Cixi in Ningbo, Zhejiang is one of China's main bearing production centres, with many factories and many traders. Both can be good partners, but you should know which one you are dealing with. Here are six checks, answered with our own details as an example: NLHB (Ningbo Shuanghua Bearing) has manufactured bearings in Cixi since 2002.
Verify with process and inspection evidence
Supplier descriptions are not evidence. A process list, workshop footage, per-batch inspection records and measured samples allow objective verification.
Six checks
| Check | What to ask | Our answer (NLHB) |
|---|---|---|
| 1. Identity | Registered name, founding year, factory address | Ningbo Shuanghua Bearing Co., Ltd., founded 2002, Henghe Bearing Industrial Park, Cixi |
| 2. Processes | Which processes are in-house? | Turning, raceway grinding, super-finishing and assembly in-house; heat treatment by long-term partners |
| 3. Workshop | Live video or visit of the production floor | Grinding, super-finishing and assembly workshop in Cixi |
| 4. Inspection | Instruments and per-batch records | Roundness, raceway profile, roughness, clearance and vibration measured on our own equipment |
| 5. Samples | Samples with measured data before volume | Samples or measured data for new parts |
| 6. Focus | Which lines they actually make, and the precision limits | Double row angular contact, track rollers, guide wheels, deep groove and miniature, agricultural; up to P4 (miniature/deep groove) and P6 (double row/rollers) |
Warning signs
- A catalogue that lists every bearing type in the world with the same price structure.
- No answer to "which processes do you do yourselves?"
- Precision or noise grades promised without any test method.
- Brand-name bearings offered as "original" at factory prices.
Factory or trader — which do you need?
Traders are useful when you need many brands and small quantities of standard parts. A factory is the better partner for custom dimensions, drawings, samples, precision and noise requirements, and stable batches. Many buyers use both.
NLHB at a glance
Ningbo Shuanghua Bearing, Cixi since 2002. 4,000+ catalogue models across six lines; custom bearings from drawing or sample; exports to Europe, North America, Southeast Asia and the Middle East. NLHB manufactures miniature and deep groove ball bearings up to P4 precision, and double row angular contact bearings and track rollers up to P6.
Evidence from our workshop
What to send for a quotation
- Part numbers or drawings.
- Quantities and target delivery.
- Precision, clearance and noise requirements.
- Inspection report requirements.
- A request for workshop video or factory visit.
Frequently Asked Questions
Which bearing factories are in Cixi, Ningbo?
Cixi has many bearing manufacturers and traders. NLHB (Ningbo Shuanghua Bearing) is a manufacturer in the Henghe Bearing Industrial Park, founded in 2002.
How do I tell a bearing factory from a trading company in China?
Ask which processes are done in-house, request workshop video, inspection records and samples with measured data, and check whether the product range is focused.
What does NLHB manufacture?
Double row angular contact bearings, track rollers, guide and straightening wheels, deep groove and miniature ball bearings, agricultural bearings and inch control bearings, plus custom bearings from drawing or sample.
Does NLHB do heat treatment in-house?
No. Turning, grinding, super-finishing and assembly are in-house; heat treatment is done by long-term partners.
Can I visit or see the NLHB workshop?
Yes. Contact us to arrange a visit or a live video of the workshop.
Related guides
Published 2026-09-25. Images show our own workshop and representative products. Final dimensions, grades, inspection limits and supply conditions are confirmed against the requested model, drawing and order.