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| NTN UEL 308 Bearing Details： |
| Bearing Name | UEL 308 |
| New Model | UEL308 |
| Old Model | 39608 bearing |
| product Model | UEL308 |
| Category | Plummer Block Bearings |
| Brand | NTN Bearing |
| Inner Diameter d ( mm ) | 40 |
| Outer Diameter D ( mm ) | 90 |
| Thickness B ( mm ) | 57.1 |
|
| NTN UEL 308 Bearing Bearing Size and Drawing： |
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NTN UEL 308 Bearing With size alternative model
| Model | Inner Diameter
d(mm) | Outer Diameter
D(mm) | thickness
B(mm) | Brand | Type |
| NSK UEL 308 Bearing | 40 | 90 | 57.1 | NSK | Plummer Block Bearings |
| NTN UEL 308 Bearing | 40 | 90 | 57.1 | NTN | Plummer Block Bearings |
| FYH UEL308 Bearing | 40 | 90 | 57.1 | FYH | Plummer Block Bearings |
| NSK UEL308 Bearing | 40 | 90 | 57.1 | NSK | Plummer Block Bearings |
| NTN UEL308 Bearing | 40 | 90 | 57.1 | NTN | Plummer Block Bearings |
| FYH UEL 308 Bearing | 40 | 90 | 57.1 | FYH | Plummer Block Bearings |
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What are the structural components and design advantages of insert bearings?
Insert bearings (embedded bearings) are primarily composed of a wide inner ring deep groove ball bearing or a self-aligning ball bearing. The outer ring is spherical, and the inner ring is elongated and equipped with a locking device (set screw, eccentric sleeve, or adapter sleeve). They feature internal double-sided seals and pre-filled grease, offering advantages such as convenient installation, automatic self-alignment to compensate for centering errors, self-lubrication, and a compact structure.
What are the advantages of insert bearings compared to other similar bearings?
Compared to standard deep groove ball bearings, insert bearings have an automatic self-aligning function, adapting to uneven mounting bases, and the inner ring locking device makes the fit with the shaft simpler and more reliable. Compared to the structure of split bearings with independent housings, they offer higher integration, significantly reduced installation time, and eliminate the need for additional seals and lubrication. Compared to mounted bearing units, insert bearings are the core component, providing a more compact solution for direct embedding into equipment housings.
What are the applicable occasions and typical applications of insert bearings?
These bearings are suitable for medium to light-load machinery applications requiring quick installation, some centering deviation, and convenient maintenance. Typical applications include agricultural machinery (seeders, harvesters), conveyor rollers, food processing machinery, packaging equipment, textile machinery, fans, and material handling equipment.
