Enter the number on the bearing you buy today (try 22314, NU310, SET6, 30207). The finder searches the full loaded catalogue — 2,281 designations across the spherical, cylindrical, tapered, wheel-hub, needle, thrust and angular contact ranges, including cone/cup and cross-reference numbers — and takes you straight to the matching row.
Every family page carries real model tables with dimensions and cross-references from the NKEN model library — search the model you need, check the size, and send the inquiry from the same page.
Flagship lineCeramic-coated bearings that block shaft currents in VFD motors, traction motors and wind generators. Coating 50–200 μm, withstands 1000 V.
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Full ceramic ZrO2 and Si3N4 bearings plus hybrid ceramic (Si3N4 balls, steel rings), precision up to P4 — for spindles, medical, semiconductor and high-speed motors.
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222 / 223 / 230 / 231 / 232 / 240 / 241 series for heavy radial loads and misalignment — mining, steel, paper and cement plants. CA/W33 executions from stock.
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NU / NJ / NUP / NN single- and double-row bearings for motors, gearboxes and machine tools — steel, brass and polyamide cages, made at our Shandong factory.
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Metric 302/303/322/323 and inch SET series, single-, double- and four-row — with cone & cup numbers matching the axle sets your workshop already uses.
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HK / BK drawn-cup, RNA / NA machined-ring and K cage assemblies — the line NKEN started with in 2003, produced at our Jiangsu factory.
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72 / 73 series single-row, double-row and matched pairs for spindles, pumps and compressors — precision grades to P4 for machine-tool work.
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Thrust ball 511 / 512 / 513 and thrust roller bearings for rotary tables, crane hooks, presses and vertical shafts — including oilfield rotary-table duty.
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Four-point contact ball, crossed-roller and three-row roller slewing rings, with or without gear — for excavators, cranes, wind and port machinery.
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Sealed hub units for MAN, Mercedes-Benz, Volvo and Renault trucks, plus the full DAC wheel-bearing range — send us the bearing number you are using now and we will match the NKEN equivalent.
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Rotary-table thrust, hook and mud-pump bearings for drilling rigs — plus large-bearing renovation from 2 in ID to 100 in OD, matched to the original rig-equipment references.
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GE / GEG radial spherical plain bearings and POS / PHS rod ends — steel/steel and maintenance-free PTFE executions for hydraulics and linkages.
View models & specs →Strict quality control and advanced manufacturing — noise, clearance, roundness and vibration tested in-house before packing.
GCr15 bearing steel, high load capacity, low noise and long service life — precision P0–P2.
Complete models and sizes to meet different needs — 12 families, 2,000+ models in stock, bore 3–1000 mm.
Fast delivery and stable supply to customers all over the world — 73+ export countries, stock orders dispatched in 5 days.
An experienced team provides the best solutions for you — OEM branding, free samples and 24/7 sales support.
When VFD shaft currents flute motor bearings, the answer is a ceramic insulation layer, not a new motor. NKEN insulated bearings carry a 50–200 μm ceramic coating rated to 1000 V, dimensionally identical to the bearing they replace.
We supply drop-in insulated equivalents for variable-frequency motors, wind generators and rail traction, in the industry-standard VL / J20 designation classes — across deep groove ball, cylindrical, tapered, spherical and angular contact types.
| Coating | Ceramic, plasma-sprayed, 50–200 μm |
|---|---|
| Withstands | Up to 1000 V |
| Designation classes | Industry-standard insulated classes (VL / J20) |
Start from your machine, not our catalogue. Each application shows the bearing families that serve it — with the model tables one click away.
Shaft currents from variable-frequency drives are the number one killer of motor bearings. NKEN insulated bearings (VL0241 / J20 equivalents) protect inverter-duty motors against that damage, backed by cylindrical roller and angular contact bearings for standard motor positions.
Generator bearings insulated against converter currents, yaw and pitch slewing rings, and main-shaft spherical roller bearings — specified for long service intervals up the tower.
Traction-motor insulated bearings (VA3091-type duty), cylindrical roller bearings for gearboxes and axlebox units — built for shock, contamination and long maintenance cycles.
Tapered sets for tractor axles and gearboxes, spherical roller bearings for implements and harvesters, and needle bearings for transmissions — built for dust, mud and seasonal peak loads.
Wheel hub units for MAN, Mercedes-Benz, Volvo and Renault, SET tapered kits for trailer axles and DAC wheel bearings — ordered by the unit number on the bearing you already stock.
Spherical roller bearings for crushers, mills and screens, slewing rings for excavators and cranes, and thrust bearings for heavy drives — CA/W33 executions stocked for plant maintenance.
NKEN is a manufacturing-plus-trading group. Two factories, an in-house testing lab and a stocked warehouse stand behind every quotation we send.
Jiangsu makes needle roller bearings — the 2003 founding line. Shandong makes cylindrical and spherical roller bearings and ceramic bearings.
Dedicated measuring instruments for noise, clearance, roundness, rotary precision, vibration and friction torque — plus third-party QC on request.
Export packing, OEM colour boxes and palletised sea/air loading from the factory — your brand on the box, our care inside it.
Quality management certified in 2008 and maintained since — with the dated company record on our About page for anyone who wants to verify who we are.
Laser marking on the rings and your own colour box and labels. Goods arrive ready for your shelf, not ours.
Bearings to drawing — including small quantities. The line most factories refuse is a standard NKEN service.
Twelve families and 2,000+ stock models in one shipment — consolidate your bearing range with one supplier and one QC standard.
Test quality and fit before you commit: free samples of most catalogue models for distributors, OEMs and maintenance buyers.
The number you buy today — or a drawing, for non-standard parts. The finder above or any product page form works.
We cross-reference, confirm execution (seals, clearance, coating, cage) and reply with price, stock and delivery time.
Free samples for testing on new lines; OEM artwork and box proofs for branding orders.
Export packing, your branding, and order follow-up from James Ke personally — 24/7 support.
Technical guides written for buyers and engineers: failure causes, cross-references and specification help.
Why VFD motors flute their bearings, how ceramic insulation coatings stop it, and how to specify the right insulated bearing by cross-reference.
Bearings are one of the most standardised products in industry. Here is how cross-referencing works, what a designation actually encodes, and the five things to send for a fast, exact quotation.
How to select a spherical roller bearing step by step: choose the series by load and speed, CA or CC cage, W33 lubrication, C3/C4 clearance, and cylindrical or tapered bore — with a worked example.
Full ceramic (ZrO2 / Si3N4) or hybrid ceramic (Si3N4 balls, steel rings)? A decision guide by failure mode: corrosion, magnetism, insulation, speed and load — and the ZrO2 vs Si3N4 choice inside full ceramic.
How to identify and cross-reference a truck wheel hub unit, SET tapered kit or DAC wheel bearing: read the unit number, confirm flange and ABS execution, and the information to send for an exact match.
How the NU, NJ, NUP, N and NF single-row types differ from NN double-row: floating vs locating positions, steel, brass or polyamide cages, CN/C3/C4 clearance — and how to read the designation before you order.
We cross-reference it against 2,000+ stocked NKEN models and quote price, stock and delivery — free samples on request.
