NJ310 50x110x27 Bearing
Single Row Cylindrical Roller Bearing
The NJ310 Single Row Cylindrical Roller Bearing is designed for industrial applications requiring high load capacity and precision. With dimensions of 50x110x27 mm, it handles heavy radial loads and moderate axial loads in one direction. This bearing ensures smooth operation with low friction, reducing wear and extending machinery lifespan. Its high-quality construction makes it durable and reliable, even in demanding environments. The separable inner ring allows for easy installation and maintenance, making the NJ310 an ideal choice for gearboxes, motors, and pumps.
Performance Overview of the NJ310 Bearings
| Specifications | Details |
|---|---|
| Brand | AMIGO NJ310 | Interchangeable With: SKF NJ310 |
| Bore diameter | 50 mm |
| Outside diameter | 110 mm |
| Width | 27 mm |
| Basic dynamic load rating | 127 kN |
| Basic static load rating | 112 kN |
| Reference speed | 6,700 r/min |
| Limiting speed | 8,000 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 | 1.17 kg |
| Specifications | Details |
|---|---|
| Brand | AMIGO NJ310 | Interchangeable With: SKF NJ310 |
| Bore diameter | 1.969 in |
| Outside diameter | 4.331 in |
| Width | 1.063 in |
| Basic dynamic load rating | 28,551 lbf |
| Basic static load rating | 25,179 lbf |
| Reference speed | 6,700 r/min |
| Limiting speed | 8,000 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 | 2.582 lb |
Specifications Overview of the NJ310 Bearings
| Specifications | Details |
|---|---|
| Bore diameter | 50 mm |
| Outside diameter | 110 mm |
| Width | 27 mm |
| Shoulder diameter of inner ring | ≈ 71.2 mm |
| Shoulder diameter of outer ring | ≈ 91.4 mm |
| Raceway diameter of inner ring | 65 mm |
| Chamfer dimension r1,2 | min. 2 mm |
| Chamfer dimension r3,4 | min. 2 mm |
| Permissible axial displacement | max. 1.9 mm |
| Diameter of spacer sleeve (min) | min. 60 mm |
| Diameter of spacer sleeve (max) | max. 63 mm |
| Diameter of shaft abutment | min. 73 mm |
| Diameter of housing abutment | max. 99.6 mm |
| Radius of fillet | max. 2 mm |
| Specifications | Details |
|---|---|
| Bore diameter | 1.969 in |
| Outside diameter | 4.331 in |
| Width | 1.063 in |
| Shoulder diameter of inner ring | ≈ 2.803 in |
| Shoulder diameter of outer ring | ≈ 3.598 in |
| Raceway diameter of inner ring | 2.559 in |
| Chamfer dimension r1,2 | min. 0.079 in |
| Chamfer dimension r3,4 | min. 0.079 in |
| Permissible axial displacement | max. 0.075 in |
| Diameter of spacer sleeve (min) | min. 2.362 in |
| Diameter of spacer sleeve (max) | max. 2.48 in |
| Diameter of shaft abutment | min. 2.874 in |
| Diameter of housing abutment | max. 3.921 in |
| Radius of fillet | max. 0.079 in |
Applicable Machines and Industries
The NJ310 Single Row Cylindrical Roller Bearing is commonly used in various types of machinery due to its ability to handle high radial loads and moderate axial loads in one direction. Below are examples of machines where the NJ310 bearing is typically applied, the role it plays, and common brands associated with these machines:
1. Gearboxes
- Role: Supports the gear shafts, ensuring smooth rotation and proper alignment under heavy loads.
- Common Brands: Siemens, SEW-Eurodrive, Bonfiglioli
2. Electric Motors
- Role: Ensures stable and smooth rotation of the rotor shaft, reducing friction and wear, thereby increasing motor efficiency and lifespan.
- Common Brands: ABB, Siemens, WEG
3. Pumps
- Role: Supports the rotating shafts in pumps, allowing for efficient fluid movement while minimizing friction and mechanical wear.
- Common Brands: Grundfos, KSB, Sulzer
4. Conveyors
- Role: Facilitates the smooth operation of rollers and other moving parts, ensuring that the conveyor can handle heavy loads and operate efficiently.
- Common Brands: FlexLink, Dematic, Rexnord
5. Compressors
- Role: Provides support for the rotating components in compressors, reducing vibration and ensuring efficient, reliable operation.
- Common Brands: Ingersoll Rand, Atlas Copco, Kaeser
These examples demonstrate the versatility and critical role of the NJ310 bearing in ensuring smooth, efficient, and reliable operation in various types of industrial machinery.
NJ310 Bearing Cross Reference and Interchange
| Brand | Bearing Model |
|---|---|
| Amigo | NJ310 |
| SKF | NJ310 ECP |
| FNTN | NJ310 |
| MRC | MR309G |
This table and content provide a clear guide for users looking to cross-reference or interchange their NJ310 bearings with equivalent models from other brands, ensuring they can maintain optimal performance and reliability in their machinery.
Choosing the Right Bearing
When comparing the Amigo NJ310 bearing to other similar models, several key advantages make it the superior choice for various applications:
When to Choose the Amigo NJ310 Bearing
Superior Operating Speed: The Amigo NJ310 bearing supports an operating speed of up to 8,000 r/min, making it ideal for applications that require higher speeds compared to other models like the SKF NJ310 ECP and FNTN NJ310. This feature is particularly beneficial in high-speed machinery where consistent performance is crucial.
Durable Non-Metallic Cage: Unlike other models that use steel cages, the Amigo NJ310 features a non-metallic cage. This reduces friction, minimizes noise, and extends the bearing’s lifespan, making it a better choice for applications where long-term reliability and quiet operation are priorities.
Competitive Pricing: Despite offering similar or superior features to its competitors, the Amigo NJ310 is priced more competitively, providing significant cost savings without compromising on quality. This makes it an excellent option for budget-conscious buyers.
Optimal for Heavy Loads: The Amigo NJ310 excels in supporting heavy radial loads, similar to its counterparts, but its unique combination of features gives it an edge in demanding industrial environments.
The Amigo NJ310 bearing is an excellent choice for users who need reliable, high-performance bearings at a competitive price. Its higher operating speed and non-metallic cage make it stand out among other similar models. Whether you are looking to upgrade existing equipment or require a dependable bearing for new machinery, the Amigo NJ310 offers a robust solution that balances performance, durability, and cost-efficiency.
| Feature | Amigo NJ310 | SKF NJ310 ECP | FNTN NJ310 | MRC MR309G |
|---|---|---|---|---|
| Radial Load Capacity | High | High | High | High |
| Axial Load Capacity | Moderate (One Direction) | Moderate (One Direction) | Moderate (One Direction) | Moderate (One Direction) |
| Operating Speed | Up to 8,000 r/min | Up to 7,500 r/min | Up to 7,500 r/min | Up to 7,000 r/min |
| Cage Material | Non-metallic | Steel | Steel | Steel |
| Precision | High (ISO Class CN) | High (ISO Class CN) | High (ISO Class CN) | High (ISO Class CN) |
| Price | Competitive | Higher | Moderate | Moderate |
| Availability | Widely Available | Widely Available | Widely Available | Available in Limited Quantities |
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Why Amigo NJ310 Bearings Are the Top Choice
We recently replaced our old bearings with the Amigo NJ310 in our gearboxes, and the improvement was immediately noticeable. The bearing performs just as well as the SKF NJ310 ECP we've used before, with smooth operation and no issues even under heavy loads. The installation was straightforward, and we’ve been very pleased with the consistent performance.
James Anderson
After installing the Amigo NJ310 Bearing in our electric motors, we found it to be on par with the FNTN bearings we’ve used in the past. The Amigo bearing handles high speeds with ease, and the non-metallic cage has significantly reduced noise and friction. It feels like a premium bearing, and the cost savings make it an even better choice.
Emily Thompson
We've been using the Amigo NJ310 Bearing in our industrial pumps, and it has held up impressively well. The performance is comparable to the MRC bearings we've previously relied on, with the added benefit of better speed tolerance. The durability of the Amigo NJ310 has been excellent, and we’ve experienced no downtime since the switch.
Sarah Bennett
Switching to the Amigo NJ310 Bearing was a great decision for our machinery. It operates just as efficiently as the SKF NJ310 ECP, with the same load capacity and smoothness. The slightly higher speed rating has been beneficial for our high-speed applications, and we’ve found it to be a cost-effective and reliable alternative.
Michael Carter
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