NLHB helps industrial buyers source standard, replacement and custom bearings from China — with clear specifications, responsive quotation and practical quality support.
Search 6200, 5203, SG15 and 50+ catalog series. Send the number and we confirm specifications, availability and MOQ.
Search products →Match by dimensions, reference number or application. We declare compatible references without implying authorization.
Replacement lookup →Send a drawing, sample or use case. We confirm feasibility, specs and a realistic lead time before quote.
Start a custom quote →Standard, replacement and custom bearings — built and inspected for industrial buyers, not retail shelves.
For electric motors, fans, pumps, household appliances and general machinery.
View deep groove bearings →
Our differentiated strong line. Combined axial + radial loads for gearboxes, pumps and compressors.
View angular contact bearings →
Linear motion and guidance systems. Automation, conveyor lines, sliding doors and precision guides.
View track roller bearings →
For landing gear, controls and airframe assemblies. Single-row, double-row and precision sub-lines.
View aircraft bearings →
Disc harrows, planters, combines and tillage equipment. Heavy seals for mud, dust and field conditions.
View agricultural bearings →
Tire-building and aligner applications. Custom profiles and compounds to match your machine spec.
View guide wheels →Over 1,300 verified compatible references. Search any brand part number, get the NLHB equivalent with dimensions confirmed.
SKF, NSK, NTN, FAG, INA and RBC are trademarks of their respective owners. NLHB declares compatible references for sizing only — not authorized, not affiliated.
Ningbo Shuanghua Bearing Co., Ltd. (NLHB) operates grinding, super-finishing and assembly lines at our Cixi facility. The sign on the wall is real. The workshop in the photo is where your bearings get finished. We don't rent a showroom and call it a factory.
No blind drop-shipping. Every inquiry is checked against real supply, real specs and a real lead time — so the quote you get is the quote you can build a purchase on.
Read our sourcing process →Dimensions, tolerance, seal and clearance checked against the drawing before we quote.
Physical samples or measured data for critical orders, so you verify fit before bulk production.
Roundness, roughness, noise and clearance measured on real equipment — data available on request.
Carton, pallet and export-grade packing. We handle multi-line inquiries and mixed shipments.
We confirm the spec, the compatible reference and a realistic lead time. No order confirmed until you approve.
Six free calculators and search tools. No signup, no download — use them right in your browser.
Search 4,315 catalog models by bore, outer diameter, and width.
Find NLHB equivalents for SKF, NSK, NTN, FAG, INA, and RBC.
L10 and L10h life per ISO 281. For ball and roller bearings.
Calculate shaft and housing interference per ISO 286.
Calculate P = XFr + YFa with auto X/Y factor selection.
Z1–Z4 vibration level reference by bore diameter.
Raceway geometry, roundness and surface finish measured per batch on real equipment. Data available with your order on request — not staged photos.
Anti-corrosion oil, vacuum wrap, pallet packing for sea and air freight. We can send packing photos for your specific order before shipment.
Raceway grinding, super-finishing and assembly done in our own workshop in Cixi, Ningbo. We control the processes that decide bearing life.
Track rollers and guide wheels for linear rails, actuators and pick-and-place units.
Sealed deep-groove and insert bearings for belt, roller and chain conveyors.
Heavy-sealed units for planters, combines and tillage — mud, dust and shock loads.
Low-noise deep-groove bearings for motors, pumps, blowers and household appliances.
High-speed precision bearings for spindles, looms and winding equipment.
Cross-reference by part number or dimension — for repair shops and distributors.
A practical comparison of shielded vs sealed miniature bearings — speed, dust protection and relubrication.
Read guide →The 6200 series is the most-cross-referenced standard bearing. Here is what to check before you order.
Read guide →A checklist of drawings, samples, quantity and application info that turns a quote around faster.
Read guide →Tell us the standard, precision class and documents your order requires. We confirm what applies before quotation.
Certificate, compliance and inspection-document availability is confirmed for the specific model, supply route and order.
"NLHB confirmed every dimension before quoting. The bearings matched the drawing exactly. No surprises on delivery — the lead time they quoted was the lead time we got."
"We cross-referenced 12 SKF part numbers. NLHB declared each as compatible, not authorized — exactly the honest positioning we needed for our aftermarket channel."
"Sent a sample of a discontinued bearing. They reverse-engineered it, sent measured data, then quoted. The custom batch is still running in our equipment 18 months later."
Testimonials shown with customer permission. Company names withheld per NDA — available on request to qualified buyers.
No instant price, no fake stock. Send a part number, drawing or use case — we verify supply and quality, then quote against confirmed specifications.