Ningbo Shuanghua Bearing (NLHB) turns, grinds, super-finishes, assembles and inspects bearings in our own plant in Cixi. We produce to catalog number, to your drawing or from your sample.
Main series: 3200 / 5200 double-row angular contact · SG / LFR / LV / VW track rollers · Guide & straightening wheels · Deep groove & MR miniature · 203KRR2 agricultural
Search 6200, 5203, SG15 and 4,000+ catalog models. Send the number and we confirm specs, stock 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 →From miniature bearings to heavy-duty agricultural units — every order is checked against your drawing or sample before production.
Standard and miniature ball bearings for motors, fans, pumps, appliances and power tools. Miniature sizes in chrome or stainless steel, with steel or ceramic balls and precision up to P4.
View deep groove bearings →
Our core line. Carries radial and axial loads in both directions in one compact unit — open, ZZ and 2RS. For gearboxes, pumps, compressors and clutches.
View angular contact bearings →
Thick outer rings with U-groove, V-groove or flat profiles run directly on rails and shafts. Custom profiles for linear guides, automation, conveyors and sliding doors.
View track roller bearings →
Inch-size airframe-type control bearings — single-row, double-row, precision and roller types, dimensionally cross-referenced to common RBC designations. For industrial and aftermarket use.
View aircraft bearings →
Multi-lip sealed bearings for disc harrows, planters, combines and tillage tools — built for mud, dust and shock loads.
View agricultural bearings →
Guide, aligner and straightening wheels for tire-building and wire lines, where profile accuracy and wear life decide output. Made to drawing or measured from your worn part.
View guide wheels →Special bore, O.D. and width dimensions, profiled outer rings, custom seals, clearance, contact angle and low-noise requirements — NLHB reviews manufacturability first, then locks sample and production standards. No drawing? Send us a sample to reverse-engineer.
DWG / DXF / PDF / photos accepted. No drawing? Send d, D, B, speed, load, application and quantity.
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.
Turning, raceway grinding, super-finishing and assembly are done in our own plant, with heat treatment by long-term partners. That is how we control the dimensions, noise and life of the bearings we ship.
See our quality 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 4,000+ bearings 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 our own equipment. Inspection data available with your order on request.
Anti-corrosion oil, vacuum wrap, pallet packing for sea and air freight. We can send packing photos for your specific order before shipment.
Turning, raceway grinding, super-finishing and assembly done in our own workshop in Cixi, Ningbo — the processes that decide bearing accuracy and 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.
Miniature shielded bearings for brush rolls, side brushes and drive wheels.
Low-noise miniature bearings for brushless motors and small DC motors.
Stainless and hybrid ceramic miniature bearings, including SR-series dental handpiece bearings in P4 precision.
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 →Certifications and standards we work to. Send us your audit checklist — we will complete it.
Certificate images available on request. Specific certifications confirmed per customer audit.
"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.
We confirm the specification, material and lead time, then send a quote. Samples are available for new parts before volume production.