STS is an escrow service that protects both buyers and suppliers. Funds are held securely by Made-in-China.com until order terms (e.g., delivery, quality) are fulfilled
| Customization: | Available |
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| Customized: | Customized |
| Certification: | ISO, BV, SGS, Ts 16949 |
| Shipping Cost: | Contact the supplier about freight and estimated delivery time. |
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Payment Guarantee
Platform-protected payments with refund support for eligible order issues.
Platform Logistics
Inspection Service
After-Sales & Dispute Handling
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
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 | |||||
not over | |||||
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 | ±50 |
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