High quality 4.763mm magnetic chrome steel balls with ISO

Production Flow

Heading: In the first step, heading machines cut wire into short lengths and form it into spherical shapes between dies.

Deflashing: The flash line, a ridge left by the forming dies, is removed as balls roll between heavy, cast iron plates.

Soft Grinding: Similar to deflashing, except that a grinding stone is used to improve precision.

Heat-treating: Carbon steel balls are next carburized and hardened. Heat treatment imparts the desired hardness and case depth.

Descaling: This step removes the residues and by-products from the heat-treating process.

Hard Grinding: Slow meticulous grinding assures proper sizing and sphericity, with tolerances as close as ± 0.001".

Lapping: Several proprietary lapping processes can bring balls to the requirements of ISO 3290 Grade 10-48.

Finishing: Proprietary chemical and mechanical processes give the balls their final micro-smoothed finish, for increased wear resistance and product longevity.

Inspection: All products pass throughat least two 100% inspection stages, using proprietary, automated inspection processes.

CHANGZHOU SUNRISE STEEL BALL CO.,LTD

The Sunrise steel ball Co.,Ltd locates in the east of Taihu, next to Shanghai, with very convenient transportation. Our company has specialized in manufacturizing steel ball for more than 20 years, integrating scientific research and sales into one single entity.

Over these years, the persons of our company have been based on Research Institude of steel ball in Wujin ,continuing to focus on the research and development of manufacturing technology of steel ball. We mainly manufacture 1-50.8mm chrome steel（AISI52100）, carbon steel（AISI1015.1045.1085）, stainless steel（AISI304.316.420.440C）,Alloy steel ball, copper ball and many other kinds of metallic balls, which extensively apply to bearings, motor vehicle, electric tools, lead rail , ball rack and enjoy a worldwide trust and appreciation. Meanwhile, the flying saucer that we manufactureis adopted in light field.

Unity, integrity, precious , diligence is our spirit . We are eager to develop with people all around the world shoulder to shoulder for a better future.

Q: Are you trading company or manufacturer ?

A: We are factory.

Q: How long is your delivery time?

A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.

Q: Do you provide samples ? is it free or extra ?

A: Yes, we could offer the sample for free charge but do not pay the cost of freight.

Q: What is your terms of payment ?

A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
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