NTN Bearing Asm

Bearing Sourcing FAQ: Ordering, Logistics and OEM Support

This page works through the questions that come up most often across a full procurement cycle, covering ordering, shipping, quality control, and OEM customization, with consistent answers grounded in ISO 9001 inspection practice and complete batch traceability. Use it to find what you need quickly and cut down on back-and-forth.

QUICK NAVIGATION

Authenticity & Anti-Counterfeiting Verification

How can I verify that you are an officially authorized distributor?

We supply independent compatible replacement bearings rather than authorized branded stock, so authenticity is proven through documents instead of a distributor certificate. Each batch arrives with a factory Certificate of Conformance and a traceability chain record that links it to the producing line, and both are handed over at delivery. If a reference number needs checking, our quality desk verifies it before the goods leave.

Is a traceable quality inspection report provided for each batch?

Yes. Every batch comes with a factory Test Report covering 17 key parameters, among them heat number, dimensional tolerances, vibration values by ABEC grade, and noise level. The Laser ID on each unit lets us trace it to its specific batch, the warehouse record, and the shipment date in our WMS.

TRACEABLE PARAMETERS INCLUDE

How can I identify genuine branded bearings? What anti-counterfeiting features are present?

Brand-original cartons carry several anti-counterfeit layers, and our paperwork mirrors them: ① a packaging QR code, scannable in the maker app for instant verification; ② laser engraving whose font depth and spacing follow factory standards; ③ steel stamp markings that are crisp and burr-free, while counterfeits usually show blurred or uneven depth; ④ on selected models, a scratch label revealing a unique verification code. Where authenticity is in doubt, tell us and we will arrange third-party inspection support.

Can you provide a Certificate of Origin (CO) and proforma invoice for customs clearance?

Yes. A complete export document package comes with the order: Commercial Invoice, a Packing List, and the Bill of Lading or Air Waybill, plus an origin certificate (CO or its preferential variants Form E and EUR.1) and factory conformance documents for the producing line. Where a preferential origin certificate is required, FORM E for the China-ASEAN FTA or FORM D for instance, name the destination country when ordering and we will coordinate the paperwork.

Bulk Ordering & Pricing Policy

What is the minimum order quantity (MOQ)?

In-stock standards such as deep groove ball bearings and cylindrical roller bearings, along with other common series, carry no minimum order quantity, so single-piece samples are fine. Bulk orders, typically 100 pieces per model and up, earn tiered pricing. Non-standard or OEM custom models are quoted on an MOQ that depends on the operating conditions, usually between 500 and 2,000 pieces.

How do I get a formal quotation? What does it include?

Send model numbers and quantities using the inquiry form linked at the foot of this page. A formal quotation follows within 24 hours, covering unit price with tiered breaks, lead time, payment terms, packaging specification, applicable HS codes, and the traceability documents supplied. It arrives as a PDF you can drop straight into a procurement approval file.

What payment methods are accepted? Do you accept T/T and L/C?

We accept several international trade payment methods. T/T is the standard route, with 30% advance payment and 70% against a copy of the B/L on normal orders. Long-term large-volume clients can negotiate L/C terms. PayPal and Western Union are available for small sample orders. Final terms sit in the signed contract.

Do you support long-term supply framework agreements? What are the benefits?

Yes. Annual or multi-year framework agreements bring a reserved inventory allocation that keeps batch consistency, plus price protection against raw material swings, priority scheduling for deliveries, and an account manager assigned to your orders. These agreements normally carry an annual purchase volume commitment, and the threshold is negotiable.

Which branded product lines do you cover? Can you supply all models?

Coverage runs across deep groove, angular contact, cylindrical roller, tapered roller, spherical roller, and thrust types, plus precision crossed roller bearings for robotics, over 12,000 SKUs in compatible replacement form for NTN-series interchange. Non-standard models can be sourced through factory channels, with lead time varying by model at typically 4-12 weeks.

Logistics, Delivery & Customs Clearance

What is the typical lead time? What is the difference between in-stock and non-stock items?

For in-stock models, with live stock counts in our WMS, picking and dispatch take 1-3 business days from payment. Express carriers such as DHL or FedEx need about 5-10 business days depending on destination. Sea LCL runs roughly 15-35 days, and FCL depends on the route. Non-stock models come from the factory, usually within 4-12 weeks, and we confirm the date clearly before the order is placed.

What shipping methods are available? Do you offer door-to-door service?

We ship door to door into more than 50 countries. Choices include express carriers (DHL, FedEx, UPS), air freight, sea LCL, sea FCL, and rail on the China-Europe Railway Express. Quotations can be issued on EXW, FOB, CIF, or DAP terms, with documents prepared to your requirements.

How do you handle customs clearance? What export documents are provided?

Clearance paperwork includes the Commercial Invoice, the Packing List, the Bill of Lading or Air Waybill, Certificate of Origin, factory conformance documents for the producing line, and the HS code declaration. Where a destination imposes anti-dumping duty or special import control, such as India or the USA, our customs specialists confirm the compliance route in advance so clearance does not stall.

What happens if goods are damaged or lost in transit?

All goods leave in standard industrial packaging that is moisture-proof, shock-resistant, and anti-static, with optional all-risk transit insurance at 110% of cargo value. If damage happens in transit, photograph it and notify us inside 48 hours of receiving the goods. We will help with the carrier claim and put a replacement shipment at the front of the queue.

OEM Customization & Technical Support

What is the OEM customization process? How long does it take from requirements to delivery?

OEM customization moves through four stages:

What OEM customization options are available, such as dimensions, materials, and grease?

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

What model selection and installation support can your technical team provide?

Our technical team brings 10+ years of industry experience and supports you with selection calculations built on the application, covering L10 life estimation and fit tolerance advice; installation guidance spanning press-fit and thermal mounting; lubrication scheme design; failure analysis reports when a batch runs into quality trouble; and on-site support for joint development with OEM customers.

Can OEM custom products be branded with the customer's own label (white label)?

Branding stays flexible. You can keep the reference brand identity where an OEM scenario needs brand endorsement, use your own brand as white label subject to a minimum order quantity, or go dual-brand. Every white-label unit keeps a traceable internal batch number so quality control stays intact. Talk to your sales manager about the specific arrangement.

Warranty & After-Sales Claims

What is the product warranty period? What quality issues are covered?

Standard warranty runs 12 months from the delivery date, or as the contract states. It covers early failures arising from defective material, dimensional non-conformance, and inspection oversights under normal operating conditions in line with installation standards. Excluded are failures caused by bad installation, overloading, dirt ingress, or starved lubrication.

How do I file a quality claim? What is the processing timeline?

Submit a claim through your account manager or the inquiry form on this page, giving the order or batch number, what went wrong, photographs of the damage, and returned samples where we ask for them. We acknowledge receipt within 48 hours and give a preliminary conclusion within 7 business days. Where quality liability is confirmed, we arrange a replacement shipment or refund first, together with an 8D analysis report.

Do you support third-party inspection? How are quality disputes resolved?

On disputed quality issues we will commission an internationally accredited third-party body such as SGS, TÜV, or BV for independent testing, with costs shared according to where liability falls. We commit to full cooperation, handing over the original inspection data for the batch, heat number records, and MES traceability data so the process stays transparent and fair.

Do you provide failure analysis reports? How do they help improve future procurement?

Yes. For batch quality problems or reported abnormal early failures, our engineers issue a professional Failure Analysis Report covering how the part failed (spalling from fatigue, wear, corrosion, cage fracture, and similar), Root Cause Analysis, and improvement recommendations on model selection, installation process, or lubrication adjustment. That report forms the technical basis for upgrading procurement specifications on later orders.

Every shipment travels in moisture-proof, shock-resistant industrial packaging with factory labels and batch barcodes. Before dispatch, each lot goes through a re-inspection of 17 parameters.

DIRECT CONTACT

Didn't Find Your Answer? A Dedicated Engineer Will Reply One-to-One

Every client brings its own procurement scenario, duty requirements, and compliance obligations. If this page has not answered your specific question, our senior application engineers are reachable via the channels below and normally reply within 24 hours.

Ready to Order in Bulk? A Formal Quote Within 24 Hours

Once we have your model numbers and quantities, an application engineer prepares a formal quotation covering factory conformance documents, tiered pricing, lead time, and the full export document package.

COOPERATION PROCESS

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