Full Procurement Process
Frequently Asked Questions

We hold an official Authorized Distributor Certificate issued by NTN Corporation. The certificate number can be verified through NTN's official authorized distributor lookup system. Every batch of goods is accompanied by an NTN factory Certificate of Conformance (COC) and an authorization chain traceability document, both of which can be provided at the time of delivery.

Yes. Every batch comes with an NTN factory Test Report containing 17 key parameters including heat number, dimensional tolerances, vibration values (ABEC grade), and noise levels. Via the product's Laser ID, each unit can be traced back to its specific batch, warehouse record, and shipment date in our WMS system.

Genuine NTN products feature multiple layers of anti-counterfeiting: ① Packaging QR code -- scannable via the official NTN app for instant verification; ② Laser engraving -- font depth and spacing conform to NTN factory standards; ③ Steel stamp markings -- clear and burr-free, whereas counterfeits typically show blurred or uneven depth; ④ Security label (select models) -- scratch to reveal a unique verification code. If you have any doubts about product authenticity, contact us for third-party inspection support.

Yes. We can provide a complete export document package including: Certificate of Origin (CO / Form E / EUR.1), Commercial Invoice, Packing List, Bill of Lading (B/L or AWB), and NTN factory authorization certificate. For customers requiring specific preferential origin certificates such as FORM E (China-ASEAN FTA) or FORM D, please inform us of the destination country at the time of ordering and we will coordinate the appropriate documentation.

Standard in-stock models (deep groove ball bearings, cylindrical roller bearings, and other common series) have no minimum order quantity -- single-piece sample purchases are supported. Bulk orders (typically ≥ 100 pcs/model) qualify for tiered pricing discounts. MOQ for non-standard or OEM custom models is negotiated based on specific operating conditions, typically 500-2,000 pcs.

Submit your model numbers and quantity requirements via the inquiry form at the bottom of this page or via WhatsApp (+86 150 0033 3771). We will provide a formal quotation within 24 hours containing: unit price (including tiered pricing), lead time, payment terms, packaging specifications, applicable HS codes, and brand authorization certificate. The quotation is delivered as a PDF and can be used directly in your procurement approval process.

We support multiple international trade payment methods. T/T (Telegraphic Transfer) is the primary method -- standard orders are accepted with 30% advance payment + 70% against copy of B/L. Large-volume long-term clients may negotiate L/C (Letter of Credit) terms. We also support PayPal and Western Union for small sample orders. Specific terms are subject to the signed contract.

Yes. Clients who sign annual or multi-year framework agreements enjoy: dedicated inventory reservation (ensuring batch consistency), locked-in price protection (hedging against raw material fluctuations), priority delivery scheduling, and a dedicated account manager for full-cycle follow-up. Framework agreements typically require an annual purchase volume commitment; specific thresholds are negotiable.

We cover the full NTN product range including: deep groove ball bearings, angular contact ball bearings, cylindrical roller bearings, tapered roller bearings, spherical roller bearings, thrust bearings, and precision crossed roller bearings for robotics -- totaling over 12,000+ SKUs. For non-standard models, we can source through NTN's factory channel; lead times vary by model (typically 4-12 weeks).

In-stock models (real-time inventory visible in our WMS): goods are prepared and dispatched within 1-3 business days after payment. International express (DHL/FedEx) delivery times vary by destination, typically 5-10 business days. Sea freight LCL is approximately 15-35 days; FCL depends on the shipping route. Non-stock models require sourcing from NTN's factory, with lead times typically 4-12 weeks -- confirmed clearly before order placement.

We provide global door-to-door logistics services covering 50+ countries. Available shipping options include: international express (DHL / FedEx / UPS), air freight, sea freight LCL, FCL, and rail transport (China-Europe Railway Express). Quotations are available under multiple trade terms including EXW / FOB / CIF / DAP, with corresponding documentation issued per client requirements.

We provide a complete export clearance document package: Commercial Invoice, Packing List, Bill of Lading / Air Waybill, Certificate of Origin (CO), NTN brand authorization letter (proving genuine product origin), and HS code declaration. For destinations subject to anti-dumping duties or special import controls (e.g., India, USA), our customs specialists can proactively confirm compliance solutions to prevent clearance obstacles.

All goods are packed in standard industrial packaging (moisture-proof, shock-resistant, anti-static) before dispatch, with optional all-risk transit insurance (insured at 110% of cargo value). In the event of transit damage, please photograph the damage and notify us within 48 hours of receipt. We will assist with the carrier claim process and prioritize arranging a replacement shipment.

OEM customization follows four stages:

1. 1
   Requirements Confirmation (24H): Submit operating parameters (speed, load, temperature, installation dimensions). A senior application engineer provides a model selection proposal and quotation.
2. 2
   Sample Production (5-7 Business Days): NTN factory or authorized facility produces the first article sample, accompanied by a complete inspection report.
3. 3
   Pilot Production: After client validation, a small pilot batch (100-500 pcs) is produced to confirm consistency and process stability.
4. 4
   Mass Production & Delivery: A framework agreement is signed for scheduled batch deliveries; dedicated inventory reservation ensures production continuity.

Customizable options include: non-standard dimensions (bore / OD / width), precision grade (P0-P2 / ABEC 1-9), material (standard bearing steel / stainless steel / ceramic hybrid), sealing type (open / single/double rubber seal / metal shield), grease (high-temperature / food-grade / low-noise), cage material (steel / brass / nylon PEEK), and surface treatment (phosphating / chrome plating).

Our technical team has 10+ years of industry experience and can provide: application-based selection calculations (L10 life estimation, fit tolerance recommendations), installation guidance manuals (including press-fit and thermal mounting methods), lubrication scheme design, failure analysis reports (for batch quality issues), and on-site technical support for co-development with OEM customers.

Flexible branding options are available. Clients may choose: retain the NTN brand identity (for OEM scenarios requiring brand endorsement), use a customer's own brand (white label, subject to minimum order quantity), or dual-brand co-printing. All white-label products retain a traceable internal batch number to ensure quality control. Please contact your sales manager to discuss specific arrangements.

The standard warranty period is 12 months from the date of delivery, or as specified in the contract. Coverage includes: early failures caused by material defects, dimensional non-conformance, and inspection oversights occurring under normal operating conditions (in compliance with NTN installation standards). Not covered: damage resulting from improper installation, overloading, contamination ingress, or inadequate lubrication.

Please submit your claim via WhatsApp (+86 150 0033 3771) or email (info@ntnoem.com), providing: order number / batch number, issue description, photos of the defect, and failed samples (if required). We will acknowledge receipt within 48 hours and provide a preliminary analysis conclusion within 7 business days. For confirmed quality liability, we will prioritize arranging a replacement shipment or refund, along with an 8D analysis report.

For disputed quality issues, we support commissioning an internationally accredited third-party inspection body (e.g., SGS, TÜV, BV) for independent testing. Inspection costs are shared based on the liability determination outcome. We commit to full cooperation by providing original batch inspection data, heat number records, and MES traceability information to ensure a transparent and fair dispute resolution process.

Yes. For batch quality issues or reported abnormal early failures, our technical team can issue a professional Failure Analysis Report (FAR) covering: failure mode identification (fatigue spalling / wear / corrosion / cage fracture, etc.), Root Cause Analysis (RCA), and improvement recommendations (model selection optimization / installation process / lubrication adjustments). The report serves as a technical basis for upgrading procurement specifications in future orders.