Basic Info.
Product Description
Custom service to meet our customers' needs are our core strength.
The factory produces ball sizes from 0.5mm to 250mm.
Solid Half Balls: Stainless Steel.
201: Special bearings, automotive components, switches, die casting devices. They are widely used in the electronic industry.
304: Special bearings and pumps, aerosol pumps, gardening and household sprayers, perfume miniature pumps, seams, medical application valves, agricultural backpack sprayers. They are used in foodstuff, aerospace.
316: Special bearings, pumps and valves, aerosol and dispenser sprayers. Utilised in the foodstuff, paper, chemical, rubber, textile industry. Applications in photographic devices, medical instruments, quick couplings, recirculating balls, ink cartridges, jewels.
420C: Special bearings, anti-friction bearings, special pumps, recirculating balls, lighters, pens, automotive seatbelts & components.
440C: Precision bearings, anti-friction bearings, special valves, conveyor belts and rollers, ballpoint pens. They are used in foodstuff, medical instruments, quick couplings, recirculating ball bearings, knotting devices, oil refinery devices.
| Mechanical Properties | |||||
| 201 | 304 | 316 | 420C | 440C | |
| Density | 7.85 g/m3 | 7.95 g/m3 | 7.95 g/m3 | 7.70 g/m3 | 7.75 g/m3 |
| Hardness | 25 - 39 HRC | 10- 39 HRC | 10 - 39 HRC | 52 - 60 HRC | 57 - 65 HRC |
| Tensile Strength | 100 - 180 PSI×103 | 72 - 188 PSI×103 | 80 - 180 PSI×103 | 250 - 275 PSI×103 | 275 - 290 PSI×103 |
| Young's Modulus | 200 GPa | 200 GPa | 200 GPa | 205 GPa | 210 GPa |
| Grade: G10 to G1000 | |||||
| Grade | ball diameter | spherical | surface | lot diameter | nomainal ball |
| variation | deviation | roughness | variation | deviation tolerance | |
| Vdws | Sph | Ra | Vdwl | Tdn | |
| not over | |||||
| μm | |||||
| 10 | 0.25 | 0.25 | 0.02 | 0.5 | * |
| 16 | 0.4 | 0.4 | 0.025 | 0.8 | * |
| 20 | 0.5 | 0.5 | 0.032 | 1 | * |
| 24 | 0.6 | 0.6 | 0.04 | 1.2 | * |
| 28 | 0.7 | 0.7 | 0.05 | 1.4 | * |
| 40 | 1 | 1 | 0.06 | 2 | * |
| 60 | 1.5 | 1.5 | 0.08 | 3 | * |
| 100 | 2.5 | 2.5 | 0.1 | 5 | ±12.5 |
| 200 | 5 | 5 | 0.15 | 10 | ±25 |
| 500 | 12.5 | 12.5 | * | 25 | ±50 |
| 1000 | 25 | 25 | * | 50 | ±125 |
