We are producer for silicon nitride grinding ball/silicon nitride bearing ball/ziconia ball/alumina ball/ceramic ball, and is located in beijing.

We own the largest ceramic ball production line in China,production ability come to be larger than 30000000pcs/year,with advanced GPS(Gas Pressure Sintering) or HIP(Heat Isostatic Pressure sintering) technology been applied.Products including precision silicon nitride,zirconia and 99.5%alumina balls with standard and non-standard diameters from 0.8mm to 101.6mm,with quality between Grade 3 and Grade 100.

Usage: For bearings, inspection, grinding,and other rolling conditions.

Specifications of Silicon Nitride balls:

1) 60% lighter than steel

2) Has elastic modulus 50% larger than that of steel

3) Lower friction coefficient, rolls more freely

4) Coefficient of thermal expansion is only one third of that of steel

5) Superior surface finish

6) High-temperature hardness is twice than that of steel

7) Never rust, and can roll without oil or grease

8) Better corrosion resistant than steel

Specifications of Zirconia balls:

1) With density of 6.05g/cm³

2) Fine crystalline

3) Never rust, and can roll without oil or grease.

Specifications of Alumina balls:

1) Materials: >99.5%Al2O3,density:>3.9g/cm3;bending strength:400~500MPa;

2) Usage: for bearings, inspection, and other rolling conditions

4) Capacity: 3,000,000pcs/month,own 200sets grinding equipment

5) Diameter: 2mm ~40mm

6) Precision: G5 ~ G100