16 models in the FLR series, 1.984–9.525 mm bore. Every row links to the full specification page and to the cross-reference page of that model.
| Model | Brand | Bore d (mm) | OD D (mm) | Width B (mm) | |
|---|---|---|---|---|---|
| FLR1-4 | NTN | 1.984 | 6.35 | 2.38 | — |
| FLR133 | NTN | 2.38 | 4.762 | 1.588 | — |
| FLR1-5 | NTN | 2.38 | 7.938 | 2.779 | — |
| FLR144 | NTN | 3.175 | 6.35 | 2.38 | — |
| FLR2-5 | NTN | 3.175 | 7.938 | 2.779 | — |
| FLR2 | NTN | 3.175 | 9.525 | 3.967 | — |
| FLR2-6 | NTN | 3.175 | 9.525 | 2.779 | — |
| FLR155 | NTN | 3.967 | 7.938 | 2.779 | — |
| FLR156 | NTN | 4.762 | 7.938 | 2.779 | — |
| FLR166 | NTN | 4.762 | 9.525 | 3.175 | — |
| FLR188 | NTN | 6.35 | 12.7 | 3.175 | — |
| FLR4 | NTN | 6.35 | 15.875 | 4.978 | — |
| FLR4Z | NTN | 6.35 | 15.875 | 4.978 | — |
| FLR4ZZ | NTN | 6.35 | 15.875 | 4.978 | — |
| FLR6Z | NTN | 9.525 | 22.225 | 7.142 | — |
| FLR6ZZ | NTN | 9.525 | 22.225 | 7.142 | — |
FLR series bearings follow the ISO dimension plan for this family, so a given number is dimensionally interchangeable between brands - see the cross-reference to confirm. Choose the suffix for your duty: shields for dry, clean positions, contact seals for wet or dusty ones, and a larger clearance class where the fit or temperature demands it.
Other Ball Bearing Units series: E · NAU · LSE · UC · SNV · MSE · SD · SNT