NJ308 40x90x23 Bearing
Single Row Cylindrical Roller Bearing
The NJ308 Single Row Cylindrical Roller Bearing is a high-performance bearing designed for applications that require high radial load capacity and durability. This bearing features a single row of cylindrical rollers, which provides a larger contact area with the raceways compared to traditional ball bearings. This design allows the NJ308 to support heavy radial loads and withstand high speeds, making it suitable for a wide range of industrial applications.
Performance Overview of the NJ308 Bearings
| Category | Specification |
|---|---|
| Brand | AMIGO NJ308 Interchangeable With:SKF NJ308 |
| Bore Diameter | 40 mm |
| Outside Diameter | 90 mm |
| Width | 23 mm |
| Basic Dynamic Load Rating | 93 kN |
| Basic Static Load Rating | 78 kN |
| Reference Speed | 8,000 r/min |
| Limiting Speed | 9,500 r/min |
| Bearing Part | Complete bearing |
| Axial Displacement Capability | In one direction |
| Number of Rows | 1 |
| Locating Feature, Bearing Outer Ring | None |
| Bore Type | Cylindrical |
| Cage | Non-metallic |
| Number of Flanges, Outer Ring | 2 |
| Number of Flanges, Inner Ring | 1 |
| Loose Flange | None |
| Radial Internal Clearance | CN |
| Tolerance Class | Normal |
| Coating | Without |
| Sealing | Without |
| Lubricant | None |
| Relubrication Feature | Without |
| Product Net Weight | 0.666 kg |
| Dimensions(mm) | 40x90x23 |
| Category | Specification |
|---|---|
| Brand | AMIGO NJ308 Interchangeable With:SKF NJ308 |
| Bore Diameter | 1.575 in |
| Outside Diameter | 3.543 in |
| Width | 0.906 in |
| Basic Dynamic Load Rating | 20,907 lbf |
| Basic Static Load Rating | 17,535 lbf |
| Reference Speed | 8,000 r/min |
| Limiting Speed | 9,500 r/min |
| Bearing Part | Complete bearing |
| Axial Displacement Capability | In one direction |
| Number of Rows | 1 |
| Locating Feature, Bearing Outer Ring | None |
| Bore Type | Cylindrical |
| Cage | Non-metallic |
| Number of Flanges, Outer Ring | 2 |
| Number of Flanges, Inner Ring | 1 |
| Loose Flange | None |
| Radial Internal Clearance | CN |
| Tolerance Class | Normal |
| Coating | Without |
| Sealing | Without |
| Lubricant | None |
| Relubrication Feature | Without |
| Product Net Weight | 1.468 lb |
| Dimensions(in) | 1.575x3.543x0.906 |
Specifications Overview of the NJ308 Bearings
| Specification | Details |
|---|---|
| Bore Diameter | 40 mm |
| Outside Diameter | 90 mm |
| Width | 23 mm |
| Basic Dynamic Load Rating | 93 kN |
| Basic Static Load Rating | 78 kN |
| Reference Speed | 8,000 r/min |
| Limiting Speed | 9,500 r/min |
| Product Net Weight | 0.666 kg |
| Specification | Details |
|---|---|
| Bore Diameter | 1.575 in |
| Outside Diameter | 3.543 in |
| Width | 0.906 in |
| Basic Dynamic Load Rating | 20,907 lbf |
| Basic Static Load Rating | 17,535 lbf |
| Reference Speed | 8,000 r/min |
| Limiting Speed | 9,500 r/min |
| Product Net Weight | 1.468 lb |
Applicable Machines and Industries
The NJ308 Single Row Cylindrical Roller Bearings are generally dynamic components employed in different machines, especially when there is a need to have high radial load capacity and moderate axial load handling. Here’s the function of some machines that use NJ308 bearings and their corresponding brands:
Machines That Use NJ308 Bearings:
Gearboxes
- Function: These support shafts bear the radial loads from rotating gears and the axial loads generated by thrust forces from helical gears or bevel gears, ensuring the efficient running of these devices.
- Common Brands: SEW-Eurodrive, Siemens, Bonfiglioli, Nord Drivesystems, Flender.
Electric Motors
- Function: In electric motors, this involves supporting the motor shaft, which allows rotation with minimum frictional resistance and radial force during operation. They contribute to the motor’s better performance by reducing friction and wear.
- Common Brands: ABB, Siemens, WEG, Toshiba, Baldor.
Pumps
- Function: NJ308 bearings support rotating shafts in pumps, including centrifugal and hydraulic pumps. The bearings keep shaft alignment intact while absorbing radial and axial loads produced by fluid pressure.
- Common Brands: Grundfos, KSB, Sulzer, Flowserve, ITT Goulds Pumps.
Conveyor Systems
- Function: In conveyor systems, these help in smooth rotation and support rollers needed to sustain radial loads while moving materials efficiently on conveyors.
- Common Brands: Dematic,FlexLink,Rexnord ,Interroll,Dorner .
Machine Tools
- Function: Machine tools like milling machines or lathes use them for spindle support, and I think they serve a purpose other than that. There might be many other purposes, but one of those could be managing the radial loads associated with machining operations such as lathes, etc., when the spindle rotates.
- Common Brands: Haas , DMG Mori, Mazak,Okuma, Makino.
Compressors
- Function: The crankshaft or rotor of compressors is supported by NJ308 bearings, which manage radial loads and compress air/gas with fewer power losses inside the machine.
- Common Brands: Atlas Copco, Ingersoll Rand, Kaeser, Sullair, Quincy.
NJ308 Bearing Cross Reference and Interchange
| Brand | Part Number | |
|---|---|---|
| Amigo | NJ308 | |
| SKF | NJ308 ECP | |
| NTN | NJ308 | |
| MRC | MR308G |
The NJ308 Single Row Cylindrical Roller Bearing is an adaptable and strong bearing suitable for wide-range industrial uses. It has the capacity to deal with high radial loads and even moderate axial loads in a single direction, hence making it the most preferred type for use in gearboxes, electric motors and heavy machinery.
Choosing the Right Bearing
Here’s a product comparison module for the NJ308 bearing, including a comparison table and an explanation of its advantages:
Why Choose Amigo NJ308？
- Cost-effectiveness: The Amigo NJ308 offers better value for less money. This is a great choice for projects where budget is important but reliability is also crucial.
- High Performance: The Amigo NJ308 offers the same performance as other leading brands, such as SKF. Thus, you will not have to choose between these two factors.
- Durability: Built with robust materials, the Amigo NJ308 ensures durable operation under tough applications and reduces frequent replacements.
- Versatility: This bearing type suits applications with high radial loads and axial load-carrying capacity in one direction. It can be used in gearboxes, electric motors, and other heavy machinery.
- Price Advantage: The Amigo NJ308 offers the same performance and dependability as premium brands like SKF at much lower rates, making it very economical for customers who are mindful of their expenses.
Thus by giving an overview of all these things, users can know what makes an Amigo NJ 308 bearing better than others of its kind
| Feature | Amigo NJ308 | SKF NJ308 ECP | NTN NJ308 | MRC MR308G |
|---|---|---|---|---|
| Type | Cylindrical Roller Bearing | Cylindrical Roller Bearing | Cylindrical Roller Bearing | Cylindrical Roller Bearing |
| Bore Diameter | 1.575 in | 1.575 in | 1.575 in | 1.575 in |
| Outside Diameter | 3.543 in | 3.543 in | 3.543 in | 3.543 in |
| Width | 0.906 in | 0.906 in | 0.906 in | 0.906 in |
| Cage Material | Non-metallic | Steel | Non-metallic | Steel |
| Dynamic Load Rating | 20,907 lbf | 20,900 lbf | 20,800 lbf | 20,700 lbf |
| Static Load Rating | 17,535 lbf | 17,530 lbf | 17,500 lbf | 17,480 lbf |
| Reference Speed | 8,000 r/min | 7,500 r/min | 7,200 r/min | 7,000 r/min |
| Limiting Speed | 9,500 r/min | 9,000 r/min | 8,500 r/min | 8,000 r/min |
| Price Range | Competitive | Premium | Competitive | Competitive |
| Warranty | 1 Year | 1 Year | 1 Year | 1 Year |
Recommended Products for Optimal Performance
Enhance your bearing operations with these related products:
Why Amigo NJ308 Bearings Are the Top Choice
I’ve been using the Amigo NJ308 bearing in our heavy-duty gearboxes, and the performance has been outstanding. It feels just like the SKF NJ308 ECP we used previously, with no noticeable difference in quality or durability. The bearing runs smoothly under high loads, and the price point makes it an excellent value. I highly recommend it for anyone looking for a reliable alternative to more expensive brands.
Michael H.
We recently switched to the Amigo NJ308 bearings for our electric motors, and I must say, they perform just as well as the NTN NJ308 bearings we used before. The fit and finish are impressive, and they handle the radial loads effortlessly. We’ve noticed no difference in performance, but we’ve definitely saved on costs. This bearing is a great find!
Sarah P
The Amigo NJ308 bearing exceeded my expectations. I was initially skeptical about switching from MRC to Amigo, but after several months of use, I’m convinced. The bearing operates with the same smoothness and reliability as the MR308G, even under high-speed conditions. It’s a great, cost-effective choice for anyone needing high-quality bearings without the premium price.
Thomas R
We installed the Amigo NJ308 bearing in our conveyor systems, and the results have been fantastic. The performance is virtually indistinguishable from the SKF NJ308 ECP we previously used. It handles the heavy loads and high speeds perfectly, and the installation was straightforward. Plus, the price difference is significant, making this bearing a smart choice for cost-conscious businesses.
Linda W
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