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| NACHI 31309 Bearing Details： |
| Bearing Name | 31309 |
| New Model | 31309 |
| Old Model | 27309E bearing |
| product Model | 31309 |
| Category | Tapered Roller Bearings |
| Brand | NACHI Bearing |
| Inner Diameter d ( mm ) | 45 |
| Outer Diameter D ( mm ) | 100 |
| Thickness B ( mm ) | 25 |
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| NACHI 31309 Bearing Bearing Size and Drawing： |
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NACHI 31309 Bearing With size alternative model
| Model | Inner Diameter
d(mm) | Outer Diameter
D(mm) | thickness
B(mm) | Brand | Type |
| MRC 6309 Bearing | 45 | 100 | 25 | MRC | Deep Groove Ball Bearings |
| TBS QJ309 MA Bearing | 45 | 100 | 25 | TBS | Angular Contact Ball Bearings |
| TBS NUP 309 E Bearing | 45 | 100 | 25 | TBS | Cylindrical Roller Bearings |
| TBS 7309BECBPH* Bearing | 45 | 100 | 25 | TBS | Angular Contact Ball Bearings |
| NTN 6309-Z Bearing | 45 | 100 | 25 | NTN | Deep Groove Ball Bearings |
| RIV NJ 309 Bearing | 45 | 100 | 25 | RIV | Cylindrical Roller Bearings |
| TBS NJ 309 E CJ* Bearing | 45 | 100 | 25 | TBS | Cylindrical Roller Bearings |
| TBS 7309BECBJ Bearing | 45 | 100 | 25 | TBS | Angular Contact Ball Bearings |
| TBS *6309-2Z Bearing | 45 | 100 | 25 | TBS | Deep Groove Ball Bearings |
| KOYO 6309-2RS Bearing | 45 | 100 | 25 | KOYO | Deep Groove Ball Bearings |
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What are the structural components and design advantages of tapered roller bearings?
Tapered roller bearings consist of an inner ring, an outer ring, tapered rollers, and a cage. The rollers and raceways have a tapered design, with the extensions of all the tapered surfaces converging on the bearing axis. They offer advantages such as the ability to simultaneously withstand radial and unidirectional axial loads, high load capacity, good rigidity, adjustable clearance, and are typically used in pairs.
What are the advantages of tapered roller bearings compared to other similar bearings?
Compared to cylindrical roller bearings, tapered roller bearings can withstand larger axial loads and have a higher load capacity. Compared to angular contact ball bearings, their radial and axial load capacities are significantly higher, making them more suitable for heavy-duty impact conditions. Compared to thrust bearings, they can simultaneously withstand combined radial and axial loads, have a more compact structure, and do not require additional radial bearings.
What are the applicable occasions and typical applications of tapered roller bearings?
These bearings are suitable for heavy-duty, impact-prone mechanical applications requiring precise positioning and adjustable clearance. Typical applications include automotive wheel hubs, gearboxes, rolling mill roll necks, machine tool spindles, engineering machinery drive axles, railway vehicle axles, and mining crushing equipment.
