Guide
NTN Bearing Cross Reference
Interchange NTN bearing part numbers to SKF, FAG, Timken, NSK or KOYO equivalents. NTN suffixes like LLU (contact seals), ZZ (shields) and 4T (case-carburized tapered roller) map cleanly to competitor codes — this chart lists the exact match. Send us the NTN number and we'll pull the equivalent from Houston inventory.
Look up a NTN part number
Enter a NTN 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 NTN numbering system works
NTN follows ISO 15 base numbers and layers on Japanese-convention suffixes. LLU means two contact rubber seals (SKF 2RSH, FAG 2RSR, NSK DDU). LLB is a low-friction non-contact seal. ZZ is two steel shields (SKF 2Z, FAG 2ZR). C3 matches ISO C3 clearance.
On tapered rollers, 4T- indicates NTN's case-carburized premium tapered series — dimensionally identical to the standard Timken part number that follows. W33 on spherical rollers means the lubrication groove and three holes in the outer ring. Mounted units use UCP / UCF / UCFL housings, matching the industry standard.
NTN interchange chart
| NTN | SKF | FAG | TIMKEN | NSK | KOYO | Type |
|---|---|---|---|---|---|---|
| 6203LLU | 6203-2RSH | 6203-2RSR | 203PP | 6203DDU | 6203-2RS | Deep-groove ball, sealed |
| 6204LLU | 6204-2RSH | 6204-2RSR | 204PP | 6204DDU | 6204-2RS | Deep-groove ball, sealed |
| 6205LLU | 6205-2RSH | 6205-2RSR | 205PP | 6205DDU | 6205-2RS | Deep-groove ball, sealed |
| 6206LLU | 6206-2RSH | 6206-2RSR | 206PP | 6206DDU | 6206-2RS | Deep-groove ball, sealed |
| 6305LLU | 6305-2RSH | 6305-2RSR | 305PP | 6305DDU | 6305-2RS | Deep-groove ball, sealed |
| 6308ZZ | 6308-2Z | 6308-2ZR | 308KDD | 6308ZZ | 6308-2Z | Deep-groove ball, shielded |
| 22210EAW33 | 22210 E | 22210-E1 | 22210EJ | 22210EAE4 | 22210R | Spherical roller |
| 4T-32208 | 32208 J2/Q | 32208-A | 32208 | HR32208J | 32208JR | Tapered roller |
| 4T-30210 | 30210 J2/Q | 30210-A | 30210 | HR30210J | 30210JR | Tapered roller |
| NU309E | NU 309 ECP | NU309-E-TVP2 | NU309E | NU309EW | NU309R | Cylindrical roller |
Don't see your NTN part? Email sales@tsbindustrialsupply.com — we'll pull the equivalent from our master interchange.