspected and classified according to different material (carbon, stainless, chrome), size and quantity, which marked with the Material Cert. The qualified steel comes to the quarantine area; the unqualified will be rejected with a record.

2.  Wire Drawing

The steel is made into different sizes according to the needed requirements.

3. Heading

The raw material certified is worked on high-speed casting machines to cast into different size pieces.

4.Flashing

This step of the production process involves rolling the pieces between discs with concentric grooves to eliminate signs of casting and to increase the precision of the ball.

5. Heat Treatment

Heat treatment, where necessary, gives the balls the maximum possible hardness and the best technical characteristics that can be achieved with the materials used.

6.Lapping  i (Grinding)

Successively several careful grinding processes using ceramic grinding wheels give greater dimensional precision and prepare the balls the next, final lapping process. 

7. lapping ii

 This procedure gives the ball a perfectly shiny, compact and defect-free surface, with very low surface roughness, much lower than that required under GB/308-2002

8. Selecting and Final Inspection

The sorting machines together with the manual detecting  and  modern testing processes, largely ensures the high quality of our products.

Feicheng City Tianyuan Industry and Trade Co., Ltd., established in 1999 and with headquarters situated at the foot of the world-famous Mount Tai ---- Tai’an City, has experienced a glorious history of twenty years. The company covers a floor area of 40,000m2 and currently has about 100 employees, including 28 technicians ---- 16 senior technicians. Moreover, the company has advanced production equipment and perfect inspection instruments, including 96 low speed cold headers, 4 high speed cold headers, 24 ball flashing machines, 23 ball crushers, 83 lapping machines and 9 heat treatment devices, and it can further ensure the reliable product quality through the comprehensive inspection realized by Rockwell apparatus, electronic compression-testing machine, optical microscope, metallographic microscope, appearance profile meter, laser surface roughmeter, automatic appearance detector and steel ball vibration testing meter. With strong production technology and rich product categories (steel ball, bearing steel ball, stainless steel ball), the company has the steel ball production of 5,000t and accordingly becomes a private professional steel ball manufacturer integrating scientific research, production, commerce and trade. The products are sold in more than thirty countries and regions, including Europe and America, Southeast Asia, South Asia, the Middle East and Africa, and the average annual export amount is more than 10,000,000 US dollars.

Inspection Instrument

For the past years, our export amount has reached more than six millions dollars. ,Our customers come from America,England,Italy,Germany, Russia, Turkey, France, Belgium, Brazil, Thailand, Mexico, India, Slovenia and many other countries all over the world.

Q:Are you the factory or trade company?

A:Yes, we are professional the original factory of steel balls.

Q:Free sample can be provied?

A:Of course, we can.Free samples can be offered for your quality check.

Q:What's the inspection method to ensure the quality of steel balls?

A:Roller sorting, optical machine sorting and visual inspection.

Q:How is the after sales service?

A:Please contact us in 24 hours freely.We will reply you in 1 hour.

Q: Can I come visit your office and factory?

A:Yes, and we shall be greatly honored by your gracious presence.

Q: What is your delivery time for the order?

A: Normally our delivery time is 15-20 days, but if we have the products you want in our stock, the delivery time will be in about one week or less.

Q: Which country is your main market now?

A: Mid-East, North Africa, West Africa, South-east Asia, South America and Northern Europe district. Especially, a firm customer base in Saudi, Morocco, Nigeria, India, Bangladesh, and Russia etc.