92 models with a 31.75 mm bore in this type, with outer diameter and width. Outer diameters on this page run from 38.1 mm to 150 mm.
| Model | Brand | Type | OD D (mm) | Width B (mm) | |
|---|---|---|---|---|---|
| KGX20 | INA | Needle Roller Bearings | 6.35 | — | |
| KGXO20 | INA | Needle Roller Bearings | 6.35 | — | |
| KTX20 | INA | Needle Roller Bearings | 6.35 | — | |
| KTXO20 | INA | Needle Roller Bearings | 6.35 | — | |
| NAF214-44 | ANDGE | Needle Roller Bearings | — | ||
| NAF314-44 | ANDGE | Needle Roller Bearings | — | ||
| NAFC214-44 | ANDGE | Needle Roller Bearings | Cross-ref → | ||
| NAFL214-44 | ANDGE | Needle Roller Bearings | 265 | — | |
| NAFLU214-44 | ANDGE | Needle Roller Bearings | Cross-ref → | ||
| NAFS314-44 | ANDGE | Needle Roller Bearings | — | ||
| NAP314-44 | ANDGE | Needle Roller Bearings | 95 | — | |
| NAT214-44 | ANDGE | Needle Roller Bearings | 167 | — | |
| BA 2010Z | IKO | Needle Roller Bearings | 38.1 | 15.88 | — |
| BA 2012Z | IKO | Needle Roller Bearings | 38.1 | 19.05 | — |
| BA 2016Z | IKO | Needle Roller Bearings | 38.1 | 25.4 | — |
| BA 2020Z | IKO | Needle Roller Bearings | 38.1 | 31.75 | — |
| BA 208Z | IKO | Needle Roller Bearings | 38.1 | 12.7 | — |
| BAM 2010 | IKO | Needle Roller Bearings | 38.1 | 15.88 | — |
| BAM 2012 | IKO | Needle Roller Bearings | 38.1 | 19.05 | — |
| BAM 2016 | IKO | Needle Roller Bearings | 38.1 | 25.4 | — |
| BAM 2020 | IKO | Needle Roller Bearings | 38.1 | 31.75 | — |
| BAM 208 | IKO | Needle Roller Bearings | 38.1 | 12.7 | — |
| J-2012 | NSK | Needle Roller Bearings | 38.1 | 19.05 | — |
| J-2016 | NSK | Needle Roller Bearings | 38.1 | 25.4 | — |
| MJ-20121 | NSK | Needle Roller Bearings | 38.1 | 19.05 | — |
| MJ-20161 | NSK | Needle Roller Bearings | 38.1 | 25.4 | — |
| YB 2010 | IKO | Needle Roller Bearings | 38.1 | 15.88 | — |
| YB 2012 | IKO | Needle Roller Bearings | 38.1 | 19.05 | — |
| YB 2016 | IKO | Needle Roller Bearings | 38.1 | 25.4 | — |
| YB 2018 | IKO | Needle Roller Bearings | 38.1 | 28.58 | — |
| YB 2020 | IKO | Needle Roller Bearings | 38.1 | 31.75 | — |
| BHA 2012Z | IKO | Needle Roller Bearings | 41.275 | 19.05 | — |
| BHA 2016Z | IKO | Needle Roller Bearings | 41.275 | 25.4 | — |
| BHA 2020Z | IKO | Needle Roller Bearings | 41.275 | 31.75 | — |
| BHA 208Z | IKO | Needle Roller Bearings | 41.275 | 12.7 | — |
| BHAM 2012 | IKO | Needle Roller Bearings | 41.275 | 19.05 | — |
| BHAM 2016 | IKO | Needle Roller Bearings | 41.275 | 25.4 | — |
| BHAM 2020 | IKO | Needle Roller Bearings | 41.275 | 31.75 | — |
| BHAM 208 | IKO | Needle Roller Bearings | 41.275 | 12.7 | — |
| JH-2012 | NSK | Needle Roller Bearings | 41.275 | 19.05 | — |
| JH-2016 | NSK | Needle Roller Bearings | 41.275 | 25.4 | — |
| JH-2020 | NSK | Needle Roller Bearings | 41.275 | 31.75 | — |
| MJH-20161 | NSK | Needle Roller Bearings | 41.275 | 25.4 | — |
| WJ-202612 | NSK | Needle Roller Bearings | 41.275 | 19.05 | — |
| WJ-202616 | NSK | Needle Roller Bearings | 41.275 | 25.4 | — |
| WJ-202620 | NSK | Needle Roller Bearings | 41.275 | 31.75 | — |
| WJ-202624 | NSK | Needle Roller Bearings | 41.275 | 38.1 | — |
| BR 202816 | IKO | Needle Roller Bearings | 44.45 | 25.4 | — |
| BR 202820 | IKO | Needle Roller Bearings | 44.45 | 31.75 | — |
| BR 202820 U | IKO | Needle Roller Bearings | 44.45 | 31.75 | — |
| BR 202820 UU | IKO | Needle Roller Bearings | 44.45 | 31.8 | — |
| GBR 202816 | IKO | Needle Roller Bearings | 44.45 | 25.4 | — |
| GBR 202820 U | IKO | Needle Roller Bearings | 44.45 | 31.75 | — |
| GBR 202820 UU | IKO | Needle Roller Bearings | 44.45 | 31.8 | — |
| HJ-202816 | NSK | Needle Roller Bearings | 44.45 | 25.4 | — |
| HJ-202816 + IR-162016 | NSK | Needle Roller Bearings | 44.45 | 25.4 | — |
| HJ-202820 | NSK | Needle Roller Bearings | 44.45 | 31.75 | — |
| HJ-202820 + IR-162020 | NSK | Needle Roller Bearings | 44.45 | 31.75 | — |
| NTA-2031 | NSK | Needle Roller Bearings | 49.2 | 1.984 | Cross-ref → |
| 12SF20 | NSK | Needle Roller Bearings | 50.8 | 27.76 | — |
| KBZ20 | INA | Needle Roller Bearings | 50.8 | 66.675 | — |
| KX20 | INA | Needle Roller Bearings | 50.8 | 66.675 | — |
| KXO20 | INA | Needle Roller Bearings | 50.8 | 66.675 | — |
| SRF45 | ANDGE | Needle Roller Bearings | 51.15 | 25.773 | — |
| BRI 203316 | IKO | Needle Roller Bearings | 52.388 | 25.65 | — |
| BRI 203320 | IKO | Needle Roller Bearings | 52.388 | 32 | — |
| BRI 203320 U | IKO | Needle Roller Bearings | 52.388 | 32 | — |
| BRI 203320 UU | IKO | Needle Roller Bearings | 52.388 | 32 | — |
| GBRI 203316 | IKO | Needle Roller Bearings | 52.388 | 25.65 | — |
| GBRI 203320 | IKO | Needle Roller Bearings | 52.388 | 32 | — |
| GBRI 203320 U | IKO | Needle Roller Bearings | 52.388 | 32 | — |
| GBRI 203320 UU | IKO | Needle Roller Bearings | 52.388 | 32 | — |
| CR-48 | NSK | Needle Roller Bearings | 76.2 | 44.45 | — |
| CRB-48 | NSK | Needle Roller Bearings | 76.2 | 44.45 | — |
| CRBE-48 | NSK | Needle Roller Bearings | 76.2 | 44.45 | — |
| CRE-48 | NSK | Needle Roller Bearings | 76.2 | 44.45 | — |
| CRS-48 | NSK | Needle Roller Bearings | 76.2 | 44.45 | — |
| CRSB-48 | NSK | Needle Roller Bearings | 76.2 | 44.45 | — |
| CRSBE-48 | NSK | Needle Roller Bearings | 76.2 | 44.45 | — |
| CRSE-48 | NSK | Needle Roller Bearings | 76.2 | 44.45 | — |
| CR-52 | NSK | Needle Roller Bearings | 82.55 | 44.45 | — |
| CRB-52 | NSK | Needle Roller Bearings | 82.55 | 44.45 | — |
| CRBE-52 | NSK | Needle Roller Bearings | 82.55 | 44.45 | — |
| CRE-52 | NSK | Needle Roller Bearings | 82.55 | 44.45 | — |
| CRS-52 | NSK | Needle Roller Bearings | 82.55 | 44.45 | — |
| CRSB-52 | NSK | Needle Roller Bearings | 82.55 | 44.45 | — |
| CRSBE-52 | NSK | Needle Roller Bearings | 82.55 | 44.45 | — |
| CRSE-52 | NSK | Needle Roller Bearings | 82.55 | 44.45 | — |
| YCR-64 | NSK | Needle Roller Bearings | 101.6 | 58.74 | — |
| YCRS-64 | NSK | Needle Roller Bearings | 101.6 | 58.74 | — |
| NA214-44 | ANDGE | Needle Roller Bearings | 125 | 30 | — |
| NA314-44 | ANDGE | Needle Roller Bearings | 150 | 68.3 | — |
The bore is the shaft diameter, so it is the one dimension you cannot change: pick the bore first, then decide the type from the load and speed, then the outer diameter from the housing you have. If the housing is fixed, filter by outer diameter in the product center. For fits and shaft tolerances see the fit recommendations.