G10 440C 3.175mm 4mm 3.969mm stainless steel ball

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 closeas ±.0001".

Lapping: 

  Several proprietary lapping processes can bring balls to the requirements of ISO 3290 Grade10 - 48. 

Finishing: 

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

Ningyang Xinxin Stainless Steel Ball Manufacture Co., Ltd is one of famous and professional stainless steel ball factory from china .

We have two professional factory to produce steel ball ,one is in Shandong province(5000 square meters),other one is in Henan province (10000 square meters ) . 

With over 20years history,our factory have good reputation from our customers and government,so our factory passed ISO9001:2008 and our products got SGS,RHOS Certificates .

We mainly produce stainless steel ball (201, 304, 316, 420,420C,440C,430). also produce chrome steel ball (AISI52100,100CR6,GCR15),carbon steel ball(1015,1010,1045,1085), copper brass balls, plastic ball,glass ball,Tungsten carbide ball, flying saucer ball, polishing media ball,ceramic ball,Aluminum ball and other kinds of material ball.

We have the ability to provide many kinds of steel ball, of which accuracy range is G10-G1000,size 0.4mm-50.8mm. The brand "XinXin" is trusted deeply by customers. Our products have been widely applied in the hardware goods form a complete set for the aviation and spaceflight industry, automobiles, sprayers, stainless steel bearings, and handicraft and precision instruments.
We have advanced production equipment and consummative instruments. We use perfect equipment to detect the roundness, libration size and the quality of the surface of steel balls.
Welcome to visit our factory and looking forwarder to cooperate with you !

1. Ball chose by people 

2. Ball select by machine

3. Ball test by Vernier calipe

4. check ball surface by magnifying glass

5. Ball test by three needle gauge

6. Ball test hardness by hardness tester

Our factory already get ISO and our products already passed SGS,FDA,ROHS certificate as below :

Glass ball ,plastic ball ,Ballcone ,Brass ball,Ceramic ball