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The R4‑2RS Ball Bearing with Extend Inner Ring is manufactured by Ningbo Hongtai Bearing Co., Ltd in Zhejiang, China. It is made from Chrome Steel GCr15, a carbon‑chromium alloy commonly used for precision bearings. The bearing features a deep‑groove design with double rubber seals (2RS) that protect against dust and moisture. Its standard dimensions are 6.35 mm bore, 15.875 mm outer diameter and 4.987 mm width, with extended inner‑ring options such as B7.14, B9.04, B11.4 and B12.5.
In the bearing industry, this size class typically carries a dynamic load rating near 1.2 kN and a static load rating around 0.8 kN, which support medium‑speed motor applications. The common limiting speed for GCr15 deep‑groove bearings is up to 12 000 rpm, and the ABEC‑3 tolerance class is often applied to similar miniature bearings. The double‑seal arrangement provides a typical protection class of IP68, suitable for environments with occasional water exposure. These specifications make the R4‑2RS suitable for motors, conveyors, agricultural machinery and medical equipment where compact, reliable shaft support is required.
Ningbo Hongtai Bearing Co., Ltd offers the bearings in bulk cartons and can customize the extended inner‑ring length to match specific shaft designs. Shipping is available on FOB or CIF terms from Chinese ports, allowing importers to arrange freight and customs according to their schedule. Buyers should request the supplier’s material test report and confirm the exact MOQ before placing an order. The product is positioned for B2B distributors, equipment manufacturers and OEMs that need precision‑engineered bearing components.
| Material | Chrome Steel GCr15 (Carbon Chromium Steel) |
| Bearing type | Deep groove ball bearing, double rubber seals (2RS) |
| Bore diameter | 6.35 mm (typical) |
| Outer diameter | 15.875 mm (typical) |
| Width | 4.987 mm (typical) |
| Extended inner‑ring options | B7.14, B9.04, B11.4, B12.5 |
| Dynamic load rating | 1.2 kN (typical) |
| Static load rating | 0.8 kN (typical) |
| Limiting speed | 12 000 rpm (typical) |
| Tolerance class | ABEC‑3 (typical) |
Ningbo Hongtai Bearing Co., Ltd is situated at No. 42 Beiyihuan Rd, Zhangqi Industrial Zone, Cixi, Ningbo, Zhejiang, China. The company holds a harbor trust tier on the verification platform and currently shows a 0 % response rate with no average response time recorded, so early contact is advisable for timely communication.
The supplier specialises in precision bearing production, offering a range of miniature deep‑groove ball bearings with double seals. Its catalogue includes standard dimensions as well as extended inner‑ring variants designed to reduce overall cost for OEM applications. Bulk packaging is provided in sturdy cartons, and the firm states compliance with international material standards, though specific certificates should be requested directly. Hongtai targets distributors, equipment manufacturers and OEMs that require reliable shaft support components.
The R4-2RS is a miniature deep groove ball bearing with double rubber seals, featuring an extended inner ring for enhanced shaft support. Standard dimensions are 6.35 x 15.875 x 4.987mm, with customized extended options including B7.14, B9.04, B11.4, and B12.5 variants. Widely used in motors, conveyor systems, agricultural machinery, medical equipment, and automation devices. Ideal for B2B buyers seeking precision components with reliable sealing performance in industrial applications.
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Prior to ordering, confirm the exact steel grade and request the supplier’s material test report to verify GCr15 composition. Verify the seal type and protection class, especially if the bearings will operate in dusty or moist environments. Ask for a detailed drawing of the extended inner‑ring options to ensure they match your shaft design.
Plan logistics around the FOB or CIF incoterms offered by the supplier. Identify the departure port in China, arrange freight forwarding, and estimate transit time to your destination port. Payment terms are not disclosed, so negotiate a suitable schedule such as a deposit against a pro‑forma invoice and balance upon presentation of shipping documents.
Implement a quality assurance process that includes a pre‑shipment inspection by a third‑party agency. Check dimensional tolerances, seal integrity and surface finish against the specifications provided. Ensure that the shipment includes the material test report, certificate of conformity and a certificate of origin to streamline customs clearance at the destination.
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When sourcing R4-2rs Ball Bearing Extend Inner Ring for your business, securing the right balance of quality and cost is essential. Ningbo Hongtai Bearing Co., Ltd, a verified supplier based in China, offers this product with key specifications including R4-2RS, Deep Groove Ball Bearing with Extended Inner Ring, Double Sealed (2RS), 6.35 x 15.875 x 4.987 mm (Bore x OD x Width), and B7.14 / B9.04 / B11.4 / B12.5 (customized variants). By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $0.95/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is actively traded under HS Code 8482.10.50, making it a staple in the Bearing sector with strong demand from importing countries worldwide.
Importing R4-2rs Ball Bearing Exten requires careful attention to shipping logistics, customs compliance, and secure payment terms. Ningbo Hongtai Bearing Co., Ltd 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 8482.10.50 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 import export marketplace designed to make cross-border trade secure and efficient.
Finding trustworthy partners is the foundation of successful importing. The supplier of this R4-2rs Ball Bearing Exten 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 online B2B marketplace. Start your sourcing journey today.
Importing R4-2rs Ball Bearing Exten 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 8482.10.50 in their destination country. Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P).
The current listed wholesale price for R4-2rs Ball Bearing Extend Inner Ring from Ningbo Hongtai Bearing Co., Ltd is $0.95/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 Ningbo Hongtai Bearing Co., Ltd through EximNext.
The supplier, Ningbo Hongtai Bearing Co., Ltd, has set a Minimum Order Quantity (MOQ) of 1 Bags for R4-2rs Ball Bearing Exten. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
For international shipping and customs clearance, R4-2rs Ball Bearing Extend Inner Ring is classified under HS Code 8482.10.50. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
To import R4-2rs Ball Bearing Exten from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Ningbo Hongtai Bearing Co., Ltd. Ensure you have the necessary import licenses for Bearing products in your destination country.
Yes, Ningbo Hongtai Bearing Co., Ltd 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.
The key specifications for R4-2rs Ball Bearing Extend Inner Ring supplied by Ningbo Hongtai Bearing Co., Ltd include R4-2RS, Deep Groove Ball Bearing with Extended Inner Ring, Double Sealed (2RS), 6.35 x 15.875 x 4.987 mm (Bore x OD x Width), and B7.14 / B9.04 / B11.4 / B12.5 (customized variants). For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to the supplier through EximNext.
Ningbo Hongtai Bearing Co., Ltd offers R4-2rs Ball Bearing Exten with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
R4-2rs Ball Bearing Exten is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Ningbo Hongtai Bearing Co., Ltd through our platform.
Ningbo Hongtai Bearing Co., Ltd maintains international quality certifications. These ensure that the R4-2rs Ball Bearing Exten meets international quality, safety, and regulatory standards required for cross-border trade.
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Ningbo Hongtai Bearing Co., Ltd will respond with a detailed wholesale quote including FOB pricing, lead time, and payment options.
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 Ningbo Hongtai Bearing Co., Ltd.
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