Reliable Stainless Steel Precision Balls – Factory Direct from China
If you are sourcing stainless steel precision balls for bearings, valves, or automotive components, you need consistency in tolerance, material purity, and on-time delivery. Shijiazhuang TJJ TRADE CO.,LTD. leverages over 20 years of metal manufacturing expertise to produce precision balls in 304, 316, and 440C stainless steel, with ISO 9001 quality control, low MOQ options, and fast lead times. We serve import managers, brand owners, and wholesalers across the USA, Europe, and South America.
Why Procurement Teams Struggle with Precision Ball Suppliers
Import managers often face three major challenges: inconsistent roundness and surface finish, long production delays, and rigid minimum order quantities that lock up working capital. Our approach directly addresses these pain points.
- Inconsistent Quality – We implement multi-stage inspection (dimensional, hardness, surface roughness) on every batch. Our rejection rate is below 0.3%.
- Long Lead Times – Our streamlined supply chain and in-house grinding/lapping lines allow 15-25 working days for standard orders.
- High MOQ Restrictions – MOQ starts from 1,000 pieces, enabling pilot runs and small-scale projects without overstocking.
Our factory floor – advanced grinding and lapping equipment for G10-G100 tolerances
Technical Specifications & Customization Capabilities
| Parameter | Available Options / Range |
|---|---|
| Material Grades | AISI 304, 316, 316L, 440C, 420C (other grades upon request) |
| Diameter Range | 1.0 mm – 50.8 mm (custom sizes up to 100 mm under OEM/ODM) |
| Tolerance Grades | G10, G25, G100, G200 (conforming to ISO 3290 / AFBMA standards) |
| Hardness (HRC) | 440C: 58-62 HRC; 304: 170-210 HB (annealed) |
| Surface Finish (Ra) | ≤ 0.025 μm for precision grades; ≤ 0.1 μm for commercial grades |
| Certifications | ISO 9001:2015 (QMS), material test reports, RoHS compliance |
| MOQ | 1,000 pcs per size/grade (negotiable for initial orders) |
| Lead Time | 15-25 working days for standard orders; 30-40 days for large or custom runs |
| Packaging | Anti-rust oil + sealed poly bags + cartons/pallets; export-worthy (IPPC heat-treated pallets if required) |
| OEM/ODM Support | Custom packaging, branding (laser engraving), non-standard grades, mixed containers |
Note: All specifications are typical values. Final parameters shall be confirmed in the order contract. Please inquire for specific requirements.
Why Importers Trust Shijiazhuang TJJ as Their Precision Ball Partner
Our parent foundry has operated for over 20 years, employing 150+ skilled workers and covering 25,000 m² of production area. We have exported to the USA, South America, Europe, and Africa, building long-term relationships with brands and distributors.
Our main foundry and finishing workshop
CMM and roundness testing station
What Our Global Clients Say
"We have been sourcing 316L precision balls for flow control valves. TJJ’s batch consistency and on-time delivery have been outstanding. Their G25 tolerance holds well in our final assembly. Highly recommend for quality-conscious buyers."
"Low MOQ was critical for our new product line. TJJ accepted 2,000 pieces of 440C balls with custom engraving. The lead time was 18 days – faster than our previous supplier. Great communication from the sales team."
"We needed stainless steel precision balls for oil & gas instrumentation. TJJ provided full material certificates and third-party inspection reports. The surface finish was even better than expected. We've increased our order volume three times in one year."
"Price and quality are both important. TJJ’s pricing is competitive without sacrificing tolerance. Their after-sales support is responsive – they even helped us with a custom packaging design for our retail chain."
"We transitioned to TJJ after facing supply issues from another Asian supplier. Their OEM service – including private labeling and custom lapping – allowed us to launch our own ball product line. Excellent partner for brand owners."
Where Precision Stainless Steel Balls Are Used
- Bearings & Linear Guides – G10-G25 balls for high-speed, low-noise applications.
- Valves & Flow Control – 316L balls for corrosion-resistant ball valves in chemical/petrochemical plants.
- Automotive Components – 440C hardened balls for steering systems, pumps, and injectors.
- Medical Devices – 304 stainless steel balls for surgical instruments and drug delivery systems (non-implantable).
- Food Processing Equipment – 316L balls for pumps and mixers that require frequent sanitization.
- Decorative & Architectural Hardware – Polished 304 balls for handrails, gate fittings, and cast iron accessories (our traditional line).
David Miller
Senior Manufacturing Engineer – 15 years in precision metal components
3 inch steel ball 3 inch steel ball metall balls
"I have worked with suppliers across Asia, and Shijiazhuang TJJ stands out for combining decades of casting experience with modern grinding technology. Their ability to handle both large OEM runs and small specialty orders makes them a flexible partner for any supply chain."
Export Terms & Support Services
| Service | Details |
|---|---|
| Incoterms | FOB (Tianjin/Qingdao), CIF, CNF, EXW – flexible per your preference |
| Payment Methods | T/T (30% deposit, 70% against B/L copy), L/C at sight, Western Union for small amounts |
| Minimum Order (MOQ) | 1,000 pcs per size; 500 pcs for trial orders (subject to confirmation) |
| Lead Time | Standard: 15-25 working days; rush orders available for additional charge |
| After-Sales | Quality claims handled within 30 days of receipt; replacement or credit as per contract |
| Free Samples | Sample pieces (up to 10 pcs) available for evaluation – freight collect |
Ready to Secure Your Supply of Premium Stainless Steel Precision Balls?
Contact our sales team today for a quick quote, technical datasheet, or to discuss your custom requirements.
Tel / WhatsApp: +86-15511680668
Email: sindyhao2014@163.com
Contact Page: https://www.tjjironcastings.com/contactus.html
Add: Shijiazhuang, Hebei Province, China
All technical data are for reference only. Final specifications shall be agreed upon in the sales contract.
