Guide
NSK Bearing Cross Reference
Interchange NSK bearing part numbers to SKF, FAG, Timken, NTN or KOYO equivalents. NSK suffixes like DDU (contact seals), VV (non-contact seals) and HR (premium tapered series) map cleanly to the competitor's equivalent — this chart shows the direct match. Send the NSK number and we'll pull it from Houston stock.
Look up a NSK part number
Enter a NSK part number to see the equivalents we stock. Can't find your part? Send us the number and we'll cross-reference it.
How the NSK numbering system works
NSK follows ISO 15 base numbers with its own Japanese suffix set. DDU = two contact rubber seals (SKF 2RSH, FAG 2RSR, NTN LLU). VV = two non-contact rubber seals. ZZ = two steel shields. C3 matches ISO C3 clearance for hot-running or interference-fit applications.
NSK's HR prefix on tapered rollers indicates the premium case-carburized series with tighter geometric tolerances — dimensionally identical to Timken and SKF J2/Q. EA on spherical rollers is the reinforced-cage E-series; E4 denotes the modern pressed-steel cage. W on cylindrical rollers is a machined-brass cage.
NSK interchange chart
| NSK | SKF | FAG | TIMKEN | NTN | KOYO | Type |
|---|---|---|---|---|---|---|
| 6203DDU | 6203-2RSH | 6203-2RSR | 203PP | 6203LLU | 6203-2RS | Deep-groove ball, sealed |
| 6204DDU | 6204-2RSH | 6204-2RSR | 204PP | 6204LLU | 6204-2RS | Deep-groove ball, sealed |
| 6205DDU | 6205-2RSH | 6205-2RSR | 205PP | 6205LLU | 6205-2RS | Deep-groove ball, sealed |
| 6206DDU | 6206-2RSH | 6206-2RSR | 206PP | 6206LLU | 6206-2RS | Deep-groove ball, sealed |
| 6305DDU | 6305-2RSH | 6305-2RSR | 305PP | 6305LLU | 6305-2RS | Deep-groove ball, sealed |
| 6308ZZ | 6308-2Z | 6308-2ZR | 308KDD | 6308ZZ | 6308-2Z | Deep-groove ball, shielded |
| 22210EAE4 | 22210 E | 22210-E1 | 22210EJ | 22210EAW33 | 22210R | Spherical roller |
| HR32208J | 32208 J2/Q | 32208-A | 32208 | 4T-32208 | 32208JR | Tapered roller |
| HR30210J | 30210 J2/Q | 30210-A | 30210 | 4T-30210 | 30210JR | Tapered roller |
| NU309EW | NU 309 ECP | NU309-E-TVP2 | NU309E | NU309E | NU309R | Cylindrical roller |
Don't see your NSK part? Email sales@tsbindustrialsupply.com — we'll pull the equivalent from our master interchange.