Import Dia. 0.3mm~30mm Grade 5 Ruby Ball Bearing — Buy in wholesale FOB from Supplier in China
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The product is a grade 5 synthetic ruby ball bearing offered in diameters ranging from 0.3 mm to 30 mm. Each bearing is machined from synthetic ruby corundum (Al₂O₃) that provides a hardness of about 9 on the Mohs scale. The supplier lists the bearings as suitable for high‑precision applications where metal‑to‑metal friction must be avoided. The bearings are supplied individually, allowing custom quantity selection across the full size range.
In the precision engineering sector, ruby bearings of this grade are classified as Grade 5, meaning they meet the standard tolerance of ±0.001 mm and a sphericity error under 0.5 µm, typical for watchmaking and aerospace instrumentation. The synthetic corundum base gives a low coefficient of friction, generally below 0.1, and excellent corrosion resistance, which is why they replace steel pivots in environments with extreme temperature variation. Typical alternatives include ceramic silicon nitride, but ruby offers superior hardness and wear resistance for the smallest diameters.
Buyers such as watch manufacturers, medical device makers and aerospace navigation system integrators are the main market for these bearings. The supplier offers bulk packaging and can ship under FOB or CIF terms, though exact Incoterms and payment conditions should be verified directly. Prospective importers are advised to request the supplier’s material test reports and certification of grade 5 compliance before placing an order.
| Material | Synthetic Ruby Corundum (Al₂O₃) |
| Diameter Range | 0.3 mm - 30 mm (custom selectable within this range) |
| Hardness (Mohs) | 9 (typical for ruby, standard for high‑precision bearings) |
| Grade | Grade 5 (standard for ruby bearings, tolerance ±0.001 mm, sphericity <0.5 µm) |
| Coefficient of Friction | ≤0.1 (typical for ruby on steel contact) |
| Typical Tolerance | ±0.001 mm (standard for Grade 5 ruby bearings) |
| Sphericity Error | <0.5 µm (standard specification) |
| Typical Packaging | Bulk pack of individual units, standard for precision bearings |
| Standard Compliance | ISO 9001 quality management (supplier states compliance, confirm) |
| Typical Application Temperature Range | -50 °C to +150 °C (standard for synthetic ruby bearings) |
Sjllaser Technology Limited is located at Zhihui Building, Xinsha Road, Shajing Street, Bao'an District, Shenzhen 518104 Guangdong, China. The supplier holds a harbor trust tier, indicating a basic level of platform verification. No response rate or average response time is published, so buyers should initiate contact early to ensure timely communication.
The company presents itself as a technology‑focused manufacturer offering specialised synthetic ruby bearings among other precision components. While the profile mentions adherence to ISO 9001 quality management, the actual certification documents are not displayed and should be requested by importers before committing to purchase.
Grade 5 synthetic ruby ball bearings range from 0.3mm to 30mm in diameter and are manufactured from corundum gemstone material, offering exceptional hardness, abrasion resistance, and a low friction coefficient ideal for precision instrumentation. These ruby pivot bearings are widely used in watchmaking, medical devices, aerospace navigation systems, and high-precision scientific equipment where metal friction must be eliminated. As a specialized industrial bearing for export, synthetic ruby ball bearings serve a niche but critical role in global precision engineering supply chains.
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Sourcing Dia. 0.3Mm~30Mm Grade 5 Ruby Ball Bearing from Sjllaser Technology Limited - China Import Guide
Importers should first obtain the supplier’s material test report and a certificate confirming Grade 5 compliance, as these documents verify that the bearings meet the stated hardness, tolerance and sphericity specifications. Because the supplier does not publish a response rate, establishing clear points of contact and confirming documentation availability early helps avoid delays.
Logistical details such as the preferred Incoterm (FOB or CIF), estimated production lead time and the shipping method (typically sea freight for bulk quantities) need to be confirmed with the seller. Payment terms, including any requirement for a letter of credit or advance T/T, should be agreed in writing before shipment to protect both parties.
Upon arrival, buyers are advised to perform a dimensional inspection using a calibrated micrometer, verify hardness with a Vickers tester if required, and review the supplied test report. A full inspection certificate, packing list and commercial invoice should accompany the shipment to ensure smooth customs clearance and traceability of the ruby bearings.
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30 suppliersBuy Dia. 0.3mm~30mm Grade 5 R in Bulk — Verified Supplier in China
When sourcing Dia. 0.3mm~30mm Grade 5 Ruby Ball Bearing for your business, securing the right balance of quality and cost is essential. Sjllaser Technology Limited, a verified supplier based in China, offers this product with key specifications including Grade 5 (ABEC-5 / ISO 10), Synthetic Corundum (Ruby), Al2O3, and Diameter: 0.3mm to 30mm. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $0.15/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is actively traded under HS Code 8482.10, making it a staple in the Bearing sector with strong demand from importing countries worldwide.
Dia. 0.3mm~30mm Grade 5 R Specifications, Trade Terms & Pricing
Importing Dia. 0.3mm~30mm Grade 5 R requires careful attention to shipping logistics, customs compliance, and secure payment terms. Sjllaser Technology Limited offers flexible shipping options such as Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. To ensure a smooth transaction, buyers should verify import duties for HS Code 8482.10 in their destination country. Common payment methods for international B2B transactions include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P). All transactions and RFQs are facilitated through EximNext, a leading B2B marketplace designed to make cross-border trade secure and efficient.
About Sjllaser Technology Limited — Supplier in China
Finding trustworthy partners is the foundation of successful importing. The supplier of this Dia. 0.3mm~30mm Grade 5 R has been verified on our platform. Whether you are a distributor, wholesaler, or procurement manager, you can request a free quotation, ask for product samples, and finalize your bulk purchase with confidence. EximNext hosts thousands of verified manufacturers and exporters across 200+ countries. Explore similar products in the Bearing category and connect with top-tier exporters on our comprehensive global B2B marketplace. Start your sourcing journey today.
Import Dia. 0.3mm~30mm Grade 5 R — Shipping, Logistics & Customs
Importing Dia. 0.3mm~30mm Grade 5 R requires careful attention to shipping logistics, customs compliance, and secure payment terms. Common shipping options include Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. Buyers should verify import duties for HS Code 8482.10 in their destination country. Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P).
Frequently Asked Questions About Dia. 0.3mm~30mm Grade 5 R
What is the wholesale price of Dia. 0.3mm~30mm Grade 5 Ruby Ball Bearing?
The current listed wholesale price for Dia. 0.3mm~30mm Grade 5 Ruby Ball Bearing from Sjllaser Technology Limited is $0.15/Bags on FOB terms from China. Prices may vary depending on order volume, packaging, and destination. For the most accurate bulk quote, send a direct RFQ to Sjllaser Technology Limited through EximNext.
What is the Minimum Order Quantity (MOQ) for Dia. 0.3mm~30mm Grade 5 R?
The supplier, Sjllaser Technology Limited, has set a Minimum Order Quantity (MOQ) of 1 Bags for Dia. 0.3mm~30mm Grade 5 R. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
What is the HS Code for Dia. 0.3mm~30mm Grade 5 Ruby Ball Bearing?
For international shipping and customs clearance, Dia. 0.3mm~30mm Grade 5 Ruby Ball Bearing is classified under HS Code 8482.10. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
How can I import Dia. 0.3mm~30mm Grade 5 R from China?
To import Dia. 0.3mm~30mm Grade 5 R from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Sjllaser Technology Limited. Ensure you have the necessary import licenses for Bearing products in your destination country.
Is Sjllaser Technology Limited a verified supplier?
Yes, Sjllaser Technology Limited is a verified supplier on EximNext. You can view their complete company profile, business registration details, certifications, and export history before placing a bulk order.
What are the key specifications of Dia. 0.3mm~30mm Grade 5 Ruby Ball Bearing?
The key specifications for Dia. 0.3mm~30mm Grade 5 Ruby Ball Bearing supplied by Sjllaser Technology Limited include Grade 5 (ABEC-5 / ISO 10), Synthetic Corundum (Ruby), Al2O3, and Diameter: 0.3mm to 30mm. For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to the supplier through EximNext.
What packaging options are available for bulk orders of Dia. 0.3mm~30mm Grade 5 R?
Sjllaser Technology Limited offers Dia. 0.3mm~30mm Grade 5 R with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Which countries import Dia. 0.3mm~30mm Grade 5 R the most?
Dia. 0.3mm~30mm Grade 5 R is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Sjllaser Technology Limited through our platform.
What certifications does this Dia. 0.3mm~30mm Grade 5 R supplier hold?
Sjllaser Technology Limited maintains international quality certifications. These ensure that the Dia. 0.3mm~30mm Grade 5 R meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for Dia. 0.3mm~30mm Grade 5 Ruby Ball Bearing on EximNext?
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Sjllaser Technology Limited will respond with a detailed wholesale quote including FOB pricing, lead time, and payment options.
What payment methods are accepted?
Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), Documents against Payment (D/P), and Escrow services. Confirm accepted terms directly with Sjllaser Technology Limited.
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