62 products
The R Series is the global standard for inch-sized miniature deep groove ball bearings. Made from high-quality chrome steel, these bearings are engineered for versatility and high-speed performance. From hobbyist RC models to professional dental equipment, the R series provides a cost-effective and highly reliable solution for any application requiring imperial-sized micro bearings.
| Part Number | Bore diameter | Outside diameter | Width | For load direction | Seal type | Ring material | Ball material | Radial dynamic load rating | Radial static load rating | Limiting speed |
|---|---|---|---|---|---|---|---|---|---|---|
| R09 | 0.04" | 0.125" | 0.0469" | Radial | Open | Chrome Steel | Chrome Steel | 20 lbf | 5 lbf | 130 X 1000 rpm |
| R0 | 0.046875" | 0.15625" | 0.0625" | Radial | Open | Chrome Steel | Chrome Steel | 21 lbf | 6 lbf | 110 X 1000 rpm |
| R0zz | 0.046875" | 0.15625" | 0.0937" | Radial | Shielded | Chrome Steel | Chrome Steel | 21 lbf | 6 lbf | 110 X 1000 rpm |
| R1 | 0.05556" | 0.1875" | 0.0781" | Radial | Open | Chrome Steel | Chrome Steel | 44 lbf | 12 lbf | 90 X 1000 rpm |
| R1zz | 0.05556" | 0.1875" | 0.1094" | Radial | Shielded | Chrome Steel | Chrome Steel | 44 lbf | 12 lbf | 90 X 1000 rpm |
| R1-4 | 0.07813" | 0.25" | 0.0937" | Radial | Open | Chrome Steel | Chrome Steel | 54 lbf | 17 lbf | 67 X 1000 rpm |
| R1-4 2rs | 0.07813" | 0.25" | 0.1406" | Radial | Sealed | Chrome Steel | Chrome Steel | 54 lbf | 17 lbf | 67 X 1000 rpm |
| R1-4zz | 0.07813" | 0.25" | 0.1406" | Radial | Shielded | Chrome Steel | Chrome Steel | 54 lbf | 17 lbf | 67 X 1000 rpm |
| R133 | 0.09375" | 0.1875" | 0.0625" | Radial | Open | Chrome Steel | Chrome Steel | 36 lbf | 11 lbf | 80 X 1000 rpm |
| R133 2rs | 0.09375" | 0.1875" | 0.0937" | Radial | Sealed | Chrome Steel | Chrome Steel | 28 lbf | 10 lbf | 80 X 1000 rpm |
| R133zz | 0.09375" | 0.1875" | 0.0937" | Radial | Shielded | Chrome Steel | Chrome Steel | 28 lbf | 10 lbf | 80 X 1000 rpm |
| R1-5 | 0.09375" | 0.3125" | 0.1094" | Radial | Open | Chrome Steel | Chrome Steel | 106 lbf | 32 lbf | 60 X 1000 rpm |
| R1-5 2rs | 0.09375" | 0.3125" | 0.1406" | Radial | Sealed | Chrome Steel | Chrome Steel | 106 lbf | 32 lbf | 60 X 1000 rpm |
| R1-5zz | 0.09375" | 0.3125" | 0.1406" | Radial | Shielded | Chrome Steel | Chrome Steel | 106 lbf | 32 lbf | 60 X 1000 rpm |
| R144 | 0.125" | 0.25" | 0.0937" | Radial | Open | Chrome Steel | Chrome Steel | 54 lbf | 17 lbf | 67 X 1000 rpm |
| R144 2rs | 0.125" | 0.25" | 0.1094" | Radial | Sealed | Chrome Steel | Chrome Steel | 54 lbf | 17 lbf | 67 X 1000 rpm |
| R144zz | 0.125" | 0.25" | 0.1094" | Radial | Shielded | Chrome Steel | Chrome Steel | 54 lbf | 17 lbf | 67 X 1000 rpm |
| R2-5 | 0.125" | 0.3125" | 0.1094" | Radial | Open | Chrome Steel | Chrome Steel | 107 lbf | 32 lbf | 60 X 1000 rpm |
| R2-5 2rs | 0.125" | 0.3125" | 0.1406" | Radial | Sealed | Chrome Steel | Chrome Steel | 107 lbf | 32 lbf | 60 X 1000 rpm |
| R2-5zz | 0.125" | 0.3125" | 0.1406" | Radial | Shielded | Chrome Steel | Chrome Steel | 107 lbf | 32 lbf | 60 X 1000 rpm |
| R2-6 | 0.125" | 0.375" | 0.1094" | Radial | Open | Chrome Steel | Chrome Steel | 122 lbf | 41 lbf | 53 X 1000 rpm |
| R2-6 2rs | 0.125" | 0.375" | 0.1406" | Radial | Sealed | Chrome Steel | Chrome Steel | 122 lbf | 41 lbf | 53 X 1000 rpm |
| R2-6zz | 0.125" | 0.375" | 0.1406" | Radial | Shielded | Chrome Steel | Chrome Steel | 122 lbf | 41 lbf | 53 X 1000 rpm |
| R2 | 0.125" | 0.375" | 0.1562" | Radial | Open | Chrome Steel | Chrome Steel | 121 lbf | 39 lbf | 56 X 1000 rpm |
| R2 2rs | 0.125" | 0.375" | 0.1562" | Radial | Sealed | Chrome Steel | Chrome Steel | 121 lbf | 39 lbf | 56 X 1000 rpm |
| R2zz | 0.125" | 0.375" | 0.1562" | Radial | Shielded | Chrome Steel | Chrome Steel | 121 lbf | 39 lbf | 56 X 1000 rpm |
| R2A | 0.125" | 0.5" | 0.1719" | Radial | Open | Chrome Steel | Chrome Steel | 122 lbf | 41 lbf | 53 X 1000 rpm |
| R2A 2rs | 0.125" | 0.5" | 0.1719" | Radial | Sealed | Chrome Steel | Chrome Steel | 122 lbf | 41 lbf | 53 X 1000 rpm |
| R2Azz | 0.125" | 0.5" | 0.1719" | Radial | Shielded | Chrome Steel | Chrome Steel | 122 lbf | 41 lbf | 53 X 1000 rpm |
| R155 | 0.15625" | 0.3125" | 0.1094" | Radial | Open | Chrome Steel | Chrome Steel | 69 lbf | 27 lbf | 53 X 1000 rpm |
| R155 2rs | 0.15625" | 0.3125" | 0.125" | Radial | Sealed | Chrome Steel | Chrome Steel | 69 lbf | 27 lbf | 53 X 1000 rpm |
| R155zz | 0.15625" | 0.3125" | 0.125" | Radial | Shielded | Chrome Steel | Chrome Steel | 69 lbf | 27 lbf | 53 X 1000 rpm |
| R156 | 0.1875" | 0.3125" | 0.1094" | Radial | Open | Chrome Steel | Chrome Steel | 69 lbf | 27 lbf | 53 X 1000 rpm |
| R156 2rs | 0.1875" | 0.3125" | 0.125" | Radial | Sealed | Chrome Steel | Chrome Steel | 69 lbf | 27 lbf | 53 X 1000 rpm |
| R156zz | 0.1875" | 0.3125" | 0.125" | Radial | Shielded | Chrome Steel | Chrome Steel | 69 lbf | 27 lbf | 53 X 1000 rpm |
| R166 | 0.1875" | 0.375" | 0.125" | Radial | Open | Chrome Steel | Chrome Steel | 136 lbf | 49 lbf | 50 X 1000 rpm |
| R166 2rs | 0.1875" | 0.375" | 0.125" | Radial | Sealed | Chrome Steel | Chrome Steel | 136 lbf | 49 lbf | 50 X 1000 rpm |
| R166zz | 0.1875" | 0.375" | 0.125" | Radial | Shielded | Chrome Steel | Chrome Steel | 136 lbf | 49 lbf | 50 X 1000 rpm |
| R3 | 0.1875" | 0.5" | 0.1562" | Radial | Open | Chrome Steel | Chrome Steel | 249 lbf | 88 lbf | 43 X 1000 rpm |
| R3 2rs | 0.1875" | 0.5" | 0.196" | Radial | Sealed | Chrome Steel | Chrome Steel | 249 lbf | 88 lbf | 43 X 1000 rpm |
| R3zz | 0.1875" | 0.5" | 0.196" | Radial | Shielded | Chrome Steel | Chrome Steel | 249 lbf | 88 lbf | 43 X 1000 rpm |
| R3A | 0.1875" | 0.625" | 0.196" | Radial | Open | Chrome Steel | Chrome Steel | 283 lbf | 112 lbf | 38 X 1000 rpm |
| R3A 2rs | 0.1875" | 0.625" | 0.196" | Radial | Open | Chrome Steel | Chrome Steel | 333 lbf | 131 lbf | 38 X 1000 rpm |
| R3Azz | 0.1875" | 0.625" | 0.196" | Radial | Shielded | Chrome Steel | Chrome Steel | 283 lbf | 112 lbf | 38 X 1000 rpm |
| R168 | 0.25" | 0.375" | 0.125" | Radial | Open | Chrome Steel | Chrome Steel | 71 lbf | 31 lbf | 48 X 1000 rpm |
| R168 2rs | 0.25" | 0.375" | 0.125" | Radial | Sealed | Chrome Steel | Chrome Steel | 71 lbf | 31 lbf | 48 X 1000 rpm |
| R168zz | 0.25" | 0.375" | 0.125" | Radial | Shielded | Chrome Steel | Chrome Steel | 71 lbf | 31 lbf | 48 X 1000 rpm |
| R188 | 0.25" | 0.5" | 0.125" | Radial | Open | Chrome Steel | Chrome Steel | 207 lbf | 80 lbf | 40 X 1000 rpm |
| R188 2rs | 0.25" | 0.5" | 0.1875" | Radial | Sealed | Chrome Steel | Chrome Steel | 207 lbf | 80 lbf | 40 X 1000 rpm |
| R188zz | 0.25" | 0.5" | 0.1875" | Radial | Shielded | Chrome Steel | Chrome Steel | 207 lbf | 80 lbf | 40 X 1000 rpm |
| R4 | 0.25" | 0.625" | 0.196" | Radial | Open | Chrome Steel | Chrome Steel | 283 lbf | 112 lbf | 38 X 1000 rpm |
| R4 2rs | 0.25" | 0.625" | 0.196" | Radial | Sealed | Chrome Steel | Chrome Steel | 283 lbf | 112 lbf | 38 X 1000 rpm |
| R4zz | 0.25" | 0.625" | 0.196" | Radial | Shielded | Chrome Steel | Chrome Steel | 283 lbf | 112 lbf | 38 X 1000 rpm |
| R4A | 0.25" | 0.75" | 0.2188" | Radial | Open | Chrome Steel | Chrome Steel | 446 lbf | 161 lbf | 36 X 1000 rpm |
| R4A 2rs | 0.25" | 0.75" | 0.2812" | Radial | Sealed | Chrome Steel | Chrome Steel | 446 lbf | 161 lbf | 36 X 1000 rpm |
| R4Azz | 0.25" | 0.75" | 0.2812" | Radial | Shielded | Chrome Steel | Chrome Steel | 446 lbf | 161 lbf | 36 X 1000 rpm |
| R1810 | 0.3125" | 0.5" | 0.1562" | Radial | Open | Chrome Steel | Chrome Steel | 104 lbf | 50 lbf | 40 X 1000 rpm |
| R1810 2rs | 0.3125" | 0.5" | 0.1562" | Radial | Sealed | Chrome Steel | Chrome Steel | 104 lbf | 50 lbf | 40 X 1000 rpm |
| R1810zz | 0.3125" | 0.5" | 0.1562" | Radial | Shielded | Chrome Steel | Chrome Steel | 104 lbf | 50 lbf | 40 X 1000 rpm |
| R6 | 0.375" | 0.875" | 0.2188" | Radial | Open | Chrome Steel | Chrome Steel | 638 lbf | 256 lbf | 32 X 1000 rpm |
| R6 2rs | 0.375" | 0.875" | 0.2812" | Radial | Sealed | Chrome Steel | Chrome Steel | 638 lbf | 256 lbf | 32 X 1000 rpm |
| R6zz | 0.375" | 0.875" | 0.2812" | Radial | Shielded | Chrome Steel | Chrome Steel | 638 lbf | 256 lbf | 32 X 1000 rpm |
